./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P --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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:16:44,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:16:44,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:16:44,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:16:44,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:16:44,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:16:44,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:16:44,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:16:44,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:16:44,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:16:44,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:16:44,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:16:44,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:16:44,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:16:44,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:16:44,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:16:44,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:16:44,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:16:44,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:16:44,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:16:44,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:16:44,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:16:44,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:16:44,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:16:44,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:16:44,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:16:44,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:16:44,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:16:44,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:16:44,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:16:44,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:16:44,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:16:44,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:16:44,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:16:44,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:16:44,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:16:44,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:16:44,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:16:44,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:16:44,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:16:44,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:16:44,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:16:44,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:16:44,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:16:44,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:16:44,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:16:44,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:16:44,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:16:44,534 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:16:44,534 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:16:44,535 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:16:44,535 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:16:44,535 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:16:44,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:16:44,535 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:16:44,536 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:16:44,536 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:16:44,536 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:16:44,536 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:16:44,536 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:16:44,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:16:44,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:16:44,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:16:44,538 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:16:44,538 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:16:44,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:16:44,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:16:44,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:16:44,539 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:16:44,539 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:16:44,539 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:16:44,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:16:44,540 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:16:44,540 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:16:44,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:16:44,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:16:44,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:16:44,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:16:44,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:16:44,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:16:44,541 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:16:44,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:16:44,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:16:44,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:16:44,542 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_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2021-11-21 01:16:44,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:16:44,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:16:44,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:16:44,821 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:16:44,822 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:16:44,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-11-21 01:16:44,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data/796813090/dd2f47ae6fb94023b4fa351b5fe1e58d/FLAGd9d16d337 [2021-11-21 01:16:45,442 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:16:45,446 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-11-21 01:16:45,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data/796813090/dd2f47ae6fb94023b4fa351b5fe1e58d/FLAGd9d16d337 [2021-11-21 01:16:45,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data/796813090/dd2f47ae6fb94023b4fa351b5fe1e58d [2021-11-21 01:16:45,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:16:45,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:16:45,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:16:45,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:16:45,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:16:45,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:16:45" (1/1) ... [2021-11-21 01:16:45,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312dddf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:45, skipping insertion in model container [2021-11-21 01:16:45,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:16:45" (1/1) ... [2021-11-21 01:16:45,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:16:45,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:16:46,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:16:46,121 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) [2021-11-21 01:16:46,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19c42f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:46, skipping insertion in model container [2021-11-21 01:16:46,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:16:46,122 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:16:46,124 INFO L158 Benchmark]: Toolchain (without parser) took 429.99ms. Allocated memory is still 88.1MB. Free memory was 62.4MB in the beginning and 61.0MB in the end (delta: 1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:16:46,125 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 61.4MB in the beginning and 61.4MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:16:46,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.50ms. Allocated memory is still 88.1MB. Free memory was 62.2MB in the beginning and 61.0MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:16:46,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 61.4MB in the beginning and 61.4MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.50ms. Allocated memory is still 88.1MB. Free memory was 62.2MB in the beginning and 61.0MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P --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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:16:48,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:16:48,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:16:48,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:16:48,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:16:48,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:16:48,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:16:48,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:16:48,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:16:48,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:16:48,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:16:48,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:16:48,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:16:48,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:16:48,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:16:48,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:16:48,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:16:48,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:16:48,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:16:48,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:16:48,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:16:48,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:16:48,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:16:48,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:16:48,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:16:48,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:16:48,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:16:48,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:16:48,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:16:48,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:16:48,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:16:48,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:16:48,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:16:48,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:16:48,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:16:48,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:16:48,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:16:48,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:16:48,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:16:48,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:16:48,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:16:48,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:16:48,466 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:16:48,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:16:48,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:16:48,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:16:48,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:16:48,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:16:48,471 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:16:48,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:16:48,471 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:16:48,472 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:16:48,473 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:16:48,473 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:16:48,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:16:48,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:16:48,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:16:48,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:16:48,475 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:16:48,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:16:48,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:16:48,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:16:48,476 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:16:48,476 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:16:48,477 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:16:48,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:16:48,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:16:48,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:16:48,478 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:16:48,478 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:16:48,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:16:48,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:16:48,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:16:48,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:16:48,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:16:48,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:16:48,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:16:48,480 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:16:48,480 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:16:48,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:16:48,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:16:48,481 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_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2021-11-21 01:16:48,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:16:48,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:16:48,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:16:48,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:16:48,879 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:16:48,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-11-21 01:16:48,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data/c795c1504/cf924f54b400476f88c99a574fe88756/FLAG2222203a9 [2021-11-21 01:16:49,617 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:16:49,618 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-11-21 01:16:49,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data/c795c1504/cf924f54b400476f88c99a574fe88756/FLAG2222203a9 [2021-11-21 01:16:49,851 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/data/c795c1504/cf924f54b400476f88c99a574fe88756 [2021-11-21 01:16:49,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:16:49,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:16:49,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:16:49,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:16:49,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:16:49,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:16:49" (1/1) ... [2021-11-21 01:16:49,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6710625a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:49, skipping insertion in model container [2021-11-21 01:16:49,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:16:49" (1/1) ... [2021-11-21 01:16:49,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:16:49,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:16:50,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:16:50,259 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:16:50,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:16:50,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:16:50,342 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:16:50,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:16:50,424 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:16:50,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50 WrapperNode [2021-11-21 01:16:50,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:16:50,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:16:50,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:16:50,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:16:50,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,491 INFO L137 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2021-11-21 01:16:50,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:16:50,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:16:50,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:16:50,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:16:50,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:16:50,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:16:50,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:16:50,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:16:50,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (1/1) ... [2021-11-21 01:16:50,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:16:50,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:16:50,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:16:50,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:16:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:16:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:16:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2021-11-21 01:16:50,664 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2021-11-21 01:16:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:16:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:16:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:16:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:16:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:16:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:16:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:16:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:16:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:16:50,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:16:50,776 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:16:50,778 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:16:51,573 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:16:51,581 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:16:51,581 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:16:51,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:16:51 BoogieIcfgContainer [2021-11-21 01:16:51,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:16:51,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:16:51,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:16:51,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:16:51,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:16:49" (1/3) ... [2021-11-21 01:16:51,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba4447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:16:51, skipping insertion in model container [2021-11-21 01:16:51,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:16:50" (2/3) ... [2021-11-21 01:16:51,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba4447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:16:51, skipping insertion in model container [2021-11-21 01:16:51,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:16:51" (3/3) ... [2021-11-21 01:16:51,592 INFO L111 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-2.i [2021-11-21 01:16:51,597 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:16:51,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2021-11-21 01:16:51,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:16:51,647 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 [2021-11-21 01:16:51,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2021-11-21 01:16:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:16:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:16:51,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:51,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:16:51,671 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:16:51,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:51,695 INFO L85 PathProgramCache]: Analyzing trace with hash 5052905, now seen corresponding path program 1 times [2021-11-21 01:16:51,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:51,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896274376] [2021-11-21 01:16:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:51,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:51,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:51,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:51,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:16:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:51,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:16:51,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:51,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:51,838 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:51,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896274376] [2021-11-21 01:16:51,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896274376] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:51,839 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:51,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:16:51,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343972828] [2021-11-21 01:16:51,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:51,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:16:51,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:51,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:16:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:16:51,880 INFO L87 Difference]: Start difference. First operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:51,924 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2021-11-21 01:16:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:16:51,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-11-21 01:16:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:51,940 INFO L225 Difference]: With dead ends: 189 [2021-11-21 01:16:51,940 INFO L226 Difference]: Without dead ends: 187 [2021-11-21 01:16:51,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:16:51,946 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:51,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:16:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-21 01:16:52,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-21 01:16:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 92 states have (on average 2.108695652173913) internal successors, (194), 183 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:16:52,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2021-11-21 01:16:52,024 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 4 [2021-11-21 01:16:52,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:52,025 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2021-11-21 01:16:52,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2021-11-21 01:16:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:16:52,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:52,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:16:52,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:52,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:52,237 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:16:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:52,238 INFO L85 PathProgramCache]: Analyzing trace with hash 5050693, now seen corresponding path program 1 times [2021-11-21 01:16:52,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:52,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147459679] [2021-11-21 01:16:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:52,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:52,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:52,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:16:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:52,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:16:52,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:52,385 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 [2021-11-21 01:16:52,442 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:16:52,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-21 01:16:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:52,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:52,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:52,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147459679] [2021-11-21 01:16:52,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147459679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:52,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:52,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:16:52,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230122882] [2021-11-21 01:16:52,544 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:52,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:16:52,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:16:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:16:52,550 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:53,176 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2021-11-21 01:16:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:16:53,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-21 01:16:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:53,179 INFO L225 Difference]: With dead ends: 207 [2021-11-21 01:16:53,179 INFO L226 Difference]: Without dead ends: 207 [2021-11-21 01:16:53,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:53,181 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 149 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:53,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 287 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:16:53,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-21 01:16:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2021-11-21 01:16:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 177 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:16:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2021-11-21 01:16:53,208 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 4 [2021-11-21 01:16:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:53,209 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2021-11-21 01:16:53,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2021-11-21 01:16:53,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:16:53,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:53,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:16:53,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:53,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:53,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:16:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:53,422 INFO L85 PathProgramCache]: Analyzing trace with hash 5050694, now seen corresponding path program 1 times [2021-11-21 01:16:53,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:53,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070241102] [2021-11-21 01:16:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:53,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:53,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:53,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:53,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:16:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:53,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:16:53,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:53,512 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 [2021-11-21 01:16:53,517 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 [2021-11-21 01:16:53,575 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:16:53,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:16:53,583 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:16:53,584 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 25 treesize of output 21 [2021-11-21 01:16:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:53,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:53,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:53,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070241102] [2021-11-21 01:16:53,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070241102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:53,904 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:53,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:16:53,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543935476] [2021-11-21 01:16:53,904 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:53,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:16:53,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:16:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:53,906 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2021-11-21 01:16:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:54,551 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2021-11-21 01:16:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:16:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 4 [2021-11-21 01:16:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:54,555 INFO L225 Difference]: With dead ends: 183 [2021-11-21 01:16:54,555 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 01:16:54,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:16:54,556 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 76 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:54,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 320 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 164 Unchecked, 0.6s Time] [2021-11-21 01:16:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 01:16:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-21 01:16:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 94 states have (on average 2.021276595744681) internal successors, (190), 179 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:16:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2021-11-21 01:16:54,570 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 4 [2021-11-21 01:16:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:54,570 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2021-11-21 01:16:54,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2021-11-21 01:16:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2021-11-21 01:16:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:16:54,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:54,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:16:54,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-21 01:16:54,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:54,781 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:16:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 156571597, now seen corresponding path program 1 times [2021-11-21 01:16:54,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:54,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108339522] [2021-11-21 01:16:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:54,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:54,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:54,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:54,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:16:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:54,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:16:54,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:54,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:16:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:54,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:54,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108339522] [2021-11-21 01:16:54,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108339522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:54,924 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:54,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:16:54,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31640805] [2021-11-21 01:16:54,924 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:54,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:16:54,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:16:54,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:54,926 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:55,254 INFO L93 Difference]: Finished difference Result 206 states and 218 transitions. [2021-11-21 01:16:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:16:55,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 01:16:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:55,256 INFO L225 Difference]: With dead ends: 206 [2021-11-21 01:16:55,256 INFO L226 Difference]: Without dead ends: 206 [2021-11-21 01:16:55,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:16:55,257 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:55,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 232 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:16:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-21 01:16:55,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 181. [2021-11-21 01:16:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 94 states have (on average 2.0) internal successors, (188), 177 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:16:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2021-11-21 01:16:55,270 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 5 [2021-11-21 01:16:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:55,270 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2021-11-21 01:16:55,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:16:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2021-11-21 01:16:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:16:55,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:55,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:16:55,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:55,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:55,482 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:16:55,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash 156571598, now seen corresponding path program 1 times [2021-11-21 01:16:55,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:55,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919437870] [2021-11-21 01:16:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:55,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:55,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:55,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:55,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:16:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:55,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:16:55,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:55,560 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 [2021-11-21 01:16:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:55,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:55,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:55,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919437870] [2021-11-21 01:16:55,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919437870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:55,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:55,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:16:55,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100289740] [2021-11-21 01:16:55,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:55,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:16:55,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:55,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:16:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:16:55,649 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-21 01:16:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:56,369 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2021-11-21 01:16:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:16:56,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 5 [2021-11-21 01:16:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:56,371 INFO L225 Difference]: With dead ends: 179 [2021-11-21 01:16:56,371 INFO L226 Difference]: Without dead ends: 179 [2021-11-21 01:16:56,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:16:56,372 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 11 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:56,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 366 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:16:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-21 01:16:56,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-21 01:16:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 94 states have (on average 1.9787234042553192) internal successors, (186), 175 states have internal predecessors, (186), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:16:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2021-11-21 01:16:56,383 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 5 [2021-11-21 01:16:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:56,383 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2021-11-21 01:16:56,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-21 01:16:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2021-11-21 01:16:56,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:16:56,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:56,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:56,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:56,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:56,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:16:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:56,599 INFO L85 PathProgramCache]: Analyzing trace with hash 141453103, now seen corresponding path program 1 times [2021-11-21 01:16:56,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:56,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514558836] [2021-11-21 01:16:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:56,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:56,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:56,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:16:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:56,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:16:56,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:56,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:56,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 01:16:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:56,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:16:56,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514558836] [2021-11-21 01:16:56,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514558836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:16:56,854 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:16:56,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:16:56,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531005849] [2021-11-21 01:16:56,855 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:16:56,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:16:56,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:16:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:16:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:16:56,856 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 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) [2021-11-21 01:16:57,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:16:57,525 INFO L93 Difference]: Finished difference Result 178 states and 189 transitions. [2021-11-21 01:16:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:16:57,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:16:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:16:57,530 INFO L225 Difference]: With dead ends: 178 [2021-11-21 01:16:57,530 INFO L226 Difference]: Without dead ends: 178 [2021-11-21 01:16:57,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:16:57,531 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 178 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:16:57,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 631 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:16:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-21 01:16:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-21 01:16:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 94 states have (on average 1.9680851063829787) internal successors, (185), 174 states have internal predecessors, (185), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:16:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 189 transitions. [2021-11-21 01:16:57,540 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 189 transitions. Word has length 7 [2021-11-21 01:16:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:16:57,541 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 189 transitions. [2021-11-21 01:16:57,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 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) [2021-11-21 01:16:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 189 transitions. [2021-11-21 01:16:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:16:57,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:16:57,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:16:57,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:16:57,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:16:57,752 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:16:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:16:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash 666573431, now seen corresponding path program 1 times [2021-11-21 01:16:57,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:16:57,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649859180] [2021-11-21 01:16:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:16:57,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:16:57,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:16:57,754 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:16:57,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:16:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:16:57,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 01:16:57,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:16:57,821 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 [2021-11-21 01:16:57,875 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:16:57,875 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 [2021-11-21 01:16:57,971 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:16:57,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-11-21 01:16:57,993 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:16:57,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-21 01:16:58,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-21 01:16:58,042 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 18 treesize of output 10 [2021-11-21 01:16:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:58,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:00,127 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_append_#t~mem25#1.offset| (_ BitVec 32)) (|ULTIMATE.start_append_~node~0#1.offset| (_ BitVec 32))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~node~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~node~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_append_~node~0#1.offset|) |ULTIMATE.start_append_#t~mem25#1.offset|)) |c_ULTIMATE.start_append_~pointerToList#1.base|) |c_ULTIMATE.start_append_~pointerToList#1.offset|))) (forall ((|ULTIMATE.start_append_~node~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_append_#t~mem25#1.base| (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~node~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~node~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_append_~node~0#1.offset|) |ULTIMATE.start_append_#t~mem25#1.base|)) |c_ULTIMATE.start_append_~pointerToList#1.base|) |c_ULTIMATE.start_append_~pointerToList#1.offset|) (_ bv0 32)))) is different from false [2021-11-21 01:17:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:08,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:08,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649859180] [2021-11-21 01:17:08,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649859180] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:08,289 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:08,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-21 01:17:08,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679851508] [2021-11-21 01:17:08,289 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:08,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:17:08,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:17:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:17:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=5, NotChecked=10, Total=56 [2021-11-21 01:17:08,291 INFO L87 Difference]: Start difference. First operand 178 states and 189 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:10,748 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2021-11-21 01:17:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:17:10,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:17:10,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:10,751 INFO L225 Difference]: With dead ends: 183 [2021-11-21 01:17:10,751 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 01:17:10,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=20, Invalid=34, Unknown=6, NotChecked=12, Total=72 [2021-11-21 01:17:10,752 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 3 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:10,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 890 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 149 Unchecked, 0.4s Time] [2021-11-21 01:17:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 01:17:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-11-21 01:17:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 98 states have (on average 1.9285714285714286) internal successors, (189), 178 states have internal predecessors, (189), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:17:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2021-11-21 01:17:10,771 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 10 [2021-11-21 01:17:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:10,771 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2021-11-21 01:17:10,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2021-11-21 01:17:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:17:10,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:10,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:10,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:10,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:17:10,983 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:17:10,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash 623653565, now seen corresponding path program 1 times [2021-11-21 01:17:10,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:17:10,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164792361] [2021-11-21 01:17:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:10,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:17:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:17:10,985 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:17:10,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:17:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:11,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:17:11,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:11,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:11,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:11,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164792361] [2021-11-21 01:17:11,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164792361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:11,131 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:11,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:17:11,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454231774] [2021-11-21 01:17:11,131 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:11,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:17:11,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:17:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:17:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:17:11,132 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:11,174 INFO L93 Difference]: Finished difference Result 259 states and 274 transitions. [2021-11-21 01:17:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:17:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:17:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:11,176 INFO L225 Difference]: With dead ends: 259 [2021-11-21 01:17:11,176 INFO L226 Difference]: Without dead ends: 259 [2021-11-21 01:17:11,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:17:11,177 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 80 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:11,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 545 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:17:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-21 01:17:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 223. [2021-11-21 01:17:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 138 states have (on average 1.9565217391304348) internal successors, (270), 218 states have internal predecessors, (270), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:17:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 274 transitions. [2021-11-21 01:17:11,185 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 274 transitions. Word has length 12 [2021-11-21 01:17:11,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:11,186 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 274 transitions. [2021-11-21 01:17:11,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 274 transitions. [2021-11-21 01:17:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:17:11,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:11,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:11,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:11,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:17:11,397 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr4REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:17:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569776, now seen corresponding path program 1 times [2021-11-21 01:17:11,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:17:11,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104361808] [2021-11-21 01:17:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:11,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:17:11,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:17:11,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:17:11,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:17:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:11,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:17:11,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:11,527 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:17:11,529 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-21 01:17:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:11,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:11,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:11,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104361808] [2021-11-21 01:17:11,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104361808] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:11,578 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:11,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:17:11,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028534599] [2021-11-21 01:17:11,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:11,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:17:11,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:17:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:17:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:11,580 INFO L87 Difference]: Start difference. First operand 223 states and 274 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:11,920 INFO L93 Difference]: Finished difference Result 226 states and 270 transitions. [2021-11-21 01:17:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:17:11,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:17:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:11,922 INFO L225 Difference]: With dead ends: 226 [2021-11-21 01:17:11,922 INFO L226 Difference]: Without dead ends: 226 [2021-11-21 01:17:11,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:17:11,923 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:11,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 200 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:17:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-21 01:17:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 217. [2021-11-21 01:17:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 144 states have (on average 1.8055555555555556) internal successors, (260), 212 states have internal predecessors, (260), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:17:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 264 transitions. [2021-11-21 01:17:11,932 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 264 transitions. Word has length 13 [2021-11-21 01:17:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:11,932 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 264 transitions. [2021-11-21 01:17:11,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 264 transitions. [2021-11-21 01:17:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:17:11,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:11,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:11,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:12,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:17:12,144 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:17:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:12,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569775, now seen corresponding path program 1 times [2021-11-21 01:17:12,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:17:12,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026301167] [2021-11-21 01:17:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:12,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:17:12,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:17:12,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:17:12,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:17:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:12,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:17:12,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:12,284 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:17:12,285 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 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-21 01:17:12,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-11-21 01:17:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:12,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:12,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:12,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026301167] [2021-11-21 01:17:12,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026301167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:12,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:12,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:17:12,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120080197] [2021-11-21 01:17:12,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:12,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:17:12,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:17:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:17:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:17:12,400 INFO L87 Difference]: Start difference. First operand 217 states and 264 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:13,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:13,158 INFO L93 Difference]: Finished difference Result 267 states and 330 transitions. [2021-11-21 01:17:13,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:17:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:17:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:13,162 INFO L225 Difference]: With dead ends: 267 [2021-11-21 01:17:13,162 INFO L226 Difference]: Without dead ends: 267 [2021-11-21 01:17:13,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:17:13,163 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 36 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:13,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 378 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 104 Unchecked, 0.7s Time] [2021-11-21 01:17:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-21 01:17:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 220. [2021-11-21 01:17:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 148 states have (on average 1.7837837837837838) internal successors, (264), 215 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:17:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 268 transitions. [2021-11-21 01:17:13,172 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 268 transitions. Word has length 13 [2021-11-21 01:17:13,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:13,172 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 268 transitions. [2021-11-21 01:17:13,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:13,173 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 268 transitions. [2021-11-21 01:17:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:17:13,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:13,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:13,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:13,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:17:13,385 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr11REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:17:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2060989768, now seen corresponding path program 1 times [2021-11-21 01:17:13,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:17:13,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265562253] [2021-11-21 01:17:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:13,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:17:13,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:17:13,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:17:13,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:17:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:13,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:17:13,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:13,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:13,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:13,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265562253] [2021-11-21 01:17:13,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265562253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:13,529 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:13,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:17:13,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885947438] [2021-11-21 01:17:13,530 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:13,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:17:13,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:17:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:17:13,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:17:13,531 INFO L87 Difference]: Start difference. First operand 220 states and 268 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:13,587 INFO L93 Difference]: Finished difference Result 230 states and 278 transitions. [2021-11-21 01:17:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:17:13,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 01:17:13,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:13,590 INFO L225 Difference]: With dead ends: 230 [2021-11-21 01:17:13,590 INFO L226 Difference]: Without dead ends: 230 [2021-11-21 01:17:13,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:17:13,591 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 13 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:13,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 501 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:17:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-21 01:17:13,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2021-11-21 01:17:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 156 states have (on average 1.7564102564102564) internal successors, (274), 223 states have internal predecessors, (274), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:17:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 278 transitions. [2021-11-21 01:17:13,600 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 278 transitions. Word has length 16 [2021-11-21 01:17:13,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:13,601 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 278 transitions. [2021-11-21 01:17:13,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 278 transitions. [2021-11-21 01:17:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:17:13,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:13,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:13,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:13,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:17:13,813 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:17:13,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2060989718, now seen corresponding path program 1 times [2021-11-21 01:17:13,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:17:13,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560463613] [2021-11-21 01:17:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:13,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:17:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:17:13,815 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:17:13,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:17:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:13,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:17:13,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:13,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:14,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 01:17:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:14,077 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:14,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560463613] [2021-11-21 01:17:14,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560463613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:14,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:14,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:17:14,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140571930] [2021-11-21 01:17:14,078 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:14,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:17:14,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:17:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:17:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:17:14,079 INFO L87 Difference]: Start difference. First operand 228 states and 278 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:14,909 INFO L93 Difference]: Finished difference Result 254 states and 302 transitions. [2021-11-21 01:17:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:17:14,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 01:17:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:14,917 INFO L225 Difference]: With dead ends: 254 [2021-11-21 01:17:14,917 INFO L226 Difference]: Without dead ends: 254 [2021-11-21 01:17:14,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:17:14,918 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 53 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:14,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 532 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:17:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-21 01:17:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 228. [2021-11-21 01:17:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 162 states have (on average 1.6666666666666667) internal successors, (270), 223 states have internal predecessors, (270), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:17:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 274 transitions. [2021-11-21 01:17:14,927 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 274 transitions. Word has length 16 [2021-11-21 01:17:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:14,927 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 274 transitions. [2021-11-21 01:17:14,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 274 transitions. [2021-11-21 01:17:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:17:14,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:14,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:14,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:15,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:17:15,138 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:17:15,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash 533828155, now seen corresponding path program 1 times [2021-11-21 01:17:15,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:17:15,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91229434] [2021-11-21 01:17:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:15,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:17:15,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:17:15,140 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:17:15,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:17:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:15,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:17:15,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:15,258 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:17:15,259 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-21 01:17:15,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 01:17:15,343 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 33 treesize of output 21 [2021-11-21 01:17:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:15,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:15,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:15,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91229434] [2021-11-21 01:17:15,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91229434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:15,435 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:15,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:17:15,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547550704] [2021-11-21 01:17:15,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:15,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:17:15,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:17:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:17:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:17:15,436 INFO L87 Difference]: Start difference. First operand 228 states and 274 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:16,342 INFO L93 Difference]: Finished difference Result 229 states and 272 transitions. [2021-11-21 01:17:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:17:16,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 01:17:16,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:16,345 INFO L225 Difference]: With dead ends: 229 [2021-11-21 01:17:16,345 INFO L226 Difference]: Without dead ends: 229 [2021-11-21 01:17:16,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:17:16,346 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:16,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 597 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:17:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-21 01:17:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-11-21 01:17:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 162 states have (on average 1.654320987654321) internal successors, (268), 223 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:17:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2021-11-21 01:17:16,353 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 17 [2021-11-21 01:17:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:16,354 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2021-11-21 01:17:16,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2021-11-21 01:17:16,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:17:16,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:16,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:16,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:16,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:17:16,566 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:17:16,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 533828156, now seen corresponding path program 1 times [2021-11-21 01:17:16,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:17:16,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815558758] [2021-11-21 01:17:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:16,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:17:16,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:17:16,568 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:17:16,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:17:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:16,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:17:16,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:16,685 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 01:17:16,686 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-21 01:17:16,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-21 01:17:16,768 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 [2021-11-21 01:17:16,910 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 54 treesize of output 36 [2021-11-21 01:17:16,914 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 33 treesize of output 21 [2021-11-21 01:17:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:16,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:17,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:17,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815558758] [2021-11-21 01:17:17,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815558758] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:17:17,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:17:17,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-21 01:17:17,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897246183] [2021-11-21 01:17:17,434 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:17:17,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:17:17,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:17:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:17:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:17:17,435 INFO L87 Difference]: Start difference. First operand 228 states and 272 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:20,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:17:20,316 INFO L93 Difference]: Finished difference Result 228 states and 270 transitions. [2021-11-21 01:17:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:17:20,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 01:17:20,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:17:20,319 INFO L225 Difference]: With dead ends: 228 [2021-11-21 01:17:20,319 INFO L226 Difference]: Without dead ends: 228 [2021-11-21 01:17:20,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:17:20,320 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 6 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:17:20,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 767 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-21 01:17:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-21 01:17:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-11-21 01:17:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 162 states have (on average 1.6419753086419753) internal successors, (266), 223 states have internal predecessors, (266), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:17:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 270 transitions. [2021-11-21 01:17:20,327 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 270 transitions. Word has length 17 [2021-11-21 01:17:20,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:17:20,328 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 270 transitions. [2021-11-21 01:17:20,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:17:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 270 transitions. [2021-11-21 01:17:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:17:20,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:17:20,329 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:17:20,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:17:20,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:17:20,549 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:17:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:17:20,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049946, now seen corresponding path program 1 times [2021-11-21 01:17:20,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:17:20,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289103226] [2021-11-21 01:17:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:20,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:17:20,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:17:20,551 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:17:20,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 01:17:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:20,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:17:20,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:20,738 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:17:20,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-21 01:17:20,776 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 26 treesize of output 22 [2021-11-21 01:17:20,986 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-21 01:17:20,986 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 4 case distinctions, treesize of input 136 treesize of output 47 [2021-11-21 01:17:21,058 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 43 treesize of output 25 [2021-11-21 01:17:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:17:21,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:25,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:17:25,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289103226] [2021-11-21 01:17:25,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289103226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:17:25,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2016536778] [2021-11-21 01:17:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:25,050 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:17:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:17:25,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:17:25,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-21 01:17:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:25,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:17:25,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:25,307 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:17:25,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-21 01:17:25,330 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 26 treesize of output 22 [2021-11-21 01:17:25,478 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-21 01:17:25,478 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 4 case distinctions, treesize of input 135 treesize of output 46 [2021-11-21 01:17:25,552 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 43 treesize of output 25 [2021-11-21 01:17:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:17:25,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:17:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:17:29,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2016536778] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:17:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251744509] [2021-11-21 01:17:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:17:29,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:17:29,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:17:29,036 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:17:29,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-21 01:17:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:17:29,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:17:29,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:17:29,155 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:17:29,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-21 01:17:29,175 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 26 treesize of output 22 [2021-11-21 01:17:29,340 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-21 01:17:29,340 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 4 case distinctions, treesize of input 135 treesize of output 46 [2021-11-21 01:17:29,406 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 43 treesize of output 25 [2021-11-21 01:17:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:17:29,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:18:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:53,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251744509] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:18:53,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:18:53,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 6, 5, 6] total 12 [2021-11-21 01:18:53,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893342417] [2021-11-21 01:18:53,194 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:18:53,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:18:53,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:18:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:18:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-11-21 01:18:53,196 INFO L87 Difference]: Start difference. First operand 228 states and 270 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:18:53,655 INFO L93 Difference]: Finished difference Result 227 states and 268 transitions. [2021-11-21 01:18:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:18:53,656 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-21 01:18:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:18:53,657 INFO L225 Difference]: With dead ends: 227 [2021-11-21 01:18:53,657 INFO L226 Difference]: Without dead ends: 227 [2021-11-21 01:18:53,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=59, Invalid=149, Unknown=2, NotChecked=0, Total=210 [2021-11-21 01:18:53,658 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 17 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 327 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:18:53,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 660 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 327 Unchecked, 0.3s Time] [2021-11-21 01:18:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-21 01:18:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-21 01:18:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 162 states have (on average 1.6296296296296295) internal successors, (264), 222 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:18:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 268 transitions. [2021-11-21 01:18:53,665 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 268 transitions. Word has length 22 [2021-11-21 01:18:53,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:18:53,665 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 268 transitions. [2021-11-21 01:18:53,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:18:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 268 transitions. [2021-11-21 01:18:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:18:53,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:18:53,667 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:18:53,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:53,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:54,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:18:54,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:18:54,278 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-11-21 01:18:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:18:54,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049945, now seen corresponding path program 1 times [2021-11-21 01:18:54,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:18:54,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894027] [2021-11-21 01:18:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:18:54,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:18:54,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:18:54,280 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:18:54,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856bba6d-20e0-4331-b873-d42aa7234df2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-21 01:18:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:18:54,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 01:18:54,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:18:54,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-21 01:18:54,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:18:54,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:18:54,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-21 01:18:54,722 INFO L354 Elim1Store]: treesize reduction 673, result has 1.3 percent of original size [2021-11-21 01:18:54,722 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 4 case distinctions, treesize of input 241 treesize of output 122 [2021-11-21 01:18:54,804 INFO L354 Elim1Store]: treesize reduction 714, result has 1.2 percent of original size [2021-11-21 01:18:54,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 24 [2021-11-21 01:18:54,915 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 44 treesize of output 32 [2021-11-21 01:18:54,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-21 01:18:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:18:54,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:19:24,362 WARN L227 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)