./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 788527977e7ebd7aa0a832758f41b65d3cbd270a ............................................................................................................................................................................................................................................................................................... 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_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 788527977e7ebd7aa0a832758f41b65d3cbd270a ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:23:58,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:23:58,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:23:58,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:23:58,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:23:58,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:23:58,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:23:58,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:23:58,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:23:58,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:23:58,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:23:58,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:23:58,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:23:58,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:23:58,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:23:58,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:23:58,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:23:58,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:23:58,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:23:58,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:23:58,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:23:58,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:23:58,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:23:58,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:23:58,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:23:58,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:23:58,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:23:58,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:23:58,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:23:58,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:23:58,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:23:58,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:23:58,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:23:58,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:23:58,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:23:58,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:23:58,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:23:58,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:23:58,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:23:58,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:23:58,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:23:58,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:23:58,056 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:23:58,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:23:58,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:23:58,057 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:23:58,057 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:23:58,057 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:23:58,057 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:23:58,057 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:23:58,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:23:58,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:23:58,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:23:58,058 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:23:58,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:23:58,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:23:58,058 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:23:58,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:23:58,058 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:23:58,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:23:58,060 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:23:58,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:23:58,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:23:58,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:23:58,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:23:58,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:23:58,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:23:58,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:23:58,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:23:58,061 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:23:58,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:23:58,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:23:58,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:23:58,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:23:58,061 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan 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 -> 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 -> 788527977e7ebd7aa0a832758f41b65d3cbd270a [2019-12-07 15:23:58,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:23:58,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:23:58,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:23:58,177 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:23:58,178 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:23:58,178 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2019-12-07 15:23:58,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data/578e00d11/929ceb5b20254c51a4b20419a1fea1b6/FLAGf299fcf13 [2019-12-07 15:23:58,627 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:23:58,627 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2019-12-07 15:23:58,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data/578e00d11/929ceb5b20254c51a4b20419a1fea1b6/FLAGf299fcf13 [2019-12-07 15:23:58,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data/578e00d11/929ceb5b20254c51a4b20419a1fea1b6 [2019-12-07 15:23:58,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:23:58,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:23:58,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:23:58,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:23:58,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:23:58,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165689ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58, skipping insertion in model container [2019-12-07 15:23:58,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:23:58,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:23:58,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:23:58,830 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:23:58,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:23:58,871 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:23:58,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58 WrapperNode [2019-12-07 15:23:58,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:23:58,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:23:58,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:23:58,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:23:58,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:23:58,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:23:58,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:23:58,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:23:58,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... [2019-12-07 15:23:58,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:23:58,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:23:58,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:23:58,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:23:58,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/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 [2019-12-07 15:23:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:23:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 15:23:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:23:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 15:23:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:23:58,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:23:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:23:58,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:23:59,442 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:23:59,442 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 15:23:59,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:23:59 BoogieIcfgContainer [2019-12-07 15:23:59,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:23:59,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:23:59,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:23:59,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:23:59,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:23:58" (1/3) ... [2019-12-07 15:23:59,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ad1bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:23:59, skipping insertion in model container [2019-12-07 15:23:59,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:23:58" (2/3) ... [2019-12-07 15:23:59,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ad1bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:23:59, skipping insertion in model container [2019-12-07 15:23:59,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:23:59" (3/3) ... [2019-12-07 15:23:59,448 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2019-12-07 15:23:59,454 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:23:59,460 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:23:59,467 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:23:59,483 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:23:59,483 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:23:59,483 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:23:59,483 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:23:59,484 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:23:59,484 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:23:59,484 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:23:59,484 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:23:59,494 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-07 15:23:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:23:59,497 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:59,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:59,498 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:59,502 INFO L82 PathProgramCache]: Analyzing trace with hash -323894289, now seen corresponding path program 1 times [2019-12-07 15:23:59,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:23:59,508 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901762700] [2019-12-07 15:23:59,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:23:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:23:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:23:59,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901762700] [2019-12-07 15:23:59,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:23:59,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:23:59,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897672216] [2019-12-07 15:23:59,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:23:59,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:23:59,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:23:59,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:23:59,596 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-12-07 15:23:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:23:59,609 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2019-12-07 15:23:59,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:23:59,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-12-07 15:23:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:23:59,617 INFO L225 Difference]: With dead ends: 53 [2019-12-07 15:23:59,617 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 15:23:59,620 INFO L630 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 [2019-12-07 15:23:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 15:23:59,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 15:23:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:23:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2019-12-07 15:23:59,644 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2019-12-07 15:23:59,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:23:59,644 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2019-12-07 15:23:59,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:23:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2019-12-07 15:23:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:23:59,645 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:23:59,645 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:23:59,645 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:23:59,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:23:59,645 INFO L82 PathProgramCache]: Analyzing trace with hash 572312428, now seen corresponding path program 1 times [2019-12-07 15:23:59,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:23:59,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930780497] [2019-12-07 15:23:59,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:23:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:23:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:23:59,702 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 15:23:59,703 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:23:59,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:23:59 BoogieIcfgContainer [2019-12-07 15:23:59,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:23:59,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:23:59,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:23:59,722 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:23:59,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:23:59" (3/4) ... [2019-12-07 15:23:59,724 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:23:59,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:23:59,726 INFO L168 Benchmark]: Toolchain (without parser) took 1081.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 946.1 MB in the beginning and 986.1 MB in the end (delta: -40.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:59,726 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:23:59,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:59,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.07 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:59,727 INFO L168 Benchmark]: Boogie Preprocessor took 24.25 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. [2019-12-07 15:23:59,727 INFO L168 Benchmark]: RCFGBuilder took 514.68 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: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:59,728 INFO L168 Benchmark]: TraceAbstraction took 277.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 986.1 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:23:59,728 INFO L168 Benchmark]: Witness Printer took 2.79 ms. Allocated memory is still 1.1 GB. Free memory is still 986.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:23:59,730 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 227.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -145.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.07 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.25 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. * RCFGBuilder took 514.68 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: 72.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 277.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 986.1 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.79 ms. Allocated memory is still 1.1 GB. Free memory is still 986.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 153. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L149] double x = -0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L153] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L154] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 36 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=27occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 0.1.25-f470102 [2019-12-07 15:24:01,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:24:01,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:24:01,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:24:01,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:24:01,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:24:01,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:24:01,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:24:01,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:24:01,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:24:01,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:24:01,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:24:01,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:24:01,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:24:01,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:24:01,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:24:01,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:24:01,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:24:01,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:24:01,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:24:01,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:24:01,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:24:01,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:24:01,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:24:01,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:24:01,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:24:01,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:24:01,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:24:01,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:24:01,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:24:01,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:24:01,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:24:01,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:24:01,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:24:01,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:24:01,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:24:01,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:24:01,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:24:01,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:24:01,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:24:01,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:24:01,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 15:24:01,158 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:24:01,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:24:01,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:24:01,159 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:24:01,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:24:01,159 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:24:01,159 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:24:01,159 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:24:01,159 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:24:01,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:24:01,160 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:24:01,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:24:01,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:24:01,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:24:01,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:24:01,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:24:01,161 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:24:01,161 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:24:01,161 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:24:01,161 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:24:01,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:24:01,161 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:24:01,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:24:01,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:24:01,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:24:01,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:24:01,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:24:01,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:24:01,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:24:01,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:24:01,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:24:01,163 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 15:24:01,163 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:24:01,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:24:01,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:24:01,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:24:01,163 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_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan 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 -> 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 -> 788527977e7ebd7aa0a832758f41b65d3cbd270a [2019-12-07 15:24:01,334 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:24:01,345 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:24:01,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:24:01,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:24:01,349 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:24:01,350 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2019-12-07 15:24:01,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data/eb1664a5f/6c024a3ade264607a6c60f7d878453de/FLAGffc000687 [2019-12-07 15:24:01,809 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:24:01,809 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2019-12-07 15:24:01,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data/eb1664a5f/6c024a3ade264607a6c60f7d878453de/FLAGffc000687 [2019-12-07 15:24:01,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/data/eb1664a5f/6c024a3ade264607a6c60f7d878453de [2019-12-07 15:24:01,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:24:01,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:24:01,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:24:01,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:24:01,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:24:01,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:24:01" (1/1) ... [2019-12-07 15:24:01,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4c18cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:01, skipping insertion in model container [2019-12-07 15:24:01,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:24:01" (1/1) ... [2019-12-07 15:24:01,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:24:01,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:24:01,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:24:01,981 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:24:02,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:24:02,060 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:24:02,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02 WrapperNode [2019-12-07 15:24:02,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:24:02,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:24:02,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:24:02,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:24:02,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:24:02,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:24:02,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:24:02,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:24:02,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... [2019-12-07 15:24:02,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:24:02,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:24:02,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:24:02,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:24:02,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/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 [2019-12-07 15:24:02,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 15:24:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 15:24:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:24:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 15:24:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:24:02,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:24:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 15:24:02,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:24:04,678 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:24:04,678 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 15:24:04,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:24:04 BoogieIcfgContainer [2019-12-07 15:24:04,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:24:04,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:24:04,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:24:04,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:24:04,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:24:01" (1/3) ... [2019-12-07 15:24:04,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d729386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:24:04, skipping insertion in model container [2019-12-07 15:24:04,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:24:02" (2/3) ... [2019-12-07 15:24:04,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d729386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:24:04, skipping insertion in model container [2019-12-07 15:24:04,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:24:04" (3/3) ... [2019-12-07 15:24:04,685 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2019-12-07 15:24:04,692 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:24:04,696 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:24:04,704 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:24:04,721 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:24:04,721 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:24:04,721 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:24:04,721 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:24:04,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:24:04,722 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:24:04,722 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:24:04,722 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:24:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-12-07 15:24:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:24:04,736 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:24:04,736 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:24:04,736 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:24:04,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:24:04,740 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-12-07 15:24:04,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:24:04,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012882112] [2019-12-07 15:24:04,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/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 [2019-12-07 15:24:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:24:05,040 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 15:24:05,043 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:24:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:24:05,053 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:24:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:24:05,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012882112] [2019-12-07 15:24:05,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:24:05,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 15:24:05,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771324824] [2019-12-07 15:24:05,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:24:05,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:24:05,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:24:05,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:24:05,070 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-12-07 15:24:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:24:05,085 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-12-07 15:24:05,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:24:05,086 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-12-07 15:24:05,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:24:05,095 INFO L225 Difference]: With dead ends: 104 [2019-12-07 15:24:05,096 INFO L226 Difference]: Without dead ends: 50 [2019-12-07 15:24:05,098 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:24:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-12-07 15:24:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-12-07 15:24:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 15:24:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-12-07 15:24:05,130 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-12-07 15:24:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:24:05,130 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-12-07 15:24:05,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:24:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-12-07 15:24:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:24:05,131 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:24:05,131 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:24:05,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:24:05,332 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:24:05,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:24:05,333 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-12-07 15:24:05,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:24:05,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913967575] [2019-12-07 15:24:05,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/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 [2019-12-07 15:24:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:24:05,646 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:24:05,648 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:24:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:24:05,682 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:24:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:24:05,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913967575] [2019-12-07 15:24:05,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:24:05,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:24:05,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000437187] [2019-12-07 15:24:05,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:24:05,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:24:05,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:24:05,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:24:05,712 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2019-12-07 15:24:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:24:06,832 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2019-12-07 15:24:07,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:24:07,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-12-07 15:24:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:24:07,149 INFO L225 Difference]: With dead ends: 59 [2019-12-07 15:24:07,149 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 15:24:07,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:24:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 15:24:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 15:24:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 15:24:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 15:24:07,153 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-12-07 15:24:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:24:07,153 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 15:24:07,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:24:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 15:24:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:24:07,154 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:24:07,154 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:24:07,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:24:07,356 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:24:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:24:07,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2019-12-07 15:24:07,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:24:07,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316906476] [2019-12-07 15:24:07,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 15:24:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:24:07,437 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:24:07,438 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:24:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:24:07,462 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:24:07,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:24:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:24:07,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316906476] [2019-12-07 15:24:07,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:24:07,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-12-07 15:24:07,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449528992] [2019-12-07 15:24:07,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 15:24:07,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:24:07,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:24:07,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:24:07,487 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2019-12-07 15:24:09,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:24:09,962 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-12-07 15:24:09,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:24:09,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-12-07 15:24:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:24:09,963 INFO L225 Difference]: With dead ends: 29 [2019-12-07 15:24:09,963 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 15:24:09,964 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:24:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 15:24:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-12-07 15:24:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 15:24:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-12-07 15:24:09,968 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2019-12-07 15:24:09,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:24:09,969 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-12-07 15:24:09,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 15:24:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-12-07 15:24:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 15:24:09,970 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:24:09,970 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:24:10,170 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 15:24:10,170 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:24:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:24:10,171 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2019-12-07 15:24:10,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:24:10,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643177349] [2019-12-07 15:24:10,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 15:24:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:24:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:24:11,793 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 15:24:11,793 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:24:11,994 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 15:24:12,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:24:12 BoogieIcfgContainer [2019-12-07 15:24:12,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:24:12,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:24:12,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:24:12,033 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:24:12,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:24:04" (3/4) ... [2019-12-07 15:24:12,036 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:24:12,073 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2b389c93-7066-4ad1-b756-4f1151e3ff17/bin/utaipan/witness.graphml [2019-12-07 15:24:12,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:24:12,075 INFO L168 Benchmark]: Toolchain (without parser) took 10248.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 952.4 MB in the beginning and 971.4 MB in the end (delta: -19.0 MB). Peak memory consumption was 117.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:24:12,075 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:24:12,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:24:12,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:24:12,076 INFO L168 Benchmark]: Boogie Preprocessor took 29.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:24:12,076 INFO L168 Benchmark]: RCFGBuilder took 2555.39 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: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:24:12,077 INFO L168 Benchmark]: TraceAbstraction took 7352.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.2 MB in the end (delta: 101.2 MB). Peak memory consumption was 101.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:24:12,077 INFO L168 Benchmark]: Witness Printer took 40.57 ms. Allocated memory is still 1.2 GB. Free memory was 978.2 MB in the beginning and 971.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:24:12,079 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2555.39 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: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7352.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 978.2 MB in the end (delta: 101.2 MB). Peak memory consumption was 101.2 MB. Max. memory is 11.5 GB. * Witness Printer took 40.57 ms. Allocated memory is still 1.2 GB. Free memory was 978.2 MB in the beginning and 971.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 154]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L149] double x = -0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L36] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L37] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND TRUE ix0 < 0 [L40] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L153] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L154] __VERIFIER_error() VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Result: UNSAFE, OverallTime: 7.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 95 SDslu, 37 SDs, 0 SdLazy, 29 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1306 SizeOfPredicates, 10 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! Received shutdown request...