./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur --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 89dff477769dad0aa6457e2937a274d22cdfac537ecc3260d5e7568cec79996c --- 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-38b53e6 [2022-11-25 23:21:00,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:21:00,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:21:00,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:21:00,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:21:00,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:21:00,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:21:00,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:21:00,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:21:00,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:21:00,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:21:00,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:21:00,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:21:00,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:21:00,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:21:00,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:21:00,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:21:00,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:21:00,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:21:00,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:21:00,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:21:00,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:21:00,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:21:00,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:21:00,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:21:00,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:21:00,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:21:00,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:21:00,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:21:00,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:21:00,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:21:00,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:21:00,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:21:00,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:21:00,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:21:00,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:21:00,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:21:00,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:21:00,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:21:00,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:21:00,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:21:00,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:21:00,339 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:21:00,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:21:00,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:21:00,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:21:00,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:21:00,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:21:00,341 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:21:00,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:21:00,342 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:21:00,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:21:00,343 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:21:00,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:21:00,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:21:00,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:21:00,344 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:21:00,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:21:00,344 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:21:00,344 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:21:00,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:21:00,345 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:21:00,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:21:00,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:21:00,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:21:00,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:21:00,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:21:00,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:21:00,347 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:21:00,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:21:00,347 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:21:00,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:21:00,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:21:00,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:21:00,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:00,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:21:00,348 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:21:00,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:21:00,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:21:00,349 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:21:00,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:21:00,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:21:00,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:21:00,350 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_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89dff477769dad0aa6457e2937a274d22cdfac537ecc3260d5e7568cec79996c [2022-11-25 23:21:00,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:21:00,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:21:00,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:21:00,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:21:00,671 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:21:00,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2022-11-25 23:21:03,743 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:21:03,987 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:21:03,987 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2022-11-25 23:21:03,993 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/data/4840fda2b/9d3e6e762ed64290afbacd2a879fd3d4/FLAGd7f0ff39d [2022-11-25 23:21:04,016 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/data/4840fda2b/9d3e6e762ed64290afbacd2a879fd3d4 [2022-11-25 23:21:04,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:21:04,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:21:04,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:04,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:21:04,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:21:04,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8a5571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04, skipping insertion in model container [2022-11-25 23:21:04,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:21:04,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:21:04,205 WARN L237 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_c379522e-1f31-483d-8409-8a2dbeae3556/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c[986,999] [2022-11-25 23:21:04,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:04,223 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:21:04,241 WARN L237 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_c379522e-1f31-483d-8409-8a2dbeae3556/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c[986,999] [2022-11-25 23:21:04,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:04,254 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:21:04,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04 WrapperNode [2022-11-25 23:21:04,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:04,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:04,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:21:04,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:21:04,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,289 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-11-25 23:21:04,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:04,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:21:04,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:21:04,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:21:04,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,308 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:21:04,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:21:04,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:21:04,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:21:04,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (1/1) ... [2022-11-25 23:21:04,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:04,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:04,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:21:04,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:21:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:21:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:21:04,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:21:04,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:21:04,450 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:21:04,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:21:04,546 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:21:04,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:21:04,562 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:21:04,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:04 BoogieIcfgContainer [2022-11-25 23:21:04,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:21:04,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:21:04,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:21:04,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:21:04,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:21:04" (1/3) ... [2022-11-25 23:21:04,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8767cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:04, skipping insertion in model container [2022-11-25 23:21:04,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:04" (2/3) ... [2022-11-25 23:21:04,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8767cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:04, skipping insertion in model container [2022-11-25 23:21:04,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:04" (3/3) ... [2022-11-25 23:21:04,575 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2022-11-25 23:21:04,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:21:04,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:21:04,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:21:04,655 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;@78c32653, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:21:04,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:21:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:21:04,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:04,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:21:04,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:04,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1724589170, now seen corresponding path program 1 times [2022-11-25 23:21:04,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:04,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680776862] [2022-11-25 23:21:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:04,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:04,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:04,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680776862] [2022-11-25 23:21:04,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680776862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:21:04,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:21:04,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:21:04,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136500533] [2022-11-25 23:21:04,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:21:04,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:21:04,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:04,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:21:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:21:04,972 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:05,003 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2022-11-25 23:21:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:21:05,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:21:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:05,014 INFO L225 Difference]: With dead ends: 17 [2022-11-25 23:21:05,014 INFO L226 Difference]: Without dead ends: 8 [2022-11-25 23:21:05,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:21:05,021 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:05,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:21:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-25 23:21:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-25 23:21:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-25 23:21:05,056 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-25 23:21:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:05,057 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-25 23:21:05,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-25 23:21:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:21:05,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:05,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:21:05,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:21:05,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1922594244, now seen corresponding path program 1 times [2022-11-25 23:21:05,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:05,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805940091] [2022-11-25 23:21:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:05,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:05,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805940091] [2022-11-25 23:21:05,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805940091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:21:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972748521] [2022-11-25 23:21:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:05,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:05,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:05,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:21:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:05,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 23:21:05,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:05,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:05,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972748521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:05,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1930925210] [2022-11-25 23:21:05,617 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-25 23:21:05,617 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:21:05,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:21:05,628 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:21:05,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:21:05,825 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:06,042 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '91#(and (= (ite (< 0 |ULTIMATE.start_main_~main__y~0#1|) 1 0) |ULTIMATE.start_main_~__tmp_1~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| |ULTIMATE.start_main_~__tmp_1~0#1|) (not (< |ULTIMATE.start_main_~main__x~0#1| 0)) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~main__y~0#1| 1000)) (= |#NULL.offset| 0) (= ~__return_65~0 0) (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2022-11-25 23:21:06,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:21:06,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:06,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-25 23:21:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277006653] [2022-11-25 23:21:06,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:06,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:21:06,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:06,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:21:06,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:21:06,046 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:06,090 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2022-11-25 23:21:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:21:06,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 23:21:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:06,091 INFO L225 Difference]: With dead ends: 10 [2022-11-25 23:21:06,091 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:21:06,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:21:06,093 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:06,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:21:06,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:21:06,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:21:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:21:06,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-11-25 23:21:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:06,096 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:21:06,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:21:06,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:21:06,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:21:06,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:21:06,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:06,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 23:21:06,325 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 23:21:06,326 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 58) no Hoare annotation was computed. [2022-11-25 23:21:06,326 INFO L902 garLoopResultBuilder]: At program point L54(lines 13 60) the Hoare annotation is: true [2022-11-25 23:21:06,326 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 59) no Hoare annotation was computed. [2022-11-25 23:21:06,326 INFO L899 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2022-11-25 23:21:06,327 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 55) no Hoare annotation was computed. [2022-11-25 23:21:06,327 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 23:21:06,328 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2022-11-25 23:21:06,329 INFO L895 garLoopResultBuilder]: At program point L37(lines 30 58) the Hoare annotation is: (or (< 0 |ULTIMATE.start_main_~main__y~0#1|) (< |ULTIMATE.start_main_~main__x~0#1| 0)) [2022-11-25 23:21:06,336 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 23:21:06,338 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:21:06,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:21:06 BoogieIcfgContainer [2022-11-25 23:21:06,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:21:06,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:21:06,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:21:06,354 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:21:06,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:04" (3/4) ... [2022-11-25 23:21:06,357 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:21:06,367 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-25 23:21:06,367 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-25 23:21:06,368 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 23:21:06,368 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:21:06,405 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:21:06,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:21:06,406 INFO L158 Benchmark]: Toolchain (without parser) took 2383.53ms. Allocated memory is still 148.9MB. Free memory was 119.8MB in the beginning and 68.2MB in the end (delta: 51.6MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2022-11-25 23:21:06,406 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory was 64.0MB in the beginning and 63.8MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:21:06,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.05ms. Allocated memory is still 148.9MB. Free memory was 119.8MB in the beginning and 109.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:21:06,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.39ms. Allocated memory is still 148.9MB. Free memory was 109.3MB in the beginning and 107.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:21:06,408 INFO L158 Benchmark]: Boogie Preprocessor took 19.60ms. Allocated memory is still 148.9MB. Free memory was 107.9MB in the beginning and 106.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:21:06,408 INFO L158 Benchmark]: RCFGBuilder took 253.62ms. Allocated memory is still 148.9MB. Free memory was 106.7MB in the beginning and 97.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 23:21:06,408 INFO L158 Benchmark]: TraceAbstraction took 1784.93ms. Allocated memory is still 148.9MB. Free memory was 96.3MB in the beginning and 70.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2022-11-25 23:21:06,409 INFO L158 Benchmark]: Witness Printer took 52.20ms. Allocated memory is still 148.9MB. Free memory was 70.3MB in the beginning and 68.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:21:06,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory was 64.0MB in the beginning and 63.8MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.05ms. Allocated memory is still 148.9MB. Free memory was 119.8MB in the beginning and 109.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.39ms. Allocated memory is still 148.9MB. Free memory was 109.3MB in the beginning and 107.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.60ms. Allocated memory is still 148.9MB. Free memory was 107.9MB in the beginning and 106.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 253.62ms. Allocated memory is still 148.9MB. Free memory was 106.7MB in the beginning and 97.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1784.93ms. Allocated memory is still 148.9MB. Free memory was 96.3MB in the beginning and 70.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * Witness Printer took 52.20ms. Allocated memory is still 148.9MB. Free memory was 70.3MB in the beginning and 68.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 10 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 SizeOfPredicates, 4 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 < main__y || main__x < 0 RESULT: Ultimate proved your program to be correct! [2022-11-25 23:21:06,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c379522e-1f31-483d-8409-8a2dbeae3556/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE