./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG --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 e29f062842798044f4f77e299bc6043cf6e874a22c0b9b512a8e0e54ddd042d9 ............................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG --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 e29f062842798044f4f77e299bc6043cf6e874a22c0b9b512a8e0e54ddd042d9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:08:01,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:01,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:01,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:01,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:01,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:01,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:01,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:01,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:01,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:01,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:01,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:01,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:01,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:01,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:01,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:01,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:01,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:01,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:01,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:01,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:01,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:01,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:01,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:01,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:01,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:01,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:01,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:01,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:01,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:01,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:01,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:01,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:01,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:01,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:01,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:01,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:01,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:01,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:01,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:01,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:01,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:08:01,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:01,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:01,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:01,383 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:01,383 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:01,384 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:01,384 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:08:01,384 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:01,384 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:01,384 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:08:01,392 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:08:01,392 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:01,392 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:08:01,393 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:08:01,393 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:08:01,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:01,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:01,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:08:01,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:01,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:01,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:01,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:01,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:01,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:01,396 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:01,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:01,397 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:01,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:01,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:01,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:01,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:01,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:01,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:01,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:01,400 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:08:01,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:08:01,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:01,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:01,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:01,402 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_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29f062842798044f4f77e299bc6043cf6e874a22c0b9b512a8e0e54ddd042d9 [2021-10-29 05:08:01,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:01,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:01,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:01,783 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:01,783 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:01,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-10-29 05:08:01,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data/ba8c6cd9e/870fcfefedd44efd9884f2d9704cea0f/FLAG144efc42d [2021-10-29 05:08:02,462 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:08:02,465 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-10-29 05:08:02,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data/ba8c6cd9e/870fcfefedd44efd9884f2d9704cea0f/FLAG144efc42d [2021-10-29 05:08:02,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data/ba8c6cd9e/870fcfefedd44efd9884f2d9704cea0f [2021-10-29 05:08:02,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:08:02,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:08:02,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:02,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:08:02,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:08:02,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:02" (1/1) ... [2021-10-29 05:08:02,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab74a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:02, skipping insertion in model container [2021-10-29 05:08:02,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:02" (1/1) ... [2021-10-29 05:08:02,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:08:02,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:08:03,048 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_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-10-29 05:08:03,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:03,060 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:08:03,084 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_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-10-29 05:08:03,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:03,098 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:08:03,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03 WrapperNode [2021-10-29 05:08:03,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:03,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:03,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:08:03,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:08:03,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:03,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:08:03,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:08:03,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:08:03,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:08:03,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:08:03,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:08:03,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:08:03,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (1/1) ... [2021-10-29 05:08:03,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:03,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:03,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:08:03,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-29 05:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:08:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:08:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:08:03,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:08:03,994 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-29 05:08:03,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:03 BoogieIcfgContainer [2021-10-29 05:08:03,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:08:03,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:08:03,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:08:04,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:08:04,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:08:02" (1/3) ... [2021-10-29 05:08:04,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728a7311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:04, skipping insertion in model container [2021-10-29 05:08:04,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:03" (2/3) ... [2021-10-29 05:08:04,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728a7311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:04, skipping insertion in model container [2021-10-29 05:08:04,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:03" (3/3) ... [2021-10-29 05:08:04,005 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-10-29 05:08:04,011 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:08:04,011 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:08:04,068 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:08:04,075 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 [2021-10-29 05:08:04,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:08:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:08:04,094 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:04,095 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:04,095 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1433219361, now seen corresponding path program 1 times [2021-10-29 05:08:04,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:04,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985430987] [2021-10-29 05:08:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:04,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:04,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:08:04,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985430987] [2021-10-29 05:08:04,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985430987] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:04,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:04,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:08:04,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567379397] [2021-10-29 05:08:04,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:08:04,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:08:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:08:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:08:04,309 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:04,342 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-10-29 05:08:04,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:08:04,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:08:04,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:04,353 INFO L225 Difference]: With dead ends: 35 [2021-10-29 05:08:04,354 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 05:08:04,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:08:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 05:08:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-29 05:08:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-29 05:08:04,392 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2021-10-29 05:08:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:04,393 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-29 05:08:04,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:04,394 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-29 05:08:04,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:08:04,395 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:04,395 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:04,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:08:04,396 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2131701560, now seen corresponding path program 1 times [2021-10-29 05:08:04,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:04,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438357500] [2021-10-29 05:08:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:04,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:04,480 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:08:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:04,545 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:08:04,545 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:08:04,547 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:08:04,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:08:04,553 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:08:04,557 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:08:04,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:08:04 BoogieIcfgContainer [2021-10-29 05:08:04,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:08:04,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:08:04,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:08:04,584 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:08:04,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:03" (3/4) ... [2021-10-29 05:08:04,588 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:08:04,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:08:04,590 INFO L168 Benchmark]: Toolchain (without parser) took 1769.90 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 67.1 MB in the beginning and 109.4 MB in the end (delta: -42.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:04,591 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory was 83.5 MB in the beginning and 83.4 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:04,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.14 ms. Allocated memory is still 104.9 MB. Free memory was 66.9 MB in the beginning and 78.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:04,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.50 ms. Allocated memory is still 104.9 MB. Free memory was 78.3 MB in the beginning and 76.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:04,603 INFO L168 Benchmark]: Boogie Preprocessor took 49.20 ms. Allocated memory is still 104.9 MB. Free memory was 76.5 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:04,604 INFO L168 Benchmark]: RCFGBuilder took 805.08 ms. Allocated memory is still 104.9 MB. Free memory was 75.1 MB in the beginning and 51.4 MB in the end (delta: 23.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:04,605 INFO L168 Benchmark]: TraceAbstraction took 584.54 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 50.7 MB in the beginning and 109.4 MB in the end (delta: -58.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:04,605 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 144.7 MB. Free memory is still 109.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:04,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory was 83.5 MB in the beginning and 83.4 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.14 ms. Allocated memory is still 104.9 MB. Free memory was 66.9 MB in the beginning and 78.3 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.50 ms. Allocated memory is still 104.9 MB. Free memory was 78.3 MB in the beginning and 76.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.20 ms. Allocated memory is still 104.9 MB. Free memory was 76.5 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 805.08 ms. Allocated memory is still 104.9 MB. Free memory was 75.1 MB in the beginning and 51.4 MB in the end (delta: 23.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 584.54 ms. Allocated memory was 104.9 MB in the beginning and 144.7 MB in the end (delta: 39.8 MB). Free memory was 50.7 MB in the beginning and 109.4 MB in the end (delta: -58.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.96 ms. Allocated memory is still 144.7 MB. Free memory is still 109.4 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: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-10-29 05:08:04,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:08:07,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:07,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:07,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:07,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:07,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:07,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:07,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:07,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:07,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:07,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:07,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:07,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:07,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:07,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:07,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:07,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:07,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:07,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:07,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:07,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:07,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:07,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:07,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:07,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:07,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:07,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:07,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:07,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:07,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:07,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:07,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:07,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:07,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:07,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:07,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:07,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:07,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:07,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:07,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:07,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:07,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:08:07,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:07,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:07,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:07,521 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:07,522 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:07,522 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:07,522 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:07,522 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:07,523 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:07,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:07,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:07,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:07,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:07,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:07,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:07,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:07,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:07,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:08:07,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:08:07,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:07,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:07,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:07,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:07,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:07,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:08:07,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:07,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:07,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:07,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:07,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:07,531 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:08:07,532 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:08:07,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:07,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:07,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:07,533 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_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29f062842798044f4f77e299bc6043cf6e874a22c0b9b512a8e0e54ddd042d9 [2021-10-29 05:08:07,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:07,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:07,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:07,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:07,982 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:07,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-10-29 05:08:08,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data/fea435769/57a9e51be5f145f8a96137ef25e8a084/FLAG5435315cf [2021-10-29 05:08:08,661 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:08:08,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-10-29 05:08:08,679 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data/fea435769/57a9e51be5f145f8a96137ef25e8a084/FLAG5435315cf [2021-10-29 05:08:09,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/data/fea435769/57a9e51be5f145f8a96137ef25e8a084 [2021-10-29 05:08:09,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:08:09,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:08:09,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:09,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:08:09,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:08:09,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146e8940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09, skipping insertion in model container [2021-10-29 05:08:09,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:08:09,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:08:09,236 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_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-10-29 05:08:09,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:09,253 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:08:09,287 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_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-10-29 05:08:09,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:09,326 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:08:09,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09 WrapperNode [2021-10-29 05:08:09,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:09,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:09,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:08:09,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:08:09,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:09,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:08:09,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:08:09,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:08:09,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:08:09,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:08:09,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:08:09,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:08:09,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (1/1) ... [2021-10-29 05:08:09,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:09,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:09,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:08:09,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:08:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-29 05:08:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:08:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:08:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:08:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:08:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:08:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:08:10,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:08:10,012 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-29 05:08:10,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:10 BoogieIcfgContainer [2021-10-29 05:08:10,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:08:10,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:08:10,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:08:10,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:08:10,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:08:09" (1/3) ... [2021-10-29 05:08:10,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b6a5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:10, skipping insertion in model container [2021-10-29 05:08:10,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:09" (2/3) ... [2021-10-29 05:08:10,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b6a5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:10, skipping insertion in model container [2021-10-29 05:08:10,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:10" (3/3) ... [2021-10-29 05:08:10,038 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-10-29 05:08:10,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:08:10,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:08:10,131 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:08:10,140 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 [2021-10-29 05:08:10,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:08:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:08:10,180 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:10,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:10,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:10,190 INFO L85 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-29 05:08:10,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:10,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803281567] [2021-10-29 05:08:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:10,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:10,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:10,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:08:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:10,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:08:10,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:10,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:10,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:10,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803281567] [2021-10-29 05:08:10,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803281567] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:10,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:10,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:08:10,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041066231] [2021-10-29 05:08:10,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:08:10,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:08:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:08:10,559 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:10,583 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-29 05:08:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:08:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:08:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:10,595 INFO L225 Difference]: With dead ends: 62 [2021-10-29 05:08:10,596 INFO L226 Difference]: Without dead ends: 29 [2021-10-29 05:08:10,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:08:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-29 05:08:10,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-29 05:08:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-29 05:08:10,646 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-29 05:08:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:10,648 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-29 05:08:10,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:10,648 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-29 05:08:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:08:10,650 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:10,650 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:10,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:10,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:10,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:10,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-29 05:08:10,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:10,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911332129] [2021-10-29 05:08:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:10,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:10,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:10,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:10,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:08:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:10,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:08:10,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:11,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:11,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:11,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911332129] [2021-10-29 05:08:11,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911332129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:11,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:11,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:08:11,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398037632] [2021-10-29 05:08:11,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:08:11,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:11,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:08:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:08:11,166 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-10-29 05:08:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:11,301 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-10-29 05:08:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:08:11,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 11 [2021-10-29 05:08:11,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:11,306 INFO L225 Difference]: With dead ends: 68 [2021-10-29 05:08:11,306 INFO L226 Difference]: Without dead ends: 59 [2021-10-29 05:08:11,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:08:11,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-29 05:08:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2021-10-29 05:08:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-29 05:08:11,327 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-29 05:08:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:11,328 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-29 05:08:11,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-10-29 05:08:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-29 05:08:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:08:11,332 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:11,332 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:11,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:11,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:11,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-10-29 05:08:11,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:11,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578191650] [2021-10-29 05:08:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:11,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:11,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:11,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:11,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:08:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:11,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:08:11,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:11,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:12,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:12,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578191650] [2021-10-29 05:08:12,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578191650] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:12,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:12,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:08:12,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258660167] [2021-10-29 05:08:12,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:08:12,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:12,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:08:12,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:08:12,046 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:12,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:12,160 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-10-29 05:08:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:08:12,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:08:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:12,164 INFO L225 Difference]: With dead ends: 52 [2021-10-29 05:08:12,164 INFO L226 Difference]: Without dead ends: 28 [2021-10-29 05:08:12,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:08:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-29 05:08:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-29 05:08:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-10-29 05:08:12,169 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2021-10-29 05:08:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:12,169 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-10-29 05:08:12,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:12,169 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-10-29 05:08:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:08:12,170 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:12,170 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:12,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:12,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:12,371 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:12,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:12,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-10-29 05:08:12,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:12,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693310118] [2021-10-29 05:08:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:12,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:12,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:12,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:12,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:08:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:12,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:08:12,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:12,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:12,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:12,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693310118] [2021-10-29 05:08:12,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693310118] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:12,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:12,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:08:12,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088966072] [2021-10-29 05:08:12,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:08:12,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:12,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:08:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:08:12,605 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:12,681 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2021-10-29 05:08:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:08:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 05:08:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:12,683 INFO L225 Difference]: With dead ends: 65 [2021-10-29 05:08:12,684 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 05:08:12,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:08:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 05:08:12,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2021-10-29 05:08:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-10-29 05:08:12,691 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2021-10-29 05:08:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:12,691 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-10-29 05:08:12,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:12,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-10-29 05:08:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:08:12,693 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:12,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:12,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:12,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:12,914 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:12,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:12,915 INFO L85 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-10-29 05:08:12,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:12,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382161218] [2021-10-29 05:08:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:12,916 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:12,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:12,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:12,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:08:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:13,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:08:13,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:13,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:13,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:13,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382161218] [2021-10-29 05:08:13,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382161218] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:13,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:13,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:08:13,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216104567] [2021-10-29 05:08:13,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:08:13,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:13,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:08:13,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:08:13,448 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:13,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:13,463 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2021-10-29 05:08:13,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:08:13,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:08:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:13,464 INFO L225 Difference]: With dead ends: 40 [2021-10-29 05:08:13,465 INFO L226 Difference]: Without dead ends: 30 [2021-10-29 05:08:13,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:08:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-29 05:08:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-29 05:08:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-10-29 05:08:13,470 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2021-10-29 05:08:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:13,470 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-10-29 05:08:13,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-10-29 05:08:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:08:13,471 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:13,472 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:13,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:13,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:13,680 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:13,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-10-29 05:08:13,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:13,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652117092] [2021-10-29 05:08:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:13,682 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:13,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:13,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:13,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:08:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:13,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 05:08:13,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:13,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:14,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:14,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652117092] [2021-10-29 05:08:14,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652117092] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:14,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:14,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-29 05:08:14,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62253206] [2021-10-29 05:08:14,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:08:14,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:14,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:08:14,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:08:14,021 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:14,129 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-10-29 05:08:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:08:14,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 18 [2021-10-29 05:08:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:14,130 INFO L225 Difference]: With dead ends: 42 [2021-10-29 05:08:14,130 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 05:08:14,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:08:14,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 05:08:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-10-29 05:08:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-10-29 05:08:14,135 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2021-10-29 05:08:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:14,136 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-10-29 05:08:14,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-10-29 05:08:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 05:08:14,137 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:14,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:14,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:14,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:14,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:14,345 INFO L85 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2021-10-29 05:08:14,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:14,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424703647] [2021-10-29 05:08:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:14,346 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:14,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:14,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:14,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:08:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:14,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:08:14,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:14,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:08:14,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:14,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424703647] [2021-10-29 05:08:14,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424703647] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:14,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:14,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 05:08:14,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913227850] [2021-10-29 05:08:14,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:08:14,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:14,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:08:14,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:08:14,866 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:14,955 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-10-29 05:08:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:08:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 05:08:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:14,958 INFO L225 Difference]: With dead ends: 45 [2021-10-29 05:08:14,959 INFO L226 Difference]: Without dead ends: 27 [2021-10-29 05:08:14,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:08:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-29 05:08:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-29 05:08:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-29 05:08:14,965 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2021-10-29 05:08:14,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:14,966 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-29 05:08:14,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-29 05:08:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:08:14,967 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:14,967 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] [2021-10-29 05:08:14,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:15,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:15,168 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-10-29 05:08:15,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:15,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821280552] [2021-10-29 05:08:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:15,169 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:15,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:15,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:15,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:08:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:15,367 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:08:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:15,512 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:08:15,512 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:08:15,513 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:08:15,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:15,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:15,718 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:15,720 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:08:15,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:08:15 BoogieIcfgContainer [2021-10-29 05:08:15,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:08:15,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:08:15,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:08:15,763 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:08:15,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:10" (3/4) ... [2021-10-29 05:08:15,769 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:08:15,817 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:08:15,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:08:15,819 INFO L168 Benchmark]: Toolchain (without parser) took 6794.90 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 44.0 MB in the beginning and 48.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:15,820 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 60.7 MB in the beginning and 60.7 MB in the end (delta: 72.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:15,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.13 ms. Allocated memory is still 79.7 MB. Free memory was 43.8 MB in the beginning and 62.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:15,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.97 ms. Allocated memory is still 79.7 MB. Free memory was 62.4 MB in the beginning and 60.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:15,823 INFO L168 Benchmark]: Boogie Preprocessor took 53.11 ms. Allocated memory is still 79.7 MB. Free memory was 60.5 MB in the beginning and 59.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:15,823 INFO L168 Benchmark]: RCFGBuilder took 577.51 ms. Allocated memory is still 79.7 MB. Free memory was 59.0 MB in the beginning and 45.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:15,824 INFO L168 Benchmark]: TraceAbstraction took 5745.67 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 44.4 MB in the beginning and 51.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:15,824 INFO L168 Benchmark]: Witness Printer took 55.16 ms. Allocated memory is still 96.5 MB. Free memory was 51.2 MB in the beginning and 48.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:15,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 60.7 MB in the beginning and 60.7 MB in the end (delta: 72.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.13 ms. Allocated memory is still 79.7 MB. Free memory was 43.8 MB in the beginning and 62.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.97 ms. Allocated memory is still 79.7 MB. Free memory was 62.4 MB in the beginning and 60.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.11 ms. Allocated memory is still 79.7 MB. Free memory was 60.5 MB in the beginning and 59.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 577.51 ms. Allocated memory is still 79.7 MB. Free memory was 59.0 MB in the beginning and 45.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5745.67 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 44.4 MB in the beginning and 51.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 55.16 ms. Allocated memory is still 96.5 MB. Free memory was 51.2 MB in the beginning and 48.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. 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 - CounterExampleResult [Line: 82]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L48] COND FALSE !(__fpclassify_double(x) == 0) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L50] COND FALSE !(__fpclassify_double(y) == 0) [L53] EXPR x < y ? x : y [L53] return x < y ? x : y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L57] __uint32_t msw; [L60] ieee_double_shape_type gh_u; [L61] gh_u.value = (x) [L62] EXPR gh_u.parts.msw [L62] (msw) = gh_u.parts.msw [L65] return (msw & 0x80000000) != 0; [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 249 SDslu, 387 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 33, 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 666 SizeOfPredicates, 27 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 proved your program to be incorrect! [2021-10-29 05:08:15,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac41dab-ad3f-4048-ba6c-b1c970c6f234/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...