./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 88d908807c562516d59e3074a7f6cea9889fd89a ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 88d908807c562516d59e3074a7f6cea9889fd89a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:08:14,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:08:14,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:08:14,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:08:14,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:08:14,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:08:14,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:08:14,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:08:14,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:08:14,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:08:14,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:08:14,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:08:14,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:08:14,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:08:14,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:08:14,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:08:14,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:08:14,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:08:14,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:08:14,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:08:14,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:08:14,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:08:14,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:08:14,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:08:14,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:08:14,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:08:14,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:08:14,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:08:14,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:08:14,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:08:14,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:08:14,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:08:14,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:08:14,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:08:14,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:08:14,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:08:14,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:08:14,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:08:14,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:08:14,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:08:14,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:08:14,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:08:14,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:08:14,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:08:14,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:08:14,593 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:08:14,593 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:08:14,593 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:08:14,593 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:08:14,594 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:08:14,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:08:14,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:08:14,598 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:08:14,598 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:08:14,599 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:08:14,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:08:14,600 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:08:14,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:08:14,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:08:14,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:08:14,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:08:14,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:08:14,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:08:14,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:08:14,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:08:14,603 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:08:14,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:08:14,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:08:14,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:08:14,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:08:14,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:08:14,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:08:14,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:08:14,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:08:14,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:08:14,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:08:14,606 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:08:14,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:08:14,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:08:14,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:08:14,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:08:14,607 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_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88d908807c562516d59e3074a7f6cea9889fd89a [2021-10-13 08:08:14,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:08:14,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:08:14,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:08:14,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:08:14,922 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:08:14,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-10-13 08:08:15,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data/795e23847/aa75acc0a313443cb61ae6f77b48c392/FLAG67f12c9a3 [2021-10-13 08:08:15,472 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:08:15,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-10-13 08:08:15,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data/795e23847/aa75acc0a313443cb61ae6f77b48c392/FLAG67f12c9a3 [2021-10-13 08:08:15,830 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data/795e23847/aa75acc0a313443cb61ae6f77b48c392 [2021-10-13 08:08:15,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:08:15,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:08:15,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:08:15,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:08:15,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:08:15,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:08:15" (1/1) ... [2021-10-13 08:08:15,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8901748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:15, skipping insertion in model container [2021-10-13 08:08:15,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:08:15" (1/1) ... [2021-10-13 08:08:15,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:08:15,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:08:16,045 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2021-10-13 08:08:16,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:08:16,070 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:08:16,082 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2021-10-13 08:08:16,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:08:16,128 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:08:16,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16 WrapperNode [2021-10-13 08:08:16,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:08:16,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:08:16,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:08:16,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:08:16,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:08:16,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:08:16,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:08:16,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:08:16,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:08:16,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:08:16,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:08:16,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:08:16,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (1/1) ... [2021-10-13 08:08:16,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:08:16,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:08:16,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:08:16,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:08:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:08:16,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:08:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:08:16,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:08:16,616 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:08:16,616 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-13 08:08:16,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:08:16 BoogieIcfgContainer [2021-10-13 08:08:16,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:08:16,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:08:16,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:08:16,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:08:16,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:08:15" (1/3) ... [2021-10-13 08:08:16,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fe38bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:08:16, skipping insertion in model container [2021-10-13 08:08:16,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:16" (2/3) ... [2021-10-13 08:08:16,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fe38bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:08:16, skipping insertion in model container [2021-10-13 08:08:16,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:08:16" (3/3) ... [2021-10-13 08:08:16,629 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2021-10-13 08:08:16,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:08:16,635 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:08:16,687 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:08:16,694 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-13 08:08:16,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:08:16,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:08:16,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:16,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:16,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:08:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash 194610778, now seen corresponding path program 1 times [2021-10-13 08:08:16,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:08:16,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744953221] [2021-10-13 08:08:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:16,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:08:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:17,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:08:17,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744953221] [2021-10-13 08:08:17,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744953221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:17,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:17,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:08:17,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753921928] [2021-10-13 08:08:17,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:08:17,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:08:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:08:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:08:17,038 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:17,090 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2021-10-13 08:08:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:08:17,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 08:08:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:17,103 INFO L225 Difference]: With dead ends: 27 [2021-10-13 08:08:17,103 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 08:08:17,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:08:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 08:08:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2021-10-13 08:08:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-13 08:08:17,144 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 8 [2021-10-13 08:08:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:17,145 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-13 08:08:17,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-10-13 08:08:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:08:17,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:17,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:17,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:08:17,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:08:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:17,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1737735212, now seen corresponding path program 1 times [2021-10-13 08:08:17,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:08:17,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357245766] [2021-10-13 08:08:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:17,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:08:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:17,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:08:17,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357245766] [2021-10-13 08:08:17,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357245766] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:08:17,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336184639] [2021-10-13 08:08:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:17,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:08:17,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:08:17,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:08:17,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:08:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:17,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:08:17,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:17,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:08:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:17,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336184639] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:08:17,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [435556780] [2021-10-13 08:08:17,454 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-13 08:08:17,454 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:08:17,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:08:17,466 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:08:17,467 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:08:17,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:08:17,515 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:08:17,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:08:17,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:08:17,519 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:08:17,519 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:08:17,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:08:17,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-13 08:08:17,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:08:17,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:08:17,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:08:17,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 08:08:17,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:08:17,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 08:08:17,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:08:17,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 08:08:17,636 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:08:17,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:08:17,724 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:08:17,731 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:08:17,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-13 08:08:17,735 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:08:17,736 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:131, output treesize:134 [2021-10-13 08:08:17,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:17,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:08:17,964 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_10| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:08:17,967 INFO L168 Benchmark]: Toolchain (without parser) took 2132.67 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 86.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 45.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:17,968 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory was 53.3 MB in the beginning and 53.2 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:08:17,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.55 ms. Allocated memory is still 113.2 MB. Free memory was 79.8 MB in the beginning and 90.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:17,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.06 ms. Allocated memory is still 113.2 MB. Free memory was 90.1 MB in the beginning and 89.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:17,969 INFO L168 Benchmark]: Boogie Preprocessor took 25.46 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:17,970 INFO L168 Benchmark]: RCFGBuilder took 423.85 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 75.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:17,970 INFO L168 Benchmark]: TraceAbstraction took 1344.72 ms. Allocated memory is still 113.2 MB. Free memory was 74.9 MB in the beginning and 86.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:17,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory was 53.3 MB in the beginning and 53.2 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.55 ms. Allocated memory is still 113.2 MB. Free memory was 79.8 MB in the beginning and 90.1 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.06 ms. Allocated memory is still 113.2 MB. Free memory was 90.1 MB in the beginning and 89.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.46 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 423.85 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 75.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1344.72 ms. Allocated memory is still 113.2 MB. Free memory was 74.9 MB in the beginning and 86.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:08:18,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:08:20,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:08:20,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:08:20,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:08:20,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:08:20,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:08:20,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:08:20,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:08:20,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:08:20,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:08:20,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:08:20,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:08:20,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:08:20,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:08:20,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:08:20,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:08:20,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:08:20,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:08:20,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:08:20,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:08:20,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:08:20,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:08:20,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:08:20,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:08:20,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:08:20,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:08:20,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:08:20,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:08:20,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:08:20,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:08:20,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:08:20,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:08:20,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:08:20,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:08:20,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:08:20,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:08:20,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:08:20,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:08:20,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:08:20,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:08:20,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:08:20,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:08:20,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:08:20,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:08:20,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:08:20,746 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:08:20,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:08:20,747 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:08:20,747 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:08:20,747 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:08:20,748 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:08:20,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:08:20,750 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:08:20,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:08:20,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:08:20,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:08:20,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:08:20,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:08:20,752 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:08:20,752 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:08:20,752 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:08:20,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:08:20,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:08:20,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:08:20,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:08:20,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:08:20,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:08:20,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:08:20,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:08:20,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:08:20,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:08:20,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:08:20,756 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:08:20,756 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:08:20,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:08:20,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:08:20,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:08:20,757 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_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88d908807c562516d59e3074a7f6cea9889fd89a [2021-10-13 08:08:21,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:08:21,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:08:21,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:08:21,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:08:21,189 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:08:21,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-10-13 08:08:21,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data/2bf69b4c2/ff6d805498c9476ca052c37c8fc80ad1/FLAG9589bf53d [2021-10-13 08:08:21,887 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:08:21,888 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-10-13 08:08:21,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data/2bf69b4c2/ff6d805498c9476ca052c37c8fc80ad1/FLAG9589bf53d [2021-10-13 08:08:22,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/data/2bf69b4c2/ff6d805498c9476ca052c37c8fc80ad1 [2021-10-13 08:08:22,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:08:22,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:08:22,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:08:22,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:08:22,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:08:22,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e783dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22, skipping insertion in model container [2021-10-13 08:08:22,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:08:22,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:08:22,442 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2021-10-13 08:08:22,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:08:22,468 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:08:22,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2021-10-13 08:08:22,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:08:22,500 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:08:22,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22 WrapperNode [2021-10-13 08:08:22,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:08:22,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:08:22,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:08:22,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:08:22,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:08:22,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:08:22,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:08:22,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:08:22,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:08:22,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:08:22,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:08:22,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:08:22,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (1/1) ... [2021-10-13 08:08:22,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:08:22,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:08:22,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:08:22,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:08:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:08:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:08:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:08:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:08:23,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:08:23,027 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-13 08:08:23,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:08:23 BoogieIcfgContainer [2021-10-13 08:08:23,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:08:23,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:08:23,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:08:23,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:08:23,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:08:22" (1/3) ... [2021-10-13 08:08:23,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44596613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:08:23, skipping insertion in model container [2021-10-13 08:08:23,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:08:22" (2/3) ... [2021-10-13 08:08:23,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44596613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:08:23, skipping insertion in model container [2021-10-13 08:08:23,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:08:23" (3/3) ... [2021-10-13 08:08:23,054 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2021-10-13 08:08:23,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:08:23,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:08:23,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:08:23,154 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-13 08:08:23,154 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:08:23,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-10-13 08:08:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:08:23,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:23,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:23,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:08:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1296464707, now seen corresponding path program 1 times [2021-10-13 08:08:23,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:08:23,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641792685] [2021-10-13 08:08:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:23,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:08:23,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:08:23,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:08:23,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:08:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:23,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:08:23,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:23,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:08:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:23,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:08:23,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641792685] [2021-10-13 08:08:23,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641792685] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:23,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:23,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:08:23,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926238020] [2021-10-13 08:08:23,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:08:23,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:08:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:08:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:08:23,572 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:23,647 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2021-10-13 08:08:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:08:23,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 08:08:23,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:23,661 INFO L225 Difference]: With dead ends: 52 [2021-10-13 08:08:23,662 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 08:08:23,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:08:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 08:08:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-10-13 08:08:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-13 08:08:23,711 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2021-10-13 08:08:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:23,712 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-13 08:08:23,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:08:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-13 08:08:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 08:08:23,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:23,715 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:23,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:23,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:08:23,928 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:08:23,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:23,935 INFO L82 PathProgramCache]: Analyzing trace with hash -383728831, now seen corresponding path program 1 times [2021-10-13 08:08:23,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:08:23,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923626495] [2021-10-13 08:08:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:23,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:08:23,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:08:23,940 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:08:23,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:08:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:24,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:08:24,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:24,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:08:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:24,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:08:24,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923626495] [2021-10-13 08:08:24,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923626495] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:08:24,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2083352879] [2021-10-13 08:08:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:24,242 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:08:24,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:08:24,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:08:24,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-13 08:08:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:24,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:08:24,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:24,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:08:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:24,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2083352879] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:08:24,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934561524] [2021-10-13 08:08:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:08:24,564 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:08:24,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:08:24,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:08:24,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 08:08:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:08:24,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:08:24,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:24,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:08:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:08:24,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934561524] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:08:24,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 08:08:24,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 6, 6] total 13 [2021-10-13 08:08:24,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679824842] [2021-10-13 08:08:24,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 08:08:24,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:08:24,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 08:08:24,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-13 08:08:24,807 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2021-10-13 08:08:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:25,257 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2021-10-13 08:08:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 08:08:25,258 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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 14 [2021-10-13 08:08:25,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:25,259 INFO L225 Difference]: With dead ends: 67 [2021-10-13 08:08:25,259 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 08:08:25,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 337.4ms TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2021-10-13 08:08:25,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 08:08:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 27. [2021-10-13 08:08:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-10-13 08:08:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-13 08:08:25,271 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2021-10-13 08:08:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:25,272 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-13 08:08:25,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2021-10-13 08:08:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-13 08:08:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:08:25,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:08:25,274 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:08:25,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:25,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:25,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:25,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:08:25,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:08:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:08:25,889 INFO L82 PathProgramCache]: Analyzing trace with hash -359687607, now seen corresponding path program 2 times [2021-10-13 08:08:25,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:08:25,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25062765] [2021-10-13 08:08:25,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 08:08:25,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:08:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:08:25,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:08:25,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:08:25,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 08:08:25,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 08:08:25,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:08:25,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:08:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-13 08:08:26,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:08:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-13 08:08:26,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:08:26,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25062765] [2021-10-13 08:08:26,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25062765] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:08:26,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:08:26,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 08:08:26,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482761080] [2021-10-13 08:08:26,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 08:08:26,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:08:26,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 08:08:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:08:26,292 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-10-13 08:08:26,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:08:26,462 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2021-10-13 08:08:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 08:08:26,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 22 [2021-10-13 08:08:26,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:08:26,464 INFO L225 Difference]: With dead ends: 48 [2021-10-13 08:08:26,464 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:08:26,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 175.6ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:08:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:08:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:08:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-13 08:08:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:08:26,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-13 08:08:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:08:26,466 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:08:26,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-10-13 08:08:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:08:26,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:08:26,469 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:08:26,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:08:26,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:08:26,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:08:26,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:08:26,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:08:26,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:08:26,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:08:26,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:08:26,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:08:26,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:08:27,064 INFO L857 garLoopResultBuilder]: For program point L23-2(line 23) no Hoare annotation was computed. [2021-10-13 08:08:27,065 INFO L853 garLoopResultBuilder]: At program point L23-3(line 23) the Hoare annotation is: (or (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) [2021-10-13 08:08:27,065 INFO L857 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2021-10-13 08:08:27,065 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2021-10-13 08:08:27,065 INFO L853 garLoopResultBuilder]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (and (or (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~v~0 (_ bv0 32))) (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (and (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (exists ((ULTIMATE.start_main_~v~0 (_ BitVec 32))) (and (not (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (= (bvurem ULTIMATE.start_main_~v~0 (_ bv4 32)) ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-10-13 08:08:27,065 INFO L857 garLoopResultBuilder]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2021-10-13 08:08:27,065 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-13 08:08:27,065 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 08:08:27,065 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:08:27,066 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 08:08:27,066 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-13 08:08:27,066 INFO L857 garLoopResultBuilder]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2021-10-13 08:08:27,066 INFO L853 garLoopResultBuilder]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (and (or (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~v~0 (_ bv0 32))) (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (and (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (exists ((ULTIMATE.start_main_~v~0 (_ BitVec 32))) (and (not (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (= (bvurem ULTIMATE.start_main_~v~0 (_ bv4 32)) ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-10-13 08:08:27,066 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:08:27,066 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2021-10-13 08:08:27,066 INFO L853 garLoopResultBuilder]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (and (or (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~v~0 (_ bv0 32))) (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (and (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (exists ((ULTIMATE.start_main_~v~0 (_ BitVec 32))) (and (not (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (= (bvurem ULTIMATE.start_main_~v~0 (_ bv4 32)) ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-10-13 08:08:27,067 INFO L860 garLoopResultBuilder]: At program point L26(lines 12 27) the Hoare annotation is: true [2021-10-13 08:08:27,067 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 25) the Hoare annotation is: (or (and (or (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~v~0 (_ bv0 32))) (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (and (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (exists ((ULTIMATE.start_main_~v~0 (_ BitVec 32))) (and (not (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (= (bvurem ULTIMATE.start_main_~v~0 (_ bv4 32)) ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-10-13 08:08:27,067 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-13 08:08:27,067 INFO L853 garLoopResultBuilder]: At program point L6-2(lines 1 27) the Hoare annotation is: (and (not (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (exists ((ULTIMATE.start_main_~v~0 (_ BitVec 32))) (and (not (bvult ULTIMATE.start_main_~v~0 (_ bv10 32))) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~v~0) (_ bv10 32)) (= (bvurem ULTIMATE.start_main_~v~0 (_ bv4 32)) ULTIMATE.start___VERIFIER_assert_~cond)))) [2021-10-13 08:08:27,071 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:08:27,076 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,077 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,077 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,087 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,088 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,088 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,090 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,090 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,093 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,093 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,098 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,099 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,100 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,100 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,101 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,101 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,101 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,102 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,106 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,109 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,109 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,110 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,110 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,111 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:08:27 BoogieIcfgContainer [2021-10-13 08:08:27,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:08:27,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:08:27,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:08:27,113 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:08:27,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:08:23" (3/4) ... [2021-10-13 08:08:27,117 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:08:27,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 08:08:27,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:08:27,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:08:27,134 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:08:27,184 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(cond == 0bv32) || v == 0bv32) && ~bvult32(v, 10bv32)) || (~bvult32(~bvadd64(4294967295bv32, v), 10bv32) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond)) [2021-10-13 08:08:27,187 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(cond == 0bv32) || v == 0bv32) && ~bvult32(v, 10bv32)) || (~bvult32(~bvadd64(4294967295bv32, v), 10bv32) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond)) [2021-10-13 08:08:27,187 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(cond == 0bv32) || v == 0bv32) && ~bvult32(v, 10bv32)) || (~bvult32(~bvadd64(4294967295bv32, v), 10bv32) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond)) [2021-10-13 08:08:27,187 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(cond == 0bv32) || v == 0bv32) && ~bvult32(v, 10bv32)) || (~bvult32(~bvadd64(4294967295bv32, v), 10bv32) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond)) [2021-10-13 08:08:27,188 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~bvult32(v, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, v), 10bv32)) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond) [2021-10-13 08:08:27,211 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:08:27,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:08:27,219 INFO L168 Benchmark]: Toolchain (without parser) took 4965.39 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 59.5 MB in the beginning and 100.4 MB in the end (delta: -40.9 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:27,223 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 75.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:08:27,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.80 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 76.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:27,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.43 ms. Allocated memory is still 94.4 MB. Free memory was 76.5 MB in the beginning and 78.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:27,227 INFO L168 Benchmark]: Boogie Preprocessor took 26.73 ms. Allocated memory is still 94.4 MB. Free memory was 78.3 MB in the beginning and 77.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:08:27,227 INFO L168 Benchmark]: RCFGBuilder took 411.91 ms. Allocated memory is still 94.4 MB. Free memory was 77.2 MB in the beginning and 66.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:27,228 INFO L168 Benchmark]: TraceAbstraction took 4080.65 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 66.4 MB in the beginning and 53.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:27,228 INFO L168 Benchmark]: Witness Printer took 104.48 ms. Allocated memory is still 119.5 MB. Free memory was 53.5 MB in the beginning and 100.4 MB in the end (delta: -46.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:08:27,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory is still 75.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.80 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 76.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.43 ms. Allocated memory is still 94.4 MB. Free memory was 76.5 MB in the beginning and 78.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.73 ms. Allocated memory is still 94.4 MB. Free memory was 78.3 MB in the beginning and 77.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 411.91 ms. Allocated memory is still 94.4 MB. Free memory was 77.2 MB in the beginning and 66.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4080.65 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 66.4 MB in the beginning and 53.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. * Witness Printer took 104.48 ms. Allocated memory is still 119.5 MB. Free memory was 53.5 MB in the beginning and 100.4 MB in the end (delta: -46.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3934.7ms, OverallIterations: 3, TraceHistogramMax: 6, EmptinessCheckTime: 25.0ms, AutomataDifference: 755.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 393.8ms, InitialAbstractionConstructionTime: 25.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 75 SDtfs, 157 SDslu, 243 SDs, 0 SdLazy, 182 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 219.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 529.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 39.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 32 NumberOfFragments, 176 HoareAnnotationTreeSize, 7 FomulaSimplifications, 499 FormulaSimplificationTreeSizeReduction, 172.5ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 213.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 68.3ms SsaConstructionTime, 109.2ms SatisfiabilityAnalysisTime, 1074.2ms InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 138 ConstructedInterpolants, 1 QuantifiedInterpolants, 340 SizeOfPredicates, 10 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 72/96 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant [2021-10-13 08:08:27,245 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,245 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,246 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,246 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,246 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,246 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] Derived loop invariant: ((!(cond == 0bv32) || v == 0bv32) && ~bvult32(v, 10bv32)) || (~bvult32(~bvadd64(4294967295bv32, v), 10bv32) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond)) - InvariantResult [Line: 1]: Loop Invariant [2021-10-13 08:08:27,247 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,247 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,247 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,248 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,248 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,248 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] Derived loop invariant: (!~bvult32(v, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, v), 10bv32)) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond) - InvariantResult [Line: 20]: Loop Invariant [2021-10-13 08:08:27,249 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,249 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,249 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,250 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,250 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,250 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] Derived loop invariant: ((!(cond == 0bv32) || v == 0bv32) && ~bvult32(v, 10bv32)) || (~bvult32(~bvadd64(4294967295bv32, v), 10bv32) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond)) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ~bvult32(~bvadd64(4294967295bv32, v), 10bv32) || ~bvult32(v, 10bv32) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant [2021-10-13 08:08:27,251 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,251 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,251 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,252 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,252 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,252 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] Derived loop invariant: ((!(cond == 0bv32) || v == 0bv32) && ~bvult32(v, 10bv32)) || (~bvult32(~bvadd64(4294967295bv32, v), 10bv32) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond)) - InvariantResult [Line: 19]: Loop Invariant [2021-10-13 08:08:27,253 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,253 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,253 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,254 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,254 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] [2021-10-13 08:08:27,254 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~v~0,QUANTIFIED] Derived loop invariant: ((!(cond == 0bv32) || v == 0bv32) && ~bvult32(v, 10bv32)) || (~bvult32(~bvadd64(4294967295bv32, v), 10bv32) && (\exists ULTIMATE.start_main_~v~0 : bv32 :: (!~bvult32(ULTIMATE.start_main_~v~0, 10bv32) && ~bvult32(~bvadd64(4294967295bv32, ULTIMATE.start_main_~v~0), 10bv32)) && ~bvurem32(ULTIMATE.start_main_~v~0, 4bv32) == cond)) RESULT: Ultimate proved your program to be correct! [2021-10-13 08:08:27,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f72400-da2a-4ecc-bbc2-525a8f6eed8a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...