./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-025.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-025.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8 --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 6695a7a6a6dd8e842be4c135d062342617d8a75bf6d8cfd2fab7ef27361a20a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:59:25,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:59:25,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:59:25,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:59:25,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:59:25,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:59:25,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:59:25,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:59:25,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:59:25,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:59:25,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:59:25,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:59:25,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:59:25,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:59:25,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:59:25,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:59:25,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:59:25,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:59:25,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:59:25,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:59:25,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:59:25,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:59:25,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:59:25,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:59:25,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:59:25,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:59:25,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:59:25,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:59:25,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:59:25,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:59:25,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:59:25,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:59:25,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:59:25,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:59:25,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:59:25,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:59:25,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:59:25,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:59:25,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:59:25,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:59:25,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:59:25,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:59:25,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:59:25,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:59:25,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:59:25,906 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:59:25,906 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:59:25,907 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:59:25,907 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:59:25,908 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:59:25,908 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:59:25,909 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:59:25,909 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:59:25,910 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:59:25,910 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:59:25,911 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:59:25,911 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:59:25,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:59:25,913 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:59:25,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:59:25,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:59:25,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:59:25,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:59:25,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:59:25,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:59:25,916 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:59:25,917 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:59:25,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:59:25,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:59:25,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:59:25,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:59:25,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:59:25,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:59:25,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:59:25,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:59:25,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:59:25,921 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:59:25,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:59:25,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:59:25,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:59:25,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:59:25,922 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_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6695a7a6a6dd8e842be4c135d062342617d8a75bf6d8cfd2fab7ef27361a20a5 [2021-11-07 00:59:26,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:59:26,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:59:26,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:59:26,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:59:26,247 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:59:26,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/xcsp/Dubois-025.c [2021-11-07 00:59:26,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data/7cac232d1/992cf74e08d54e13aef41be8c6597544/FLAG9d115a73a [2021-11-07 00:59:27,060 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:59:27,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/sv-benchmarks/c/xcsp/Dubois-025.c [2021-11-07 00:59:27,086 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data/7cac232d1/992cf74e08d54e13aef41be8c6597544/FLAG9d115a73a [2021-11-07 00:59:27,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data/7cac232d1/992cf74e08d54e13aef41be8c6597544 [2021-11-07 00:59:27,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:59:27,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:59:27,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:59:27,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:59:27,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:59:27,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:27" (1/1) ... [2021-11-07 00:59:27,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377ffea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:27, skipping insertion in model container [2021-11-07 00:59:27,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:27" (1/1) ... [2021-11-07 00:59:27,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:59:27,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:59:27,921 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_65eca809-459f-4677-aebc-9acef989cc7f/sv-benchmarks/c/xcsp/Dubois-025.c[17820,17833] [2021-11-07 00:59:27,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:59:27,944 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:59:28,078 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_65eca809-459f-4677-aebc-9acef989cc7f/sv-benchmarks/c/xcsp/Dubois-025.c[17820,17833] [2021-11-07 00:59:28,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:59:28,100 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:59:28,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28 WrapperNode [2021-11-07 00:59:28,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:59:28,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:59:28,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:59:28,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:59:28,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:59:28,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:59:28,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:59:28,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:59:28,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:59:28,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:59:28,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:59:28,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:59:28,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (1/1) ... [2021-11-07 00:59:28,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:59:28,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:59:28,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:59:28,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:59:28,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:59:28,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:59:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:59:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:59:34,621 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:59:34,622 INFO L299 CfgBuilder]: Removed 404 assume(true) statements. [2021-11-07 00:59:34,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:34 BoogieIcfgContainer [2021-11-07 00:59:34,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:59:34,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:59:34,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:59:34,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:59:34,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:59:27" (1/3) ... [2021-11-07 00:59:34,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27381395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:34, skipping insertion in model container [2021-11-07 00:59:34,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:28" (2/3) ... [2021-11-07 00:59:34,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27381395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:34, skipping insertion in model container [2021-11-07 00:59:34,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:34" (3/3) ... [2021-11-07 00:59:34,645 INFO L111 eAbstractionObserver]: Analyzing ICFG Dubois-025.c [2021-11-07 00:59:34,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:59:34,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:59:34,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:59:34,739 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, mAutomataTypeConcurrency=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 [2021-11-07 00:59:34,740 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:59:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-07 00:59:34,764 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:34,765 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-11-07 00:59:34,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:59:34,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash 64611, now seen corresponding path program 1 times [2021-11-07 00:59:34,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:59:34,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683400781] [2021-11-07 00:59:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:34,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:59:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:59:35,313 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 00:59:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:59:35,690 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 00:59:35,694 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 00:59:35,696 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:59:35,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:59:35,705 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 00:59:35,709 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:59:35,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:59:35 BoogieIcfgContainer [2021-11-07 00:59:35,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:59:35,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:59:35,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:59:35,799 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:59:35,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:34" (3/4) ... [2021-11-07 00:59:35,804 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 00:59:35,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:59:35,807 INFO L168 Benchmark]: Toolchain (without parser) took 8482.57 ms. Allocated memory was 83.9 MB in the beginning and 304.1 MB in the end (delta: 220.2 MB). Free memory was 49.3 MB in the beginning and 228.5 MB in the end (delta: -179.2 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2021-11-07 00:59:35,807 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:59:35,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.71 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 49.2 MB in the beginning and 70.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:59:35,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 175.66 ms. Allocated memory is still 115.3 MB. Free memory was 70.3 MB in the beginning and 57.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:59:35,811 INFO L168 Benchmark]: Boogie Preprocessor took 143.63 ms. Allocated memory is still 115.3 MB. Free memory was 57.7 MB in the beginning and 51.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:59:35,812 INFO L168 Benchmark]: RCFGBuilder took 6202.33 ms. Allocated memory was 115.3 MB in the beginning and 209.7 MB in the end (delta: 94.4 MB). Free memory was 51.4 MB in the beginning and 71.9 MB in the end (delta: -20.5 MB). Peak memory consumption was 89.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:59:35,813 INFO L168 Benchmark]: TraceAbstraction took 1166.65 ms. Allocated memory was 209.7 MB in the beginning and 304.1 MB in the end (delta: 94.4 MB). Free memory was 71.9 MB in the beginning and 228.5 MB in the end (delta: -156.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:59:35,814 INFO L168 Benchmark]: Witness Printer took 5.75 ms. Allocated memory is still 304.1 MB. Free memory is still 228.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:59:35,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory is still 39.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 774.71 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 49.2 MB in the beginning and 70.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 175.66 ms. Allocated memory is still 115.3 MB. Free memory was 70.3 MB in the beginning and 57.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 143.63 ms. Allocated memory is still 115.3 MB. Free memory was 57.7 MB in the beginning and 51.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6202.33 ms. Allocated memory was 115.3 MB in the beginning and 209.7 MB in the end (delta: 94.4 MB). Free memory was 51.4 MB in the beginning and 71.9 MB in the end (delta: -20.5 MB). Peak memory consumption was 89.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1166.65 ms. Allocated memory was 209.7 MB in the beginning and 304.1 MB in the end (delta: 94.4 MB). Free memory was 71.9 MB in the beginning and 228.5 MB in the end (delta: -156.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.75 ms. Allocated memory is still 304.1 MB. Free memory is still 228.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 526]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 326. Possible FailurePath: [L22] int cond0; [L23] int dummy = 0; [L24] int N; [L25] int var0; [L26] var0 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L29] int var1; [L30] var1 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L33] int var2; [L34] var2 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L37] int var3; [L38] var3 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L41] int var4; [L42] var4 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L45] int var5; [L46] var5 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L49] int var6; [L50] var6 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L53] int var7; [L54] var7 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L57] int var8; [L58] var8 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L61] int var9; [L62] var9 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L65] int var10; [L66] var10 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L69] int var11; [L70] var11 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L73] int var12; [L74] var12 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L77] int var13; [L78] var13 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L81] int var14; [L82] var14 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L85] int var15; [L86] var15 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L89] int var16; [L90] var16 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L93] int var17; [L94] var17 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L97] int var18; [L98] var18 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L101] int var19; [L102] var19 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L105] int var20; [L106] var20 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L109] int var21; [L110] var21 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L113] int var22; [L114] var22 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L117] int var23; [L118] var23 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L121] int var24; [L122] var24 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L125] int var25; [L126] var25 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L129] int var26; [L130] var26 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L133] int var27; [L134] var27 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L137] int var28; [L138] var28 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L141] int var29; [L142] var29 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L145] int var30; [L146] var30 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L149] int var31; [L150] var31 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L153] int var32; [L154] var32 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L157] int var33; [L158] var33 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L161] int var34; [L162] var34 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L165] int var35; [L166] var35 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L169] int var36; [L170] var36 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L173] int var37; [L174] var37 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L177] int var38; [L178] var38 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L181] int var39; [L182] var39 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L185] int var40; [L186] var40 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L189] int var41; [L190] var41 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L193] int var42; [L194] var42 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L197] int var43; [L198] var43 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L201] int var44; [L202] var44 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L205] int var45; [L206] var45 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L209] int var46; [L210] var46 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L213] int var47; [L214] var47 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L217] int var48; [L218] var48 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L221] int var49; [L222] var49 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L225] int var50; [L226] var50 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L229] int var51; [L230] var51 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L233] int var52; [L234] var52 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L237] int var53; [L238] var53 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L241] int var54; [L242] var54 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L245] int var55; [L246] var55 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L249] int var56; [L250] var56 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L253] int var57; [L254] var57 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L257] int var58; [L258] var58 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L261] int var59; [L262] var59 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L265] int var60; [L266] var60 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L269] int var61; [L270] var61 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L273] int var62; [L274] var62 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L277] int var63; [L278] var63 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L281] int var64; [L282] var64 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L285] int var65; [L286] var65 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L289] int var66; [L290] var66 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L293] int var67; [L294] var67 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L297] int var68; [L298] var68 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L301] int var69; [L302] var69 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L305] int var70; [L306] var70 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L309] int var71; [L310] var71 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L313] int var72; [L314] var72 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L317] int var73; [L318] var73 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L321] int var74; [L322] var74 = __VERIFIER_nondet_int() [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L325] int myvar0 = 1; [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L18] COND FALSE !(!cond) [L526] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 00:59:35,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-025.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8 --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 6695a7a6a6dd8e842be4c135d062342617d8a75bf6d8cfd2fab7ef27361a20a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:59:38,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:59:38,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:59:38,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:59:38,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:59:38,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:59:38,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:59:38,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:59:38,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:59:38,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:59:38,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:59:38,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:59:38,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:59:38,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:59:38,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:59:38,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:59:38,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:59:38,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:59:38,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:59:39,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:59:39,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:59:39,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:59:39,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:59:39,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:59:39,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:59:39,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:59:39,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:59:39,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:59:39,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:59:39,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:59:39,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:59:39,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:59:39,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:59:39,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:59:39,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:59:39,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:59:39,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:59:39,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:59:39,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:59:39,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:59:39,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:59:39,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:59:39,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:59:39,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:59:39,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:59:39,111 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:59:39,111 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:59:39,111 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:59:39,112 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:59:39,112 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:59:39,112 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:59:39,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:59:39,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:59:39,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:59:39,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:59:39,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:59:39,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:59:39,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:59:39,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:59:39,118 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:59:39,118 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:59:39,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:59:39,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:59:39,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:59:39,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:59:39,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:59:39,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:59:39,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:59:39,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:59:39,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:59:39,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:59:39,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:59:39,121 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:59:39,122 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:39,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:59:39,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:59:39,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:59:39,123 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_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6695a7a6a6dd8e842be4c135d062342617d8a75bf6d8cfd2fab7ef27361a20a5 [2021-11-07 00:59:39,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:59:39,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:59:39,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:59:39,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:59:39,632 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:59:39,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/xcsp/Dubois-025.c [2021-11-07 00:59:39,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data/d228ac930/e9db96fe88d742918ef4ce3ad17fe7f8/FLAG55e663474 [2021-11-07 00:59:40,450 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:59:40,452 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/sv-benchmarks/c/xcsp/Dubois-025.c [2021-11-07 00:59:40,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data/d228ac930/e9db96fe88d742918ef4ce3ad17fe7f8/FLAG55e663474 [2021-11-07 00:59:40,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/data/d228ac930/e9db96fe88d742918ef4ce3ad17fe7f8 [2021-11-07 00:59:40,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:59:40,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:59:40,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:59:40,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:59:40,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:59:40,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:40" (1/1) ... [2021-11-07 00:59:40,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c7108a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:40, skipping insertion in model container [2021-11-07 00:59:40,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:40" (1/1) ... [2021-11-07 00:59:40,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:59:40,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:59:41,358 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_65eca809-459f-4677-aebc-9acef989cc7f/sv-benchmarks/c/xcsp/Dubois-025.c[17820,17833] [2021-11-07 00:59:41,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:59:41,386 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:59:41,588 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_65eca809-459f-4677-aebc-9acef989cc7f/sv-benchmarks/c/xcsp/Dubois-025.c[17820,17833] [2021-11-07 00:59:41,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:59:41,614 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:59:41,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41 WrapperNode [2021-11-07 00:59:41,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:59:41,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:59:41,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:59:41,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:59:41,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:41,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:41,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:59:41,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:59:41,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:59:41,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:59:41,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:41,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:41,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:41,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:41,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:41,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:42,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:42,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:59:42,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:59:42,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:59:42,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:59:42,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 00:59:42,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:59:42,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:59:42,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:59:42,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:59:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:59:42,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:59:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:59:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:59:43,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:59:43,984 INFO L299 CfgBuilder]: Removed 404 assume(true) statements. [2021-11-07 00:59:43,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:43 BoogieIcfgContainer [2021-11-07 00:59:43,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:59:43,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:59:43,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:59:43,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:59:44,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:59:40" (1/3) ... [2021-11-07 00:59:44,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:44, skipping insertion in model container [2021-11-07 00:59:44,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (2/3) ... [2021-11-07 00:59:44,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:44, skipping insertion in model container [2021-11-07 00:59:44,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:43" (3/3) ... [2021-11-07 00:59:44,004 INFO L111 eAbstractionObserver]: Analyzing ICFG Dubois-025.c [2021-11-07 00:59:44,011 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:59:44,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:59:44,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:59:44,087 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, mAutomataTypeConcurrency=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 [2021-11-07 00:59:44,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:59:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 406 states, 404 states have (on average 1.4975247524752475) internal successors, (605), 405 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-07 00:59:44,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:44,163 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:44,164 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:59:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:44,172 INFO L85 PathProgramCache]: Analyzing trace with hash -367461647, now seen corresponding path program 1 times [2021-11-07 00:59:44,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:44,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757707126] [2021-11-07 00:59:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:44,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:44,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:44,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:59:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:44,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:59:44,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:46,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:46,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:46,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757707126] [2021-11-07 00:59:46,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757707126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:46,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:46,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:59:46,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490259670] [2021-11-07 00:59:46,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:59:46,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:59:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:59:47,004 INFO L87 Difference]: Start difference. First operand has 406 states, 404 states have (on average 1.4975247524752475) internal successors, (605), 405 states have internal predecessors, (605), 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 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:47,088 INFO L93 Difference]: Finished difference Result 806 states and 1204 transitions. [2021-11-07 00:59:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:59:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 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 402 [2021-11-07 00:59:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:47,120 INFO L225 Difference]: With dead ends: 806 [2021-11-07 00:59:47,120 INFO L226 Difference]: Without dead ends: 403 [2021-11-07 00:59:47,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:59:47,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-07 00:59:47,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-11-07 00:59:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.0) internal successors, (402), 402 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 402 transitions. [2021-11-07 00:59:47,201 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 402 transitions. Word has length 402 [2021-11-07 00:59:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:47,202 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 402 transitions. [2021-11-07 00:59:47,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 201.0) internal successors, (402), 2 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 402 transitions. [2021-11-07 00:59:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-07 00:59:47,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:47,231 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:47,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:47,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:47,451 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:59:47,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash -925244205, now seen corresponding path program 1 times [2021-11-07 00:59:47,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:47,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215929850] [2021-11-07 00:59:47,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:47,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:47,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:47,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65eca809-459f-4677-aebc-9acef989cc7f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:01:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:03,897 WARN L261 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-07 01:01:03,945 INFO L286 TraceCheckSpWp]: Computing forward predicates...