./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.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_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/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 c6d763742402f5574758af03df7d1953644b4c87 .................................................................................................................................................................................................................................................................................................................... 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_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/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 c6d763742402f5574758af03df7d1953644b4c87 .............................................................................................................................................................................................................................................................................................................................. 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 19:24:37,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:24:37,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:24:37,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:24:37,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:24:37,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:24:37,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:24:37,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:24:37,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:24:37,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:24:37,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:24:37,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:24:37,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:24:37,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:24:37,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:24:37,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:24:37,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:24:37,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:24:37,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:24:37,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:24:37,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:24:37,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:24:37,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:24:37,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:24:37,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:24:37,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:24:37,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:24:37,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:24:37,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:24:38,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:24:38,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:24:38,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:24:38,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:24:38,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:24:38,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:24:38,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:24:38,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:24:38,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:24:38,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:24:38,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:24:38,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:24:38,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:24:38,018 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:24:38,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:24:38,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:24:38,019 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:24:38,020 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:24:38,020 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:24:38,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:24:38,020 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:24:38,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:24:38,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:24:38,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:24:38,021 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:24:38,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:24:38,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:24:38,021 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:24:38,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:24:38,022 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:24:38,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:24:38,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:24:38,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:24:38,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:24:38,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:24:38,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:24:38,023 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:24:38,024 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:24:38,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:24:38,024 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:24:38,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:24:38,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:24:38,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:24:38,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:24:38,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:24:38,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:24:38,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:24:38,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:24:38,026 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:24:38,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:24:38,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:24:38,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:24:38,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:24:38,027 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_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/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 -> c6d763742402f5574758af03df7d1953644b4c87 [2019-12-07 19:24:38,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:24:38,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:24:38,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:24:38,148 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:24:38,148 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:24:38,148 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2019-12-07 19:24:38,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data/02d0c39ec/eed778c29a0541eea85b9c5a2a1c2930/FLAG43a22d686 [2019-12-07 19:24:38,504 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:24:38,505 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2019-12-07 19:24:38,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data/02d0c39ec/eed778c29a0541eea85b9c5a2a1c2930/FLAG43a22d686 [2019-12-07 19:24:38,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data/02d0c39ec/eed778c29a0541eea85b9c5a2a1c2930 [2019-12-07 19:24:38,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:24:38,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:24:38,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:24:38,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:24:38,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:24:38,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2b2671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38, skipping insertion in model container [2019-12-07 19:24:38,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:24:38,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:24:38,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:24:38,718 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:24:38,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:24:38,767 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:24:38,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38 WrapperNode [2019-12-07 19:24:38,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:24:38,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:24:38,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:24:38,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:24:38,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:24:38,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:24:38,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:24:38,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:24:38,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... [2019-12-07 19:24:38,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:24:38,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:24:38,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:24:38,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:24:38,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/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 19:24:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:24:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 19:24:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 19:24:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 19:24:38,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:24:38,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:24:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 19:24:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-07 19:24:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:24:39,279 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:24:39,279 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 19:24:39,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:24:39 BoogieIcfgContainer [2019-12-07 19:24:39,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:24:39,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:24:39,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:24:39,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:24:39,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:24:38" (1/3) ... [2019-12-07 19:24:39,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14eeca54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:24:39, skipping insertion in model container [2019-12-07 19:24:39,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:38" (2/3) ... [2019-12-07 19:24:39,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14eeca54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:24:39, skipping insertion in model container [2019-12-07 19:24:39,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:24:39" (3/3) ... [2019-12-07 19:24:39,286 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2019-12-07 19:24:39,292 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:24:39,297 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:24:39,305 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:24:39,320 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:24:39,320 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:24:39,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:24:39,321 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:24:39,321 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:24:39,321 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:24:39,321 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:24:39,321 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:24:39,331 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-12-07 19:24:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:24:39,336 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:24:39,336 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:24:39,337 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:24:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:24:39,340 INFO L82 PathProgramCache]: Analyzing trace with hash 705259280, now seen corresponding path program 1 times [2019-12-07 19:24:39,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:24:39,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134194856] [2019-12-07 19:24:39,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:24:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:24:39,428 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 19:24:39,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134194856] [2019-12-07 19:24:39,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:24:39,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:24:39,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061317500] [2019-12-07 19:24:39,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 19:24:39,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:24:39,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 19:24:39,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 19:24:39,442 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-12-07 19:24:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:24:39,458 INFO L93 Difference]: Finished difference Result 87 states and 147 transitions. [2019-12-07 19:24:39,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 19:24:39,459 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 19:24:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:24:39,466 INFO L225 Difference]: With dead ends: 87 [2019-12-07 19:24:39,466 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 19:24:39,469 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 19:24:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 19:24:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-12-07 19:24:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 19:24:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2019-12-07 19:24:39,494 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 11 [2019-12-07 19:24:39,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:24:39,494 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2019-12-07 19:24:39,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 19:24:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2019-12-07 19:24:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 19:24:39,495 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:24:39,495 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:24:39,495 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:24:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:24:39,495 INFO L82 PathProgramCache]: Analyzing trace with hash 828069228, now seen corresponding path program 1 times [2019-12-07 19:24:39,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:24:39,495 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183429620] [2019-12-07 19:24:39,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:24:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:24:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:24:39,632 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 19:24:39,633 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:24:39,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:24:39 BoogieIcfgContainer [2019-12-07 19:24:39,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:24:39,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:24:39,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:24:39,660 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:24:39,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:24:39" (3/4) ... [2019-12-07 19:24:39,663 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 19:24:39,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:24:39,665 INFO L168 Benchmark]: Toolchain (without parser) took 1144.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 942.5 MB in the beginning and 986.8 MB in the end (delta: -44.4 MB). Peak memory consumption was 47.9 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:39,665 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:24:39,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -138.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:39,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.30 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 19:24:39,666 INFO L168 Benchmark]: Boogie Preprocessor took 28.82 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 19:24:39,667 INFO L168 Benchmark]: RCFGBuilder took 447.12 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: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:39,667 INFO L168 Benchmark]: TraceAbstraction took 378.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 986.8 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:39,668 INFO L168 Benchmark]: Witness Printer took 3.16 ms. Allocated memory is still 1.1 GB. Free memory is still 986.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:24:39,670 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -138.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.30 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 28.82 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. * RCFGBuilder took 447.12 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: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 378.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 986.8 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.16 ms. Allocated memory is still 1.1 GB. Free memory is still 986.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L161] __int32_t hx; VAL [one_fmod=1, Zero_fmod={3:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] COND TRUE isfinite_double(x) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={3:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 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=44occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 19:24:41,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:24:41,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:24:41,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:24:41,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:24:41,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:24:41,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:24:41,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:24:41,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:24:41,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:24:41,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:24:41,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:24:41,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:24:41,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:24:41,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:24:41,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:24:41,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:24:41,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:24:41,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:24:41,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:24:41,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:24:41,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:24:41,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:24:41,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:24:41,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:24:41,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:24:41,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:24:41,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:24:41,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:24:41,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:24:41,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:24:41,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:24:41,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:24:41,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:24:41,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:24:41,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:24:41,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:24:41,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:24:41,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:24:41,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:24:41,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:24:41,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 19:24:41,044 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:24:41,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:24:41,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:24:41,045 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:24:41,045 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:24:41,046 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:24:41,046 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:24:41,046 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:24:41,046 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:24:41,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:24:41,047 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:24:41,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:24:41,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:24:41,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:24:41,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:24:41,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:24:41,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:24:41,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 19:24:41,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 19:24:41,048 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:24:41,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:24:41,048 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:24:41,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:24:41,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:24:41,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 19:24:41,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:24:41,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:24:41,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:24:41,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:24:41,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:24:41,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:24:41,049 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 19:24:41,049 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 19:24:41,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:24:41,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:24:41,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:24:41,050 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_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/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 -> c6d763742402f5574758af03df7d1953644b4c87 [2019-12-07 19:24:41,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:24:41,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:24:41,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:24:41,231 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:24:41,231 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:24:41,232 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2019-12-07 19:24:41,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data/8c2f6424e/4a36dd49e8014c4d8a75ffbefa131e94/FLAGbe4adff57 [2019-12-07 19:24:41,702 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:24:41,702 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2019-12-07 19:24:41,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data/8c2f6424e/4a36dd49e8014c4d8a75ffbefa131e94/FLAGbe4adff57 [2019-12-07 19:24:41,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/data/8c2f6424e/4a36dd49e8014c4d8a75ffbefa131e94 [2019-12-07 19:24:41,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:24:41,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:24:41,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:24:41,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:24:41,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:24:41,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:41,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b70e7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41, skipping insertion in model container [2019-12-07 19:24:41,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:41,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:24:41,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:24:41,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:24:41,909 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:24:41,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:24:41,992 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:24:41,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41 WrapperNode [2019-12-07 19:24:41,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:24:41,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:24:41,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:24:41,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:24:41,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:24:42,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:24:42,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:24:42,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:24:42,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... [2019-12-07 19:24:42,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:24:42,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:24:42,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:24:42,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:24:42,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/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 19:24:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 19:24:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 19:24:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:24:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-07 19:24:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 19:24:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:24:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:24:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 19:24:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:24:45,343 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:24:45,343 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 19:24:45,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:24:45 BoogieIcfgContainer [2019-12-07 19:24:45,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:24:45,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:24:45,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:24:45,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:24:45,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:24:41" (1/3) ... [2019-12-07 19:24:45,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bac1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:24:45, skipping insertion in model container [2019-12-07 19:24:45,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:24:41" (2/3) ... [2019-12-07 19:24:45,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bac1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:24:45, skipping insertion in model container [2019-12-07 19:24:45,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:24:45" (3/3) ... [2019-12-07 19:24:45,349 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2019-12-07 19:24:45,356 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:24:45,360 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:24:45,368 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:24:45,383 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:24:45,383 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:24:45,383 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:24:45,383 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:24:45,384 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:24:45,384 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:24:45,384 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:24:45,384 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:24:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-12-07 19:24:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 19:24:45,397 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:24:45,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:24:45,398 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:24:45,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:24:45,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-12-07 19:24:45,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:24:45,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471690631] [2019-12-07 19:24:45,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/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 19:24:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:24:46,248 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 19:24:46,252 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:24:46,262 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 19:24:46,262 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:24:46,265 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 19:24:46,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471690631] [2019-12-07 19:24:46,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:24:46,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 19:24:46,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406190181] [2019-12-07 19:24:46,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 19:24:46,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:24:46,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 19:24:46,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 19:24:46,284 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-12-07 19:24:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:24:46,305 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-12-07 19:24:46,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 19:24:46,307 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 19:24:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:24:46,314 INFO L225 Difference]: With dead ends: 118 [2019-12-07 19:24:46,314 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 19:24:46,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 19:24:46,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 19:24:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-07 19:24:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 19:24:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-12-07 19:24:46,341 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-12-07 19:24:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:24:46,342 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-12-07 19:24:46,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 19:24:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-12-07 19:24:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 19:24:46,342 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:24:46,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:24:46,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 19:24:46,544 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:24:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:24:46,544 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-12-07 19:24:46,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:24:46,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155899548] [2019-12-07 19:24:46,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/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 19:24:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:24:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:24:48,875 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 19:24:48,875 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:24:49,077 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 19:24:49,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:24:49 BoogieIcfgContainer [2019-12-07 19:24:49,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:24:49,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:24:49,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:24:49,122 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:24:49,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:24:45" (3/4) ... [2019-12-07 19:24:49,124 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 19:24:49,160 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_baea1e58-bd6d-41ce-bfb5-e08d1d47b2ae/bin/utaipan/witness.graphml [2019-12-07 19:24:49,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:24:49,161 INFO L168 Benchmark]: Toolchain (without parser) took 7441.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -51.6 MB). Peak memory consumption was 80.5 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:49,161 INFO L168 Benchmark]: CDTParser took 0.16 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 19:24:49,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:49,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.64 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:49,162 INFO L168 Benchmark]: Boogie Preprocessor took 31.64 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 19:24:49,163 INFO L168 Benchmark]: RCFGBuilder took 3285.05 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: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:49,163 INFO L168 Benchmark]: TraceAbstraction took 3776.01 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: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:49,163 INFO L168 Benchmark]: Witness Printer took 38.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:24:49,165 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 272.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.64 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.64 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 3285.05 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: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3776.01 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: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 11.5 GB. * Witness Printer took 38.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 186]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L161] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L180] COND TRUE isfinite_double(x) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L186] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 1.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...