./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0137.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_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/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_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0137.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/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_081ef8cb-c27d-4a1d-aa34-50261e3319ed/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 1c2d362b3c58f37a9b1e964b448eb3d54c85d26676417295a73853b3a7cc716a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:50:29,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:50:29,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:50:29,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:50:29,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:50:29,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:50:29,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:50:29,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:50:29,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:50:29,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:50:29,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:50:29,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:50:29,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:50:29,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:50:29,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:50:29,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:50:29,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:50:29,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:50:29,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:50:29,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:50:29,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:50:29,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:50:29,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:50:29,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:50:29,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:50:29,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:50:29,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:50:29,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:50:29,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:50:29,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:50:29,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:50:29,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:50:29,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:50:29,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:50:29,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:50:29,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:50:29,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:50:29,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:50:29,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:50:29,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:50:29,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:50:29,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-20 22:50:29,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:50:29,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:50:29,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:50:29,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:50:29,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:50:29,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:50:29,539 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:50:29,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:50:29,540 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:50:29,540 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:50:29,540 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:50:29,540 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:50:29,540 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:50:29,541 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:50:29,541 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:50:29,541 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:50:29,541 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:50:29,542 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:50:29,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 22:50:29,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 22:50:29,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:50:29,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:50:29,543 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 22:50:29,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:50:29,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:50:29,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:50:29,544 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 22:50:29,544 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 22:50:29,544 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 22:50:29,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:50:29,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 22:50:29,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:50:29,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:50:29,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:50:29,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:50:29,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:50:29,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:50:29,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:50:29,550 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:50:29,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:50:29,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:50:29,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:50:29,550 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_081ef8cb-c27d-4a1d-aa34-50261e3319ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c2d362b3c58f37a9b1e964b448eb3d54c85d26676417295a73853b3a7cc716a [2021-11-20 22:50:29,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:50:29,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:50:29,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:50:29,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:50:29,894 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:50:29,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/memsafety/test-0137.i [2021-11-20 22:50:29,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data/22b21dc88/39a43bce03064d9bb98a4025e4ac77d7/FLAG4fb6ae696 [2021-11-20 22:50:30,579 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:50:30,580 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/sv-benchmarks/c/memsafety/test-0137.i [2021-11-20 22:50:30,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data/22b21dc88/39a43bce03064d9bb98a4025e4ac77d7/FLAG4fb6ae696 [2021-11-20 22:50:30,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data/22b21dc88/39a43bce03064d9bb98a4025e4ac77d7 [2021-11-20 22:50:30,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:50:30,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:50:30,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:50:30,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:50:30,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:50:30,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:30" (1/1) ... [2021-11-20 22:50:30,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5048a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:30, skipping insertion in model container [2021-11-20 22:50:30,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:30" (1/1) ... [2021-11-20 22:50:30,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:50:30,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:50:31,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:50:31,335 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) [2021-11-20 22:50:31,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2cc73c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:31, skipping insertion in model container [2021-11-20 22:50:31,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:50:31,336 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 22:50:31,339 INFO L158 Benchmark]: Toolchain (without parser) took 494.78ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 45.2MB in the beginning and 74.6MB in the end (delta: -29.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 22:50:31,340 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:50:31,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.07ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 45.0MB in the beginning and 74.9MB in the end (delta: -29.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 22:50:31,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.07ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 45.0MB in the beginning and 74.9MB in the end (delta: -29.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 585]: 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_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/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_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0137.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/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_081ef8cb-c27d-4a1d-aa34-50261e3319ed/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 1c2d362b3c58f37a9b1e964b448eb3d54c85d26676417295a73853b3a7cc716a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:50:33,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:50:33,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:50:33,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:50:33,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:50:33,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:50:33,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:50:33,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:50:33,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:50:33,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:50:33,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:50:33,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:50:33,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:50:33,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:50:33,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:50:33,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:50:33,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:50:33,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:50:33,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:50:33,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:50:33,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:50:33,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:50:33,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:50:33,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:50:33,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:50:33,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:50:33,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:50:33,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:50:33,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:50:33,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:50:33,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:50:33,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:50:33,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:50:33,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:50:33,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:50:33,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:50:33,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:50:33,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:50:33,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:50:33,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:50:33,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:50:33,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-20 22:50:33,685 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:50:33,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:50:33,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:50:33,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:50:33,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:50:33,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:50:33,687 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:50:33,687 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:50:33,687 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:50:33,687 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:50:33,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:50:33,689 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:50:33,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 22:50:33,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 22:50:33,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:50:33,690 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:50:33,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 22:50:33,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:50:33,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:50:33,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:50:33,691 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 22:50:33,692 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 22:50:33,692 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 22:50:33,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:50:33,692 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 22:50:33,692 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 22:50:33,692 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 22:50:33,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:50:33,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:50:33,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:50:33,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 22:50:33,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:50:33,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:50:33,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:50:33,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:50:33,704 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 22:50:33,704 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 22:50:33,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:50:33,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:50:33,705 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_081ef8cb-c27d-4a1d-aa34-50261e3319ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c2d362b3c58f37a9b1e964b448eb3d54c85d26676417295a73853b3a7cc716a [2021-11-20 22:50:34,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:50:34,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:50:34,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:50:34,144 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:50:34,144 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:50:34,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/memsafety/test-0137.i [2021-11-20 22:50:34,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data/b3a770de4/eb3c4baed2044a76a59a5c5c8f074119/FLAG054630f27 [2021-11-20 22:50:34,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:50:34,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/sv-benchmarks/c/memsafety/test-0137.i [2021-11-20 22:50:34,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data/b3a770de4/eb3c4baed2044a76a59a5c5c8f074119/FLAG054630f27 [2021-11-20 22:50:35,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/data/b3a770de4/eb3c4baed2044a76a59a5c5c8f074119 [2021-11-20 22:50:35,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:50:35,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:50:35,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:50:35,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:50:35,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:50:35,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3780adfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35, skipping insertion in model container [2021-11-20 22:50:35,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:50:35,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:50:35,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:50:35,574 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 22:50:35,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:50:35,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:50:35,638 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:50:35,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:50:35,742 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:50:35,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35 WrapperNode [2021-11-20 22:50:35,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:50:35,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:50:35,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:50:35,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:50:35,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,813 INFO L137 Inliner]: procedures = 140, calls = 60, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 137 [2021-11-20 22:50:35,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:50:35,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:50:35,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:50:35,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:50:35,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:50:35,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:50:35,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:50:35,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:50:35,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (1/1) ... [2021-11-20 22:50:35,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:50:35,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:50:35,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:50:35,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:50:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 22:50:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 22:50:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 22:50:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-11-20 22:50:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-11-20 22:50:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 22:50:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:50:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 22:50:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 22:50:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 22:50:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-20 22:50:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-20 22:50:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 22:50:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 22:50:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 22:50:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 22:50:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-11-20 22:50:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-11-20 22:50:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:50:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:50:36,150 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:50:36,152 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:50:36,747 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:50:36,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:50:36,755 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 22:50:36,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:36 BoogieIcfgContainer [2021-11-20 22:50:36,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:50:36,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:50:36,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:50:36,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:50:36,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:50:35" (1/3) ... [2021-11-20 22:50:36,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466d3e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:36, skipping insertion in model container [2021-11-20 22:50:36,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:35" (2/3) ... [2021-11-20 22:50:36,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466d3e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:36, skipping insertion in model container [2021-11-20 22:50:36,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:36" (3/3) ... [2021-11-20 22:50:36,765 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0137.i [2021-11-20 22:50:36,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:50:36,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-20 22:50:36,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:50:36,820 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 [2021-11-20 22:50:36,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-20 22:50:36,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 73 states have (on average 1.9315068493150684) internal successors, (141), 129 states have internal predecessors, (141), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 22:50:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 22:50:36,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:36,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 22:50:36,845 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:50:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 66866992, now seen corresponding path program 1 times [2021-11-20 22:50:36,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:50:36,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698042785] [2021-11-20 22:50:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:36,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:50:36,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:50:36,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:50:36,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 22:50:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:36,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 22:50:36,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:37,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:37,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:50:37,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698042785] [2021-11-20 22:50:37,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698042785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:37,034 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:37,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 22:50:37,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439581558] [2021-11-20 22:50:37,037 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:37,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 22:50:37,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:50:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 22:50:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 22:50:37,081 INFO L87 Difference]: Start difference. First operand has 141 states, 73 states have (on average 1.9315068493150684) internal successors, (141), 129 states have internal predecessors, (141), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:37,116 INFO L93 Difference]: Finished difference Result 141 states and 150 transitions. [2021-11-20 22:50:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 22:50:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 22:50:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:37,131 INFO L225 Difference]: With dead ends: 141 [2021-11-20 22:50:37,132 INFO L226 Difference]: Without dead ends: 139 [2021-11-20 22:50:37,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 22:50:37,139 INFO L933 BasicCegarLoop]: 150 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, 150 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 [2021-11-20 22:50:37,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 22:50:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-20 22:50:37,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-20 22:50:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 72 states have (on average 1.8611111111111112) internal successors, (134), 127 states have internal predecessors, (134), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 22:50:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2021-11-20 22:50:37,190 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 5 [2021-11-20 22:50:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:37,191 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2021-11-20 22:50:37,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2021-11-20 22:50:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 22:50:37,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:37,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 22:50:37,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 22:50:37,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:50:37,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:50:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash 66867054, now seen corresponding path program 1 times [2021-11-20 22:50:37,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:50:37,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584218895] [2021-11-20 22:50:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:37,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:50:37,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:50:37,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:50:37,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 22:50:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:37,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 22:50:37,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:37,552 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 [2021-11-20 22:50:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:37,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:37,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:50:37,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584218895] [2021-11-20 22:50:37,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584218895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:37,598 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:37,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 22:50:37,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085269205] [2021-11-20 22:50:37,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:37,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:50:37,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:50:37,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:50:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:50:37,612 INFO L87 Difference]: Start difference. First operand 139 states and 148 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) [2021-11-20 22:50:37,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:37,863 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-11-20 22:50:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:50:37,864 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 [2021-11-20 22:50:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:37,866 INFO L225 Difference]: With dead ends: 161 [2021-11-20 22:50:37,866 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 22:50:37,866 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 [2021-11-20 22:50:37,868 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 87 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:37,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 141 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 22:50:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 22:50:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2021-11-20 22:50:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 72 states have (on average 1.8472222222222223) internal successors, (133), 126 states have internal predecessors, (133), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 22:50:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 147 transitions. [2021-11-20 22:50:37,899 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 147 transitions. Word has length 5 [2021-11-20 22:50:37,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:37,899 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 147 transitions. [2021-11-20 22:50:37,899 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) [2021-11-20 22:50:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 147 transitions. [2021-11-20 22:50:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 22:50:37,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:37,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 22:50:37,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 22:50:38,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:50:38,112 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:50:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash 66867055, now seen corresponding path program 1 times [2021-11-20 22:50:38,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:50:38,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805305306] [2021-11-20 22:50:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:38,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:50:38,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:50:38,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:50:38,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 22:50:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:38,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 22:50:38,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:38,224 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 [2021-11-20 22:50:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:38,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:38,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:50:38,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805305306] [2021-11-20 22:50:38,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805305306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:38,329 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:38,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 22:50:38,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006263131] [2021-11-20 22:50:38,330 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:38,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:50:38,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:50:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:50:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:50:38,332 INFO L87 Difference]: Start difference. First operand 138 states and 147 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) [2021-11-20 22:50:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:38,871 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-11-20 22:50:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:50:38,872 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 [2021-11-20 22:50:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:38,876 INFO L225 Difference]: With dead ends: 160 [2021-11-20 22:50:38,876 INFO L226 Difference]: Without dead ends: 160 [2021-11-20 22:50:38,876 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 [2021-11-20 22:50:38,877 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 138 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:38,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 183 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 22:50:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-20 22:50:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2021-11-20 22:50:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 72 states have (on average 1.8333333333333333) internal successors, (132), 125 states have internal predecessors, (132), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 22:50:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 146 transitions. [2021-11-20 22:50:38,890 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 146 transitions. Word has length 5 [2021-11-20 22:50:38,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:38,890 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 146 transitions. [2021-11-20 22:50:38,890 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) [2021-11-20 22:50:38,891 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 146 transitions. [2021-11-20 22:50:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 22:50:38,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:38,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:38,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 22:50:39,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:50:39,105 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting list_addErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:50:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -828252735, now seen corresponding path program 1 times [2021-11-20 22:50:39,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:50:39,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182830183] [2021-11-20 22:50:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:39,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:50:39,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:50:39,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:50:39,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 22:50:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:39,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 22:50:39,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:39,238 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 22:50:39,238 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 17 treesize of output 22 [2021-11-20 22:50:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:39,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:39,428 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:50:39,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182830183] [2021-11-20 22:50:39,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182830183] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:39,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:39,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-20 22:50:39,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538538323] [2021-11-20 22:50:39,429 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:39,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 22:50:39,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:50:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 22:50:39,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:50:39,431 INFO L87 Difference]: Start difference. First operand 137 states and 146 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:39,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:39,922 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2021-11-20 22:50:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 22:50:39,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 22:50:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:39,925 INFO L225 Difference]: With dead ends: 172 [2021-11-20 22:50:39,925 INFO L226 Difference]: Without dead ends: 172 [2021-11-20 22:50:39,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-20 22:50:39,926 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 387 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:39,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 214 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 22:50:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-20 22:50:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 145. [2021-11-20 22:50:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 83 states have (on average 1.7951807228915662) internal successors, (149), 132 states have internal predecessors, (149), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 22:50:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 163 transitions. [2021-11-20 22:50:39,938 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 163 transitions. Word has length 8 [2021-11-20 22:50:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:39,939 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 163 transitions. [2021-11-20 22:50:39,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:39,939 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 163 transitions. [2021-11-20 22:50:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 22:50:39,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:39,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:39,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 22:50:40,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:50:40,151 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting list_addErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:50:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash -828252734, now seen corresponding path program 1 times [2021-11-20 22:50:40,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:50:40,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309902318] [2021-11-20 22:50:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:40,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:50:40,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:50:40,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:50:40,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 22:50:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:40,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 22:50:40,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:40,365 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 22:50:40,366 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 28 treesize of output 30 [2021-11-20 22:50:40,375 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 22:50:40,376 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 27 treesize of output 23 [2021-11-20 22:50:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:40,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:43,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:50:43,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309902318] [2021-11-20 22:50:43,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309902318] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:43,045 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:43,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 22:50:43,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606849731] [2021-11-20 22:50:43,045 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:43,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 22:50:43,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:50:43,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 22:50:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-20 22:50:43,046 INFO L87 Difference]: Start difference. First operand 145 states and 163 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:43,759 INFO L93 Difference]: Finished difference Result 167 states and 192 transitions. [2021-11-20 22:50:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 22:50:43,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 22:50:43,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:43,763 INFO L225 Difference]: With dead ends: 167 [2021-11-20 22:50:43,763 INFO L226 Difference]: Without dead ends: 167 [2021-11-20 22:50:43,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=30, Invalid=79, Unknown=1, NotChecked=0, Total=110 [2021-11-20 22:50:43,764 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 12 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:43,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 595 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 205 Unchecked, 0.7s Time] [2021-11-20 22:50:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-20 22:50:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2021-11-20 22:50:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 93 states have (on average 1.7204301075268817) internal successors, (160), 142 states have internal predecessors, (160), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:50:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2021-11-20 22:50:43,783 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 8 [2021-11-20 22:50:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:43,784 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2021-11-20 22:50:43,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2021-11-20 22:50:43,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 22:50:43,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:43,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:43,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 22:50:43,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:50:43,996 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting list_addErr2REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:50:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1381928766, now seen corresponding path program 1 times [2021-11-20 22:50:43,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:50:43,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615690560] [2021-11-20 22:50:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:43,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:50:43,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:50:43,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:50:44,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 22:50:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:44,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 22:50:44,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:44,200 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-20 22:50:44,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 20 [2021-11-20 22:50:44,342 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-20 22:50:44,343 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 60 treesize of output 15 [2021-11-20 22:50:44,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 22:50:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:44,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:44,592 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-20 22:50:44,593 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 27 treesize of output 26 [2021-11-20 22:50:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:59,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:50:59,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615690560] [2021-11-20 22:50:59,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615690560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:59,731 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:59,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-20 22:50:59,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674320512] [2021-11-20 22:50:59,731 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:59,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 22:50:59,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:50:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 22:50:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=195, Unknown=4, NotChecked=0, Total=240 [2021-11-20 22:50:59,732 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:04,800 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2021-11-20 22:51:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 22:51:04,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 22:51:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:04,803 INFO L225 Difference]: With dead ends: 174 [2021-11-20 22:51:04,803 INFO L226 Difference]: Without dead ends: 174 [2021-11-20 22:51:04,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=92, Invalid=323, Unknown=5, NotChecked=0, Total=420 [2021-11-20 22:51:04,805 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 80 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:04,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 784 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 291 Invalid, 0 Unknown, 77 Unchecked, 0.8s Time] [2021-11-20 22:51:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-20 22:51:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2021-11-20 22:51:04,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 102 states have (on average 1.7254901960784315) internal successors, (176), 151 states have internal predecessors, (176), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:51:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 194 transitions. [2021-11-20 22:51:04,814 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 194 transitions. Word has length 10 [2021-11-20 22:51:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:04,814 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 194 transitions. [2021-11-20 22:51:04,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 194 transitions. [2021-11-20 22:51:04,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 22:51:04,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:04,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:04,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:05,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:51:05,027 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting list_addErr3REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:51:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:05,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1381928765, now seen corresponding path program 1 times [2021-11-20 22:51:05,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:51:05,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346292604] [2021-11-20 22:51:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:05,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:51:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:51:05,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:51:05,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 22:51:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:05,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 22:51:05,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:05,224 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 22:51:05,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-20 22:51:05,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-20 22:51:05,448 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-20 22:51:05,449 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 116 treesize of output 71 [2021-11-20 22:51:05,530 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-20 22:51:05,530 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 68 treesize of output 23 [2021-11-20 22:51:05,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 22:51:05,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 22:51:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:05,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:19,784 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|))) (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_9) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_11) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|)) (.cse3 (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))) is different from false [2021-11-20 22:51:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:19,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:51:19,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346292604] [2021-11-20 22:51:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346292604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:19,941 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:19,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-20 22:51:19,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341685238] [2021-11-20 22:51:19,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:19,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 22:51:19,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:51:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 22:51:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=173, Unknown=2, NotChecked=26, Total=240 [2021-11-20 22:51:19,943 INFO L87 Difference]: Start difference. First operand 167 states and 194 transitions. Second operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:21,961 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#gl_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (= (_ bv8 32) (select |c_#length| (_ bv3 32))) (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|))) (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_9) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_11) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|)) (.cse3 (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_15|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))) (= (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.offset|) (= |c_~#gl_list~0.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| (_ bv3 32)))) (_ bv1 1))) (= (_ bv3 32) |c_~#gl_list~0.base|)) is different from false [2021-11-20 22:51:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:22,814 INFO L93 Difference]: Finished difference Result 167 states and 193 transitions. [2021-11-20 22:51:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 22:51:22,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 22:51:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:22,816 INFO L225 Difference]: With dead ends: 167 [2021-11-20 22:51:22,817 INFO L226 Difference]: Without dead ends: 167 [2021-11-20 22:51:22,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=41, Invalid=174, Unknown=3, NotChecked=54, Total=272 [2021-11-20 22:51:22,818 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 2 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 259 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:22,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 844 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 259 Unchecked, 0.8s Time] [2021-11-20 22:51:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-20 22:51:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-11-20 22:51:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 151 states have internal predecessors, (175), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:51:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 193 transitions. [2021-11-20 22:51:22,826 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 193 transitions. Word has length 10 [2021-11-20 22:51:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:22,826 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 193 transitions. [2021-11-20 22:51:22,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 193 transitions. [2021-11-20 22:51:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 22:51:22,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:22,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:22,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:23,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:51:23,048 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting list_addErr4REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:51:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash 109881212, now seen corresponding path program 1 times [2021-11-20 22:51:23,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:51:23,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091189140] [2021-11-20 22:51:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:23,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:51:23,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:51:23,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:51:23,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 22:51:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:23,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 22:51:23,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:23,126 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 [2021-11-20 22:51:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:23,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:23,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:51:23,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091189140] [2021-11-20 22:51:23,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091189140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:23,240 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:23,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 22:51:23,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178867305] [2021-11-20 22:51:23,240 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:23,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 22:51:23,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:51:23,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 22:51:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 22:51:23,241 INFO L87 Difference]: Start difference. First operand 167 states and 193 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-20 22:51:23,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:23,885 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2021-11-20 22:51:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 22:51:23,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 11 [2021-11-20 22:51:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:23,899 INFO L225 Difference]: With dead ends: 191 [2021-11-20 22:51:23,900 INFO L226 Difference]: Without dead ends: 191 [2021-11-20 22:51:23,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:51:23,901 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 128 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:23,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 328 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 22:51:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-20 22:51:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 166. [2021-11-20 22:51:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 102 states have (on average 1.6666666666666667) internal successors, (170), 150 states have internal predecessors, (170), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:51:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 188 transitions. [2021-11-20 22:51:23,909 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 188 transitions. Word has length 11 [2021-11-20 22:51:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:23,909 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 188 transitions. [2021-11-20 22:51:23,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-20 22:51:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 188 transitions. [2021-11-20 22:51:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 22:51:23,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:23,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:23,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:24,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:51:24,125 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting list_addErr5REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:51:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash 109881213, now seen corresponding path program 1 times [2021-11-20 22:51:24,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:51:24,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524796083] [2021-11-20 22:51:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:24,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:51:24,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:51:24,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:51:24,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 22:51:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:24,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 22:51:24,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:24,211 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 [2021-11-20 22:51:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:24,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:24,664 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:51:24,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524796083] [2021-11-20 22:51:24,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524796083] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:24,664 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 22:51:24,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073275256] [2021-11-20 22:51:24,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:24,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 22:51:24,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:51:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 22:51:24,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 22:51:24,666 INFO L87 Difference]: Start difference. First operand 166 states and 188 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:26,962 INFO L93 Difference]: Finished difference Result 191 states and 204 transitions. [2021-11-20 22:51:26,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:51:26,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 22:51:26,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:26,965 INFO L225 Difference]: With dead ends: 191 [2021-11-20 22:51:26,965 INFO L226 Difference]: Without dead ends: 191 [2021-11-20 22:51:26,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:51:26,966 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 146 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:26,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 594 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 22:51:26,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-20 22:51:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 166. [2021-11-20 22:51:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 102 states have (on average 1.6274509803921569) internal successors, (166), 150 states have internal predecessors, (166), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:51:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2021-11-20 22:51:26,972 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 11 [2021-11-20 22:51:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:26,972 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2021-11-20 22:51:26,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2021-11-20 22:51:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 22:51:26,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:26,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:26,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:27,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:51:27,183 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting list_addErr8REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:51:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1778337633, now seen corresponding path program 1 times [2021-11-20 22:51:27,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:51:27,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052284788] [2021-11-20 22:51:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:27,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:51:27,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:51:27,185 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:51:27,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 22:51:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:27,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 22:51:27,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:27,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:27,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:51:27,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052284788] [2021-11-20 22:51:27,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052284788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:27,350 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:27,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 22:51:27,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399536395] [2021-11-20 22:51:27,350 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:27,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:51:27,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:51:27,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:51:27,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:51:27,351 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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) [2021-11-20 22:51:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:27,670 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2021-11-20 22:51:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:51:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2021-11-20 22:51:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:27,672 INFO L225 Difference]: With dead ends: 165 [2021-11-20 22:51:27,672 INFO L226 Difference]: Without dead ends: 165 [2021-11-20 22:51:27,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:51:27,673 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 22 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:27,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 286 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:51:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-20 22:51:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-20 22:51:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.5980392156862746) internal successors, (163), 149 states have internal predecessors, (163), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:51:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 181 transitions. [2021-11-20 22:51:27,680 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 181 transitions. Word has length 13 [2021-11-20 22:51:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:27,681 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 181 transitions. [2021-11-20 22:51:27,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-20 22:51:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 181 transitions. [2021-11-20 22:51:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 22:51:27,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:27,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:27,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:27,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:51:27,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting list_addErr9REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:51:27,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1778337632, now seen corresponding path program 1 times [2021-11-20 22:51:27,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:51:27,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104478199] [2021-11-20 22:51:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:27,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:51:27,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:51:27,891 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:51:27,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 22:51:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:27,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 22:51:27,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:28,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:28,234 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 [2021-11-20 22:51:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:28,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:51:28,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104478199] [2021-11-20 22:51:28,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104478199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:28,383 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:28,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-20 22:51:28,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746189399] [2021-11-20 22:51:28,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:28,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 22:51:28,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:51:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 22:51:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:51:28,385 INFO L87 Difference]: Start difference. First operand 165 states and 181 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:29,514 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2021-11-20 22:51:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 22:51:29,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 22:51:29,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:29,516 INFO L225 Difference]: With dead ends: 167 [2021-11-20 22:51:29,516 INFO L226 Difference]: Without dead ends: 167 [2021-11-20 22:51:29,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-20 22:51:29,517 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 220 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:29,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 498 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 22:51:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-20 22:51:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2021-11-20 22:51:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 102 states have (on average 1.5686274509803921) internal successors, (160), 148 states have internal predecessors, (160), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:51:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 178 transitions. [2021-11-20 22:51:29,525 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 178 transitions. Word has length 13 [2021-11-20 22:51:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:29,525 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 178 transitions. [2021-11-20 22:51:29,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 178 transitions. [2021-11-20 22:51:29,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 22:51:29,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:29,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:29,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-20 22:51:29,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:51:29,734 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting list_emptyErr0REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:51:29,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:29,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1358598366, now seen corresponding path program 1 times [2021-11-20 22:51:29,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:51:29,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129223392] [2021-11-20 22:51:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:29,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:51:29,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:51:29,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:51:29,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 22:51:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:29,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 22:51:29,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:29,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:30,139 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 22:51:30,140 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 21 treesize of output 20 [2021-11-20 22:51:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:30,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:51:30,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129223392] [2021-11-20 22:51:30,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129223392] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:30,152 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:30,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 22:51:30,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752064883] [2021-11-20 22:51:30,152 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:30,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 22:51:30,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:51:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 22:51:30,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:51:30,153 INFO L87 Difference]: Start difference. First operand 164 states and 178 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:51:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:30,889 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2021-11-20 22:51:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:51:30,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-20 22:51:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:30,891 INFO L225 Difference]: With dead ends: 165 [2021-11-20 22:51:30,891 INFO L226 Difference]: Without dead ends: 165 [2021-11-20 22:51:30,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:51:30,892 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 161 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:30,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 306 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 22:51:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-20 22:51:30,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2021-11-20 22:51:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.5588235294117647) internal successors, (159), 147 states have internal predecessors, (159), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:51:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 177 transitions. [2021-11-20 22:51:30,898 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 177 transitions. Word has length 22 [2021-11-20 22:51:30,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:30,899 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 177 transitions. [2021-11-20 22:51:30,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 22:51:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 177 transitions. [2021-11-20 22:51:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 22:51:30,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:30,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:30,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:31,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:51:31,100 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting list_emptyErr1REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:51:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1358598367, now seen corresponding path program 1 times [2021-11-20 22:51:31,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:51:31,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560707404] [2021-11-20 22:51:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:31,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:51:31,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:51:31,102 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:51:31,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 22:51:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:31,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 22:51:31,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:31,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:31,812 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 [2021-11-20 22:51:32,111 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 22:51:32,111 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 20 [2021-11-20 22:51:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:32,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:51:32,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560707404] [2021-11-20 22:51:32,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560707404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 22:51:32,307 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:51:32,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 13 [2021-11-20 22:51:32,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740785732] [2021-11-20 22:51:32,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 22:51:32,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 22:51:32,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 22:51:32,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 22:51:32,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 22:51:32,309 INFO L87 Difference]: Start difference. First operand 163 states and 177 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 22:51:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:33,956 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2021-11-20 22:51:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:51:33,957 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-20 22:51:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:33,958 INFO L225 Difference]: With dead ends: 159 [2021-11-20 22:51:33,958 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 22:51:33,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-20 22:51:33,959 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 167 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:33,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 434 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 22:51:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 22:51:33,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-11-20 22:51:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 102 states have (on average 1.5) internal successors, (153), 142 states have internal predecessors, (153), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 22:51:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 171 transitions. [2021-11-20 22:51:33,966 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 171 transitions. Word has length 22 [2021-11-20 22:51:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:33,967 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 171 transitions. [2021-11-20 22:51:33,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 22:51:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 171 transitions. [2021-11-20 22:51:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 22:51:33,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:51:33,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:51:33,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:34,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 22:51:34,186 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting list_addErr2REQUIRES_VIOLATION === [val_from_nodeErr0REQUIRES_VIOLATION, val_from_nodeErr1REQUIRES_VIOLATION, list_emptyErr0REQUIRES_VIOLATION, list_emptyErr1REQUIRES_VIOLATION (and 52 more)] === [2021-11-20 22:51:34,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:51:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash -868531821, now seen corresponding path program 1 times [2021-11-20 22:51:34,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 22:51:34,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803367347] [2021-11-20 22:51:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:34,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 22:51:34,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 22:51:34,188 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 22:51:34,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 22:51:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:34,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 22:51:34,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:34,379 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 [2021-11-20 22:51:34,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 22:51:34,782 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-20 22:51:34,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 58 [2021-11-20 22:51:34,972 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-20 22:51:34,972 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 4 case distinctions, treesize of input 83 treesize of output 34 [2021-11-20 22:51:35,276 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 69 treesize of output 57 [2021-11-20 22:51:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:35,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:47,259 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_20| (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_20| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_20| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_20|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_15) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_20|))))) is different from false [2021-11-20 22:51:48,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 22:51:48,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803367347] [2021-11-20 22:51:48,761 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 22:51:48,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1760418076] [2021-11-20 22:51:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:51:48,762 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 22:51:48,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 22:51:48,767 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 22:51:48,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-20 22:51:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:51:49,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 22:51:49,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:51:49,256 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 22:51:49,256 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 14 treesize of output 19 [2021-11-20 22:51:49,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 22:51:50,322 INFO L354 Elim1Store]: treesize reduction 81, result has 35.7 percent of original size [2021-11-20 22:51:50,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 44 treesize of output 75 [2021-11-20 22:51:50,652 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-20 22:51:50,652 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 87 treesize of output 38 [2021-11-20 22:51:51,284 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 47 treesize of output 35 [2021-11-20 22:51:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:51:51,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:51:58,379 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_22| (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_22| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_22| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_22|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_15) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_22|))))))) is different from false [2021-11-20 22:52:01,324 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 10930 treesize of output 10898 [2021-11-20 22:52:01,376 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 22:52:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369802394] [2021-11-20 22:52:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:52:01,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:01,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:52:01,382 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:52:01,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 22:52:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:52:01,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 22:52:01,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:52:01,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 22:52:02,075 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-11-20 22:52:02,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 61 [2021-11-20 22:52:02,227 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-20 22:52:02,228 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 86 treesize of output 37 [2021-11-20 22:52:02,392 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 69 treesize of output 57 [2021-11-20 22:52:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:52:02,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:52:10,792 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_24| (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_15) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24|))))))) is different from false [2021-11-20 22:52:13,140 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~0#1.base_24| (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24|) |ULTIMATE.start_gl_insert_~node~0#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~0#1.offset|) v_DerPreprocessor_15) (bvadd |ULTIMATE.start_gl_insert_~node~0#1.offset| (_ bv3 32)) v_DerPreprocessor_16)) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|))))))))))))))) (_ bv1 1))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~0#1.base_24|))))))) is different from false [2021-11-20 22:52:13,213 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 45678 treesize of output 45550 [2021-11-20 22:52:13,404 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 22:52:13,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:52:13,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-20 22:52:13,405 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-20 22:52:13,405 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-20 22:52:13,411 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr2REQUIRES_VIOLATION (55 of 56 remaining) [2021-11-20 22:52:13,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr0REQUIRES_VIOLATION (54 of 56 remaining) [2021-11-20 22:52:13,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location val_from_nodeErr1REQUIRES_VIOLATION (53 of 56 remaining) [2021-11-20 22:52:13,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr0REQUIRES_VIOLATION (52 of 56 remaining) [2021-11-20 22:52:13,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_emptyErr1REQUIRES_VIOLATION (51 of 56 remaining) [2021-11-20 22:52:13,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr0REQUIRES_VIOLATION (50 of 56 remaining) [2021-11-20 22:52:13,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr1REQUIRES_VIOLATION (49 of 56 remaining) [2021-11-20 22:52:13,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr2REQUIRES_VIOLATION (48 of 56 remaining) [2021-11-20 22:52:13,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_delErr3REQUIRES_VIOLATION (47 of 56 remaining) [2021-11-20 22:52:13,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr0REQUIRES_VIOLATION (46 of 56 remaining) [2021-11-20 22:52:13,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr1REQUIRES_VIOLATION (45 of 56 remaining) [2021-11-20 22:52:13,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr3REQUIRES_VIOLATION (44 of 56 remaining) [2021-11-20 22:52:13,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr4REQUIRES_VIOLATION (43 of 56 remaining) [2021-11-20 22:52:13,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr5REQUIRES_VIOLATION (42 of 56 remaining) [2021-11-20 22:52:13,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr6REQUIRES_VIOLATION (41 of 56 remaining) [2021-11-20 22:52:13,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr7REQUIRES_VIOLATION (40 of 56 remaining) [2021-11-20 22:52:13,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr8REQUIRES_VIOLATION (39 of 56 remaining) [2021-11-20 22:52:13,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_addErr9REQUIRES_VIOLATION (38 of 56 remaining) [2021-11-20 22:52:13,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (37 of 56 remaining) [2021-11-20 22:52:13,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (36 of 56 remaining) [2021-11-20 22:52:13,416 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (35 of 56 remaining) [2021-11-20 22:52:13,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (34 of 56 remaining) [2021-11-20 22:52:13,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (33 of 56 remaining) [2021-11-20 22:52:13,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (32 of 56 remaining) [2021-11-20 22:52:13,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (31 of 56 remaining) [2021-11-20 22:52:13,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (30 of 56 remaining) [2021-11-20 22:52:13,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (29 of 56 remaining) [2021-11-20 22:52:13,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (28 of 56 remaining) [2021-11-20 22:52:13,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (27 of 56 remaining) [2021-11-20 22:52:13,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (26 of 56 remaining) [2021-11-20 22:52:13,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (25 of 56 remaining) [2021-11-20 22:52:13,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (24 of 56 remaining) [2021-11-20 22:52:13,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (23 of 56 remaining) [2021-11-20 22:52:13,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (22 of 56 remaining) [2021-11-20 22:52:13,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (21 of 56 remaining) [2021-11-20 22:52:13,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (20 of 56 remaining) [2021-11-20 22:52:13,419 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (19 of 56 remaining) [2021-11-20 22:52:13,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (18 of 56 remaining) [2021-11-20 22:52:13,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (17 of 56 remaining) [2021-11-20 22:52:13,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (16 of 56 remaining) [2021-11-20 22:52:13,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (15 of 56 remaining) [2021-11-20 22:52:13,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (14 of 56 remaining) [2021-11-20 22:52:13,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (13 of 56 remaining) [2021-11-20 22:52:13,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (12 of 56 remaining) [2021-11-20 22:52:13,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (11 of 56 remaining) [2021-11-20 22:52:13,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (10 of 56 remaining) [2021-11-20 22:52:13,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (9 of 56 remaining) [2021-11-20 22:52:13,421 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (8 of 56 remaining) [2021-11-20 22:52:13,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (7 of 56 remaining) [2021-11-20 22:52:13,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (6 of 56 remaining) [2021-11-20 22:52:13,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (5 of 56 remaining) [2021-11-20 22:52:13,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (4 of 56 remaining) [2021-11-20 22:52:13,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 56 remaining) [2021-11-20 22:52:13,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 56 remaining) [2021-11-20 22:52:13,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 56 remaining) [2021-11-20 22:52:13,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK (0 of 56 remaining) [2021-11-20 22:52:13,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-20 22:52:13,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 22:52:13,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 22:52:14,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:52:14,031 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:52:14,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 22:52:14,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:52:14 BoogieIcfgContainer [2021-11-20 22:52:14,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 22:52:14,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 22:52:14,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 22:52:14,053 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 22:52:14,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:36" (3/4) ... [2021-11-20 22:52:14,056 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 22:52:14,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 22:52:14,057 INFO L158 Benchmark]: Toolchain (without parser) took 98956.40ms. Allocated memory was 73.4MB in the beginning and 144.7MB in the end (delta: 71.3MB). Free memory was 57.5MB in the beginning and 97.7MB in the end (delta: -40.3MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-11-20 22:52:14,057 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 73.4MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:52:14,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 641.95ms. Allocated memory is still 73.4MB. Free memory was 57.3MB in the beginning and 44.3MB in the end (delta: 13.0MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-11-20 22:52:14,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.27ms. Allocated memory is still 73.4MB. Free memory was 44.3MB in the beginning and 41.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:52:14,059 INFO L158 Benchmark]: Boogie Preprocessor took 48.99ms. Allocated memory is still 73.4MB. Free memory was 41.7MB in the beginning and 39.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:52:14,059 INFO L158 Benchmark]: RCFGBuilder took 893.37ms. Allocated memory is still 73.4MB. Free memory was 39.5MB in the beginning and 38.7MB in the end (delta: 785.6kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 22:52:14,059 INFO L158 Benchmark]: TraceAbstraction took 97293.09ms. Allocated memory was 73.4MB in the beginning and 144.7MB in the end (delta: 71.3MB). Free memory was 38.4MB in the beginning and 97.7MB in the end (delta: -59.4MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2021-11-20 22:52:14,060 INFO L158 Benchmark]: Witness Printer took 3.71ms. Allocated memory is still 144.7MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:52:14,062 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 73.4MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 641.95ms. Allocated memory is still 73.4MB. Free memory was 57.3MB in the beginning and 44.3MB in the end (delta: 13.0MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.27ms. Allocated memory is still 73.4MB. Free memory was 44.3MB in the beginning and 41.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.99ms. Allocated memory is still 73.4MB. Free memory was 41.7MB in the beginning and 39.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 893.37ms. Allocated memory is still 73.4MB. Free memory was 39.5MB in the beginning and 38.7MB in the end (delta: 785.6kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 97293.09ms. Allocated memory was 73.4MB in the beginning and 144.7MB in the end (delta: 71.3MB). Free memory was 38.4MB in the beginning and 97.7MB in the end (delta: -59.4MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. * Witness Printer took 3.71ms. Allocated memory is still 144.7MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L564] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L625] CALL gl_read() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new [L536] new->next = next [L537] new->prev = prev [L538] prev->next = new [L547] RET __list_add(new, head, head->next) [L571] RET list_add(&node->linkage, &gl_list) [L576] RET gl_insert(__VERIFIER_nondet_int()) [L578] COND TRUE __VERIFIER_nondet_int() [L576] CALL gl_insert(__VERIFIER_nondet_int()) [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L571] CALL list_add(&node->linkage, &gl_list) [L547] EXPR head->next [L547] CALL __list_add(new, head, head->next) [L535] next->prev = new - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 620]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 621]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 141 locations, 56 error locations. Started 1 CEGAR loops. OverallTime: 97.2s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1590 SdHoareTripleChecker+Valid, 9.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1550 mSDsluCounter, 5357 SdHoareTripleChecker+Invalid, 8.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 541 IncrementalHoareTripleChecker+Unchecked, 3936 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2916 IncrementalHoareTripleChecker+Invalid, 3518 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 1421 mSDtfsCounter, 2916 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 291 GetRequests, 166 SyntacticMatches, 8 SemanticMatches, 117 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 39.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=6, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 146 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 50.8s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 285 ConstructedInterpolants, 29 QuantifiedInterpolants, 3821 SizeOfPredicates, 99 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 27 InterpolantComputations, 26 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 22:52:14,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081ef8cb-c27d-4a1d-aa34-50261e3319ed/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN