./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs --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 8d8de9a3f47b00df6084aa30a2af1678ed452538 .......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs --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 8d8de9a3f47b00df6084aa30a2af1678ed452538 ..................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:05:39,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:05:39,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:05:39,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:05:39,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:05:39,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:05:39,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:05:39,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:05:39,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:05:39,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:05:39,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:05:39,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:05:39,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:05:39,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:05:39,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:05:39,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:05:39,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:05:39,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:05:39,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:05:39,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:05:39,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:05:39,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:05:39,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:05:39,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:05:39,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:05:39,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:05:39,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:05:39,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:05:39,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:05:39,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:05:39,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:05:39,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:05:39,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:05:39,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:05:39,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:05:39,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:05:39,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:05:39,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:05:39,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:05:39,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:05:39,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:05:39,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:05:39,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:05:39,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:05:39,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:05:39,579 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:05:39,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:05:39,579 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:05:39,579 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:05:39,580 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:05:39,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:05:39,588 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:05:39,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:05:39,590 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:05:39,590 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:05:39,590 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:05:39,591 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:05:39,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:05:39,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:05:39,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:05:39,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:05:39,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:05:39,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:05:39,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:05:39,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:05:39,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:05:39,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:05:39,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:05:39,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:05:39,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:05:39,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:05:39,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:05:39,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:39,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:05:39,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:05:39,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:05:39,599 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:05:39,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:05:39,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:05:39,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:05:39,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:05:39,600 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_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8de9a3f47b00df6084aa30a2af1678ed452538 [2021-10-16 03:05:39,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:05:39,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:05:39,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:05:39,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:05:39,932 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:05:39,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-10-16 03:05:40,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data/87c4aff65/f786d107a10c40bfbf4c197c49d44368/FLAG965819ba7 [2021-10-16 03:05:40,536 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:05:40,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-10-16 03:05:40,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data/87c4aff65/f786d107a10c40bfbf4c197c49d44368/FLAG965819ba7 [2021-10-16 03:05:40,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data/87c4aff65/f786d107a10c40bfbf4c197c49d44368 [2021-10-16 03:05:40,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:05:40,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:05:40,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:40,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:05:40,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:05:40,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:40" (1/1) ... [2021-10-16 03:05:40,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490503a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:40, skipping insertion in model container [2021-10-16 03:05:40,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:40" (1/1) ... [2021-10-16 03:05:40,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:05:40,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:05:41,190 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_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-10-16 03:05:41,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:41,207 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:05:41,235 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_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-10-16 03:05:41,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:41,253 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:05:41,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41 WrapperNode [2021-10-16 03:05:41,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:41,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:41,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:05:41,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:05:41,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:41,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:05:41,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:05:41,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:05:41,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:05:41,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:05:41,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:05:41,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:05:41,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (1/1) ... [2021-10-16 03:05:41,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:41,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:41,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:05:41,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:05:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:05:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:05:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 03:05:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:05:41,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 03:05:41,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:05:41,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:05:41,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:05:41,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:05:41,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:05:41,784 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 03:05:41,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:41 BoogieIcfgContainer [2021-10-16 03:05:41,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:05:41,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:05:41,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:05:41,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:05:41,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:05:40" (1/3) ... [2021-10-16 03:05:41,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4a43b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:41, skipping insertion in model container [2021-10-16 03:05:41,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:41" (2/3) ... [2021-10-16 03:05:41,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4a43b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:41, skipping insertion in model container [2021-10-16 03:05:41,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:41" (3/3) ... [2021-10-16 03:05:41,797 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton.c.p+cfa-reducer.c [2021-10-16 03:05:41,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:05:41,804 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:05:41,864 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:05:41,872 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:05:41,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:05:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) [2021-10-16 03:05:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:05:41,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:41,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:41,913 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:41,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1934553295, now seen corresponding path program 1 times [2021-10-16 03:05:41,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:41,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645929239] [2021-10-16 03:05:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:41,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:42,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:42,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645929239] [2021-10-16 03:05:42,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645929239] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:42,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:42,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 03:05:42,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452533980] [2021-10-16 03:05:42,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:42,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:42,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:42,227 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-16 03:05:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:42,299 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2021-10-16 03:05:42,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:05:42,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2021-10-16 03:05:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:42,312 INFO L225 Difference]: With dead ends: 45 [2021-10-16 03:05:42,312 INFO L226 Difference]: Without dead ends: 32 [2021-10-16 03:05:42,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:05:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-16 03:05:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 18. [2021-10-16 03:05:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2021-10-16 03:05:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-10-16 03:05:42,356 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 10 [2021-10-16 03:05:42,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:42,356 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-10-16 03:05:42,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-16 03:05:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-10-16 03:05:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:05:42,358 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:42,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:42,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:05:42,359 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:42,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:42,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1483588724, now seen corresponding path program 1 times [2021-10-16 03:05:42,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:42,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347530458] [2021-10-16 03:05:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:42,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:42,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:42,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347530458] [2021-10-16 03:05:42,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347530458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:42,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:42,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 03:05:42,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502257124] [2021-10-16 03:05:42,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:05:42,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:05:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:05:42,487 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-16 03:05:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:42,578 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-10-16 03:05:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:05:42,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2021-10-16 03:05:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:42,580 INFO L225 Difference]: With dead ends: 43 [2021-10-16 03:05:42,580 INFO L226 Difference]: Without dead ends: 36 [2021-10-16 03:05:42,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:05:42,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-16 03:05:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 19. [2021-10-16 03:05:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-10-16 03:05:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-10-16 03:05:42,590 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 14 [2021-10-16 03:05:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:42,590 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-16 03:05:42,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-16 03:05:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-10-16 03:05:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:05:42,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:42,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:42,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:05:42,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:42,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2029187665, now seen corresponding path program 1 times [2021-10-16 03:05:42,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:42,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177055092] [2021-10-16 03:05:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:42,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 03:05:42,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:42,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177055092] [2021-10-16 03:05:42,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177055092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:42,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:42,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 03:05:42,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512321398] [2021-10-16 03:05:42,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:05:42,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:05:42,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:05:42,691 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-16 03:05:42,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:42,802 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-10-16 03:05:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:05:42,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2021-10-16 03:05:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:42,804 INFO L225 Difference]: With dead ends: 40 [2021-10-16 03:05:42,804 INFO L226 Difference]: Without dead ends: 34 [2021-10-16 03:05:42,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:05:42,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-16 03:05:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 19. [2021-10-16 03:05:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-10-16 03:05:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-16 03:05:42,811 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 14 [2021-10-16 03:05:42,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:42,812 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-16 03:05:42,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-16 03:05:42,812 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-10-16 03:05:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:05:42,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:42,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:42,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 03:05:42,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:42,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2046198326, now seen corresponding path program 1 times [2021-10-16 03:05:42,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:42,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440885442] [2021-10-16 03:05:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:42,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:05:42,860 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:05:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:05:42,912 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:05:42,912 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:05:42,914 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:05:42,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 03:05:42,923 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:05:42,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:05:42 BoogieIcfgContainer [2021-10-16 03:05:42,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:05:42,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:05:42,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:05:42,965 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:05:42,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:41" (3/4) ... [2021-10-16 03:05:42,969 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:05:42,976 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:05:42,979 INFO L168 Benchmark]: Toolchain (without parser) took 2059.74 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.6 MB in the beginning and 77.0 MB in the end (delta: -12.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:42,980 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:42,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.83 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.6 MB in the beginning and 94.3 MB in the end (delta: -29.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:42,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 117.4 MB. Free memory was 94.3 MB in the beginning and 92.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:42,983 INFO L168 Benchmark]: Boogie Preprocessor took 30.38 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:42,984 INFO L168 Benchmark]: RCFGBuilder took 451.85 ms. Allocated memory is still 117.4 MB. Free memory was 91.2 MB in the beginning and 79.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:42,984 INFO L168 Benchmark]: TraceAbstraction took 1174.32 ms. Allocated memory is still 117.4 MB. Free memory was 78.6 MB in the beginning and 77.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:42,985 INFO L168 Benchmark]: Witness Printer took 12.07 ms. Allocated memory is still 117.4 MB. Free memory was 77.1 MB in the beginning and 77.0 MB in the end (delta: 141.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:42,999 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 94.4 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.83 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.6 MB in the beginning and 94.3 MB in the end (delta: -29.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 117.4 MB. Free memory was 94.3 MB in the beginning and 92.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.38 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 451.85 ms. Allocated memory is still 117.4 MB. Free memory was 91.2 MB in the beginning and 79.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1174.32 ms. Allocated memory is still 117.4 MB. Free memory was 78.6 MB in the beginning and 77.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Witness Printer took 12.07 ms. Allocated memory is still 117.4 MB. Free memory was 77.1 MB in the beginning and 77.0 MB in the end (delta: 141.7 kB). 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 96]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 45, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53, overapproximation of someBinaryDOUBLEComparisonOperation at line 83, overapproximation of to_real at line 46. Possible FailurePath: [L1] int __return_main; [L17] double __return_104; [L20] double main__a; [L21] double main__r; [L22] main__a = __VERIFIER_nondet_double() [L23] int main____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0] [L24] COND TRUE main__a >= 20.0 VAL [__return_104=0, __return_main=0] [L26] COND TRUE main__a <= 30.0 [L28] main____CPAchecker_TMP_0 = 1 VAL [__return_104=0, __return_main=0] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] double __tmp_1; [L34] __tmp_1 = main__a [L35] double inv__A; [L36] inv__A = __tmp_1 [L37] double inv__xi; [L38] double inv__xsi; [L39] double inv__temp; [L40] signed int inv__cond; [L41] signed int inv__exp; [L42] union double_int inv__A_u; [L43] union double_int inv__xi_u; [L44] inv__A_u.d = inv__A [L45] EXPR inv__A_u.i [L45] inv__exp = ((signed int)(((inv__A_u.i) & 2146435072) >> 20)) - 1023 [L46] inv__xi_u.d = 1 [L47] inv__xi_u.i = (1023 - inv__exp) << 20 [L48] EXPR inv__xi_u.d [L48] inv__xi = inv__xi_u.d [L49] inv__cond = 1 VAL [__return_104=0, __return_main=0] [L51] COND TRUE !(inv__cond == 0) [L53] inv__xsi = (2 * inv__xi) - ((inv__A * inv__xi) * inv__xi) [L54] inv__temp = inv__xsi - inv__xi [L55] int inv____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0] [L56] COND FALSE !(inv__temp > 1.0E-10) VAL [__return_104=0, __return_main=0] [L67] COND FALSE !(inv__temp < -1.0E-10) [L73] inv____CPAchecker_TMP_0 = 0 VAL [__return_104=0, __return_main=0] [L61] inv__cond = inv____CPAchecker_TMP_0 [L62] inv__xi = inv__xsi VAL [__return_104=0, __return_main=0] [L51] COND FALSE !(!(inv__cond == 0)) [L80] __return_104 = inv__xi [L81] main__r = __return_104 [L82] int main____CPAchecker_TMP_1; VAL [__return_104=2145386501, __return_main=0] [L83] COND FALSE !(main__r >= 0) VAL [__return_104=2145386501, __return_main=0] [L108] main____CPAchecker_TMP_1 = 0 VAL [__return_104=2145386501, __return_main=0] [L90] int __tmp_2; [L91] __tmp_2 = main____CPAchecker_TMP_1 [L92] int __VERIFIER_assert__cond; [L93] __VERIFIER_assert__cond = __tmp_2 VAL [__return_104=2145386501, __return_main=0] [L94] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_104=2145386501, __return_main=0] [L96] reach_error() VAL [__return_104=2145386501, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1060.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 13.3ms, AutomataDifference: 316.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 82 SDslu, 138 SDs, 0 SdLazy, 44 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.6ms SsaConstructionTime, 110.5ms SatisfiabilityAnalysisTime, 226.1ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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 [2021-10-16 03:05:43,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:05:45,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:05:45,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:05:45,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:05:45,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:05:45,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:05:45,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:05:45,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:05:45,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:05:45,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:05:45,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:05:45,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:05:45,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:05:45,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:05:45,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:05:45,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:05:45,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:05:45,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:05:45,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:05:45,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:05:45,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:05:45,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:05:45,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:05:45,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:05:45,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:05:45,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:05:45,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:05:45,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:05:45,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:05:45,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:05:45,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:05:45,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:05:46,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:05:46,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:05:46,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:05:46,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:05:46,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:05:46,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:05:46,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:05:46,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:05:46,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:05:46,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:05:46,060 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:05:46,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:05:46,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:05:46,062 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:05:46,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:05:46,062 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:05:46,063 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:05:46,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:05:46,063 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:05:46,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:05:46,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:05:46,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:05:46,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:05:46,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:05:46,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:05:46,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:05:46,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:05:46,066 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:05:46,066 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:05:46,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:05:46,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:05:46,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:05:46,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:05:46,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:05:46,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:05:46,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:05:46,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:46,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:05:46,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:05:46,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:05:46,069 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:05:46,069 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:46,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:05:46,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:05:46,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:05:46,070 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_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8de9a3f47b00df6084aa30a2af1678ed452538 [2021-10-16 03:05:46,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:05:46,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:05:46,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:05:46,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:05:46,560 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:05:46,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-10-16 03:05:46,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data/ec5d021a0/6aa31ded496542e4b121d1d0f61429cf/FLAGc98d4d81e [2021-10-16 03:05:47,255 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:05:47,260 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-10-16 03:05:47,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data/ec5d021a0/6aa31ded496542e4b121d1d0f61429cf/FLAGc98d4d81e [2021-10-16 03:05:47,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/data/ec5d021a0/6aa31ded496542e4b121d1d0f61429cf [2021-10-16 03:05:47,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:05:47,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:05:47,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:47,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:05:47,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:05:47,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:47,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cab77b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47, skipping insertion in model container [2021-10-16 03:05:47,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:47,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:05:47,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:05:47,781 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_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-10-16 03:05:47,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:47,801 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:05:47,840 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_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-10-16 03:05:47,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:47,899 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:05:47,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47 WrapperNode [2021-10-16 03:05:47,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:47,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:47,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:05:47,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:05:47,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:47,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:47,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:47,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:05:47,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:05:47,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:05:48,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:48,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:48,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:48,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:48,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:48,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:48,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:48,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:05:48,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:05:48,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:05:48,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:05:48,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (1/1) ... [2021-10-16 03:05:48,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:48,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:48,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:05:48,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:05:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-16 03:05:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-16 03:05:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:05:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:05:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:05:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:05:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:05:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:05:48,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:05:49,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:05:49,688 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 03:05:49,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:49 BoogieIcfgContainer [2021-10-16 03:05:49,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:05:49,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:05:49,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:05:49,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:05:49,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:05:47" (1/3) ... [2021-10-16 03:05:49,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0897d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:49, skipping insertion in model container [2021-10-16 03:05:49,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:47" (2/3) ... [2021-10-16 03:05:49,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0897d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:49, skipping insertion in model container [2021-10-16 03:05:49,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:49" (3/3) ... [2021-10-16 03:05:49,700 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton.c.p+cfa-reducer.c [2021-10-16 03:05:49,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:05:49,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:05:49,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:05:49,766 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:05:49,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:05:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) [2021-10-16 03:05:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:05:49,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:49,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:49,786 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:49,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:49,791 INFO L82 PathProgramCache]: Analyzing trace with hash -938930996, now seen corresponding path program 1 times [2021-10-16 03:05:49,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:49,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87794799] [2021-10-16 03:05:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:49,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:49,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:49,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:49,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:05:49,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 03:05:50,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:50,102 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:577) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertConjunctsOfCodeBlocks.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertConjuncts(AnnotateAndAssertConjunctsOfCodeBlocks.java:135) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertConjunctsOfCodeBlocks.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:312) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) ... 31 more [2021-10-16 03:05:50,112 INFO L168 Benchmark]: Toolchain (without parser) took 2526.84 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 50.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 891.4 kB. Max. memory is 16.1 GB. [2021-10-16 03:05:50,113 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 50.7 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:50,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.50 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 52.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:50,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.71 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 50.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:50,117 INFO L168 Benchmark]: Boogie Preprocessor took 68.80 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:50,118 INFO L168 Benchmark]: RCFGBuilder took 1629.67 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 37.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:50,125 INFO L168 Benchmark]: TraceAbstraction took 415.84 ms. Allocated memory is still 69.2 MB. Free memory was 37.0 MB in the beginning and 50.6 MB in the end (delta: -13.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:50,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 50.7 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.50 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 52.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.71 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 50.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.80 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1629.67 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 37.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 415.84 ms. Allocated memory is still 69.2 MB. Free memory was 37.0 MB in the beginning and 50.6 MB in the end (delta: -13.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:05:50,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6069aba6-0bd7-4bc8-a454-3f78b05c3b47/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...