./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-025.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:10:56,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:10:56,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:10:56,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:10:56,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:10:56,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:10:56,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:10:56,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:10:56,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:10:56,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:10:56,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:10:56,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:10:56,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:10:56,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:10:56,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:10:56,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:10:56,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:10:56,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:10:56,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:10:56,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:10:56,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:10:56,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:10:56,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:10:56,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:10:56,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:10:56,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:10:56,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:10:56,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:10:56,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:10:56,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:10:56,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:10:56,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:10:56,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:10:56,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:10:56,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:10:56,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:10:56,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:10:56,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:10:56,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:10:56,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:10:56,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:10:56,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:10:56,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:10:56,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:10:56,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:10:56,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:10:56,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:10:56,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:10:56,395 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:10:56,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:10:56,396 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:10:56,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:10:56,397 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:10:56,397 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:10:56,397 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:10:56,398 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:10:56,398 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:10:56,398 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:10:56,398 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:10:56,399 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:10:56,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:10:56,400 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:10:56,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:10:56,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:10:56,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:10:56,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:10:56,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:10:56,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:10:56,401 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:10:56,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:10:56,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:10:56,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:10:56,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:10:56,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:10:56,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:10:56,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:10:56,404 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:10:56,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:10:56,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:10:56,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:10:56,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:10:56,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:10:56,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:10:56,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6695a7a6a6dd8e842be4c135d062342617d8a75bf6d8cfd2fab7ef27361a20a5 [2022-11-16 16:10:56,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:10:56,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:10:56,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:10:56,724 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:10:56,725 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:10:56,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/xcsp/Dubois-025.c [2022-11-16 16:10:56,787 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/data/896ba616b/f0ac333952e54608ab25c2d8055fae82/FLAGe84d126cc [2022-11-16 16:10:57,286 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:10:57,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/sv-benchmarks/c/xcsp/Dubois-025.c [2022-11-16 16:10:57,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/data/896ba616b/f0ac333952e54608ab25c2d8055fae82/FLAGe84d126cc [2022-11-16 16:10:57,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/data/896ba616b/f0ac333952e54608ab25c2d8055fae82 [2022-11-16 16:10:57,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:10:57,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:10:57,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:10:57,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:10:57,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:10:57,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:10:57" (1/1) ... [2022-11-16 16:10:57,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfe654b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:57, skipping insertion in model container [2022-11-16 16:10:57,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:10:57" (1/1) ... [2022-11-16 16:10:57,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:10:57,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:10:57,995 WARN L229 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_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/sv-benchmarks/c/xcsp/Dubois-025.c[17820,17833] [2022-11-16 16:10:58,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:10:58,078 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:10:58,167 WARN L229 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_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/sv-benchmarks/c/xcsp/Dubois-025.c[17820,17833] [2022-11-16 16:10:58,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:10:58,240 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:10:58,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58 WrapperNode [2022-11-16 16:10:58,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:10:58,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:10:58,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:10:58,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:10:58,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:10:58,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:03,865 INFO L138 Inliner]: procedures = 13, calls = 207, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 517 [2022-11-16 16:11:03,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:11:03,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:11:03,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:11:03,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:11:03,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:03,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:05,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:05,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:07,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:07,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:07,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:08,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:09,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:11:09,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:11:09,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:11:09,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:11:09,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (1/1) ... [2022-11-16 16:11:09,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:11:09,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:11:09,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:11:09,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fadf3d9-9c97-4d27-9b57-cd8f7c5fa68e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:11:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:11:09,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:11:09,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:11:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:11:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2022-11-16 16:11:09,393 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2022-11-16 16:11:09,495 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:11:09,497 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:11:16,107 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:11:16,129 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:11:16,129 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:11:16,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:11:16 BoogieIcfgContainer [2022-11-16 16:11:16,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:11:16,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:11:16,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:11:16,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:11:16,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:10:57" (1/3) ... [2022-11-16 16:11:16,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e50b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:11:16, skipping insertion in model container [2022-11-16 16:11:16,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:10:58" (2/3) ... [2022-11-16 16:11:16,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e50b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:11:16, skipping insertion in model container [2022-11-16 16:11:16,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:11:16" (3/3) ... [2022-11-16 16:11:16,145 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-025.c [2022-11-16 16:11:16,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:11:16,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:11:16,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:11:16,231 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c6db329, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:11:16,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:11:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 79 states have internal predecessors, (79), 200 states have call successors, (200), 1 states have call predecessors, (200), 1 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2022-11-16 16:11:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2022-11-16 16:11:16,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:11:16,279 INFO L195 NwaCegarLoop]: trace histogram [200, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:11:16,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:11:16,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:11:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash 987859413, now seen corresponding path program 1 times [2022-11-16 16:11:16,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:11:16,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885718116] [2022-11-16 16:11:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:11:16,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:11:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat