./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7b03c010cc5bb74fc451f0f165676fac13dd665 .............................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7b03c010cc5bb74fc451f0f165676fac13dd665 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:20:15,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:20:15,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:20:15,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:20:15,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:20:15,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:20:15,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:20:15,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:20:15,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:20:15,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:20:15,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:20:15,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:20:15,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:20:15,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:20:15,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:20:15,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:20:15,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:20:15,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:20:15,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:20:15,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:20:15,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:20:15,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:20:15,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:20:15,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:20:15,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:20:15,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:20:15,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:20:15,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:20:15,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:20:15,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:20:15,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:20:15,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:20:15,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:20:15,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:20:15,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:20:15,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:20:15,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:20:15,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:20:15,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:20:15,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:20:15,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:20:15,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 21:20:15,454 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:20:15,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:20:15,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:20:15,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:20:15,456 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:20:15,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:20:15,457 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:20:15,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:20:15,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:20:15,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:20:15,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:20:15,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:20:15,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:20:15,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:20:15,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:20:15,459 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:20:15,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:20:15,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:20:15,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:20:15,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:20:15,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:20:15,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:20:15,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:20:15,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:20:15,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:20:15,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:20:15,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 21:20:15,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:20:15,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> f7b03c010cc5bb74fc451f0f165676fac13dd665 [2019-11-15 21:20:15,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:20:15,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:20:15,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:20:15,519 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:20:15,519 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:20:15,520 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c [2019-11-15 21:20:15,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data/bbed3fab3/5ccfb93c9124471394f4dd2921400828/FLAG68b9149c7 [2019-11-15 21:20:16,004 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:20:16,011 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/sv-benchmarks/c/float-newlib/double_req_bl_0661b.c [2019-11-15 21:20:16,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data/bbed3fab3/5ccfb93c9124471394f4dd2921400828/FLAG68b9149c7 [2019-11-15 21:20:16,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data/bbed3fab3/5ccfb93c9124471394f4dd2921400828 [2019-11-15 21:20:16,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:20:16,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:20:16,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:20:16,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:20:16,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:20:16,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4397ca16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16, skipping insertion in model container [2019-11-15 21:20:16,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,412 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:20:16,443 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:20:16,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:20:16,716 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:20:16,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:20:16,797 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:20:16,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16 WrapperNode [2019-11-15 21:20:16,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:20:16,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:20:16,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:20:16,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:20:16,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:20:16,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:20:16,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:20:16,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:20:16,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... [2019-11-15 21:20:16,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:20:16,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:20:16,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:20:16,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:20:16,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:20:17,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:20:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 21:20:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 21:20:17,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 21:20:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:20:17,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:20:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 21:20:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-15 21:20:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:20:17,925 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:20:17,926 INFO L284 CfgBuilder]: Removed 48 assume(true) statements. [2019-11-15 21:20:17,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:20:17 BoogieIcfgContainer [2019-11-15 21:20:17,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:20:17,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:20:17,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:20:17,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:20:17,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:20:16" (1/3) ... [2019-11-15 21:20:17,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77424a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:20:17, skipping insertion in model container [2019-11-15 21:20:17,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:16" (2/3) ... [2019-11-15 21:20:17,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77424a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:20:17, skipping insertion in model container [2019-11-15 21:20:17,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:20:17" (3/3) ... [2019-11-15 21:20:17,933 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b.c [2019-11-15 21:20:17,940 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:20:17,946 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:20:17,956 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:20:17,978 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:20:17,978 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:20:17,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:20:17,978 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:20:17,978 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:20:17,978 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:20:17,978 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:20:17,979 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:20:17,997 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2019-11-15 21:20:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 21:20:18,005 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:18,005 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:18,007 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:20:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:18,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1517456143, now seen corresponding path program 1 times [2019-11-15 21:20:18,023 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:18,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980709430] [2019-11-15 21:20:18,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:18,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:18,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:18,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980709430] [2019-11-15 21:20:18,192 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:20:18,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:20:18,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895684786] [2019-11-15 21:20:18,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:20:18,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:20:18,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:20:18,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:20:18,209 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 2 states. [2019-11-15 21:20:18,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:18,235 INFO L93 Difference]: Finished difference Result 237 states and 398 transitions. [2019-11-15 21:20:18,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:20:18,238 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-15 21:20:18,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:18,249 INFO L225 Difference]: With dead ends: 237 [2019-11-15 21:20:18,249 INFO L226 Difference]: Without dead ends: 116 [2019-11-15 21:20:18,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:20:18,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-15 21:20:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2019-11-15 21:20:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-15 21:20:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 165 transitions. [2019-11-15 21:20:18,293 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 165 transitions. Word has length 12 [2019-11-15 21:20:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:18,293 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 165 transitions. [2019-11-15 21:20:18,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:20:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 165 transitions. [2019-11-15 21:20:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:20:18,294 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:18,294 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:18,294 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:20:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:18,295 INFO L82 PathProgramCache]: Analyzing trace with hash -229938040, now seen corresponding path program 1 times [2019-11-15 21:20:18,295 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:20:18,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206103443] [2019-11-15 21:20:18,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:18,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:20:18,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:20:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:20:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:20:18,581 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:20:18,582 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 21:20:18,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 09:20:18 BoogieIcfgContainer [2019-11-15 21:20:18,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 21:20:18,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:20:18,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:20:18,652 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:20:18,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:20:17" (3/4) ... [2019-11-15 21:20:18,656 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:20:18,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:20:18,659 INFO L168 Benchmark]: Toolchain (without parser) took 2259.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 948.8 MB in the beginning and 985.7 MB in the end (delta: -36.8 MB). Peak memory consumption was 79.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:18,660 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:20:18,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -150.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:18,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:20:18,662 INFO L168 Benchmark]: Boogie Preprocessor took 97.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:18,663 INFO L168 Benchmark]: RCFGBuilder took 965.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:18,664 INFO L168 Benchmark]: TraceAbstraction took 723.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 985.7 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:18,664 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 1.1 GB. Free memory is still 985.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:20:18,671 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 398.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -150.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.18 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 97.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 965.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 723.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 985.7 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.47 ms. Allocated memory is still 1.1 GB. Free memory is still 985.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 271]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 270. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L264] double x = __VERIFIER_nondet_double(); [L265] double y = 0.0; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L267] COND TRUE x > 0.0 [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L268] double res = __ieee754_atan2(y, x); [L270] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L270] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L271] __VERIFIER_error() VAL [aT_atan={1:0}, atanhi_atan={-2:0}, atanlo_atan={-3:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 170 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 21:20:20,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:20:20,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:20:20,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:20:20,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:20:20,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:20:20,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:20:20,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:20:20,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:20:20,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:20:20,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:20:20,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:20:20,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:20:20,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:20:20,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:20:20,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:20:20,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:20:20,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:20:20,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:20:20,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:20:20,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:20:20,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:20:20,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:20:20,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:20:20,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:20:20,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:20:20,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:20:20,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:20:20,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:20:20,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:20:20,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:20:20,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:20:20,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:20:20,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:20:20,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:20:20,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:20:20,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:20:20,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:20:20,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:20:20,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:20:20,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:20:20,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 21:20:20,773 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:20:20,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:20:20,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:20:20,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:20:20,774 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:20:20,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:20:20,775 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 21:20:20,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 21:20:20,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:20:20,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 21:20:20,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 21:20:20,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 21:20:20,776 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 21:20:20,776 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 21:20:20,776 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 21:20:20,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:20:20,777 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:20:20,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 21:20:20,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:20:20,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:20:20,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 21:20:20,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 21:20:20,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:20:20,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:20:20,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 21:20:20,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 21:20:20,779 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 21:20:20,779 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 21:20:20,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 21:20:20,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 21:20:20,779 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> f7b03c010cc5bb74fc451f0f165676fac13dd665 [2019-11-15 21:20:20,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:20:20,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:20:20,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:20:20,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:20:20,827 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:20:20,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0661b.c [2019-11-15 21:20:20,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data/f0f24f821/952e73324ad04838b2a21e7b04f35dd2/FLAG8c3ce735c [2019-11-15 21:20:21,239 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:20:21,240 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/sv-benchmarks/c/float-newlib/double_req_bl_0661b.c [2019-11-15 21:20:21,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data/f0f24f821/952e73324ad04838b2a21e7b04f35dd2/FLAG8c3ce735c [2019-11-15 21:20:21,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/data/f0f24f821/952e73324ad04838b2a21e7b04f35dd2 [2019-11-15 21:20:21,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:20:21,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:20:21,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:20:21,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:20:21,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:20:21,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:20:21" (1/1) ... [2019-11-15 21:20:21,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33371f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:21, skipping insertion in model container [2019-11-15 21:20:21,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:20:21" (1/1) ... [2019-11-15 21:20:21,627 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:20:21,651 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:20:21,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:20:21,936 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:20:22,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:20:22,082 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:20:22,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22 WrapperNode [2019-11-15 21:20:22,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:20:22,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:20:22,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:20:22,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:20:22,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:20:22,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:20:22,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:20:22,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:20:22,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... [2019-11-15 21:20:22,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:20:22,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:20:22,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:20:22,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:20:22,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 21:20:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-15 21:20:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 21:20:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 21:20:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-11-15 21:20:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 21:20:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:20:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:20:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 21:20:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 21:20:58,280 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:20:58,280 INFO L284 CfgBuilder]: Removed 48 assume(true) statements. [2019-11-15 21:20:58,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:20:58 BoogieIcfgContainer [2019-11-15 21:20:58,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:20:58,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 21:20:58,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 21:20:58,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 21:20:58,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 09:20:21" (1/3) ... [2019-11-15 21:20:58,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79280746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:20:58, skipping insertion in model container [2019-11-15 21:20:58,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:20:22" (2/3) ... [2019-11-15 21:20:58,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79280746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 09:20:58, skipping insertion in model container [2019-11-15 21:20:58,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:20:58" (3/3) ... [2019-11-15 21:20:58,296 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661b.c [2019-11-15 21:20:58,305 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 21:20:58,312 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 21:20:58,323 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 21:20:58,354 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 21:20:58,354 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 21:20:58,354 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 21:20:58,355 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:20:58,355 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:20:58,355 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 21:20:58,356 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:20:58,356 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 21:20:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2019-11-15 21:20:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 21:20:58,382 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:58,383 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:58,385 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:20:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:58,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1517456143, now seen corresponding path program 1 times [2019-11-15 21:20:58,403 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:20:58,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319742002] [2019-11-15 21:20:58,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-15 21:20:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:58,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 21:20:58,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:20:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:58,739 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 21:20:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:20:58,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319742002] [2019-11-15 21:20:58,744 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:20:58,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 21:20:58,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630927944] [2019-11-15 21:20:58,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 21:20:58,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 21:20:58,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 21:20:58,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:20:58,764 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 2 states. [2019-11-15 21:20:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:20:58,793 INFO L93 Difference]: Finished difference Result 237 states and 398 transitions. [2019-11-15 21:20:58,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 21:20:58,794 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-15 21:20:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 21:20:58,806 INFO L225 Difference]: With dead ends: 237 [2019-11-15 21:20:58,806 INFO L226 Difference]: Without dead ends: 116 [2019-11-15 21:20:58,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 21:20:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-15 21:20:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2019-11-15 21:20:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-15 21:20:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 165 transitions. [2019-11-15 21:20:58,851 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 165 transitions. Word has length 12 [2019-11-15 21:20:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 21:20:58,852 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 165 transitions. [2019-11-15 21:20:58,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 21:20:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 165 transitions. [2019-11-15 21:20:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 21:20:58,853 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 21:20:58,853 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 21:20:59,069 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 21:20:59,069 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 21:20:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:20:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash -229938040, now seen corresponding path program 1 times [2019-11-15 21:20:59,070 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 21:20:59,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636078103] [2019-11-15 21:20:59,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68539bae-c55f-4747-ba01-744634cc84f0/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-15 21:20:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:20:59,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-15 21:20:59,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:20:59,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 21:20:59,753 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) 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:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 21:20:59,758 INFO L168 Benchmark]: Toolchain (without parser) took 38145.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -49.4 MB). Peak memory consumption was 111.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:59,758 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:20:59,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -199.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:59,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:59,760 INFO L168 Benchmark]: Boogie Preprocessor took 69.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:59,761 INFO L168 Benchmark]: RCFGBuilder took 36064.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:59,761 INFO L168 Benchmark]: TraceAbstraction took 1473.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 11.5 GB. [2019-11-15 21:20:59,777 INFO L335 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 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 469.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -199.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 36064.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1473.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...