./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18a7fa5d929aa4f94783ce4ac14d173e66069fd4 ......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18a7fa5d929aa4f94783ce4ac14d173e66069fd4 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:12:42,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:12:42,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:12:42,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:12:42,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:12:42,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:12:42,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:12:42,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:12:42,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:12:42,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:12:42,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:12:42,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:12:42,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:12:42,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:12:42,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:12:42,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:12:42,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:12:42,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:12:42,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:12:42,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:12:42,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:12:42,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:12:42,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:12:42,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:12:42,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:12:42,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:12:42,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:12:42,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:12:42,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:12:42,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:12:42,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:12:42,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:12:42,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:12:42,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:12:42,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:12:42,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:12:42,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:12:42,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:12:42,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:12:42,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:12:42,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:12:42,911 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:12:42,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:12:42,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:12:42,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:12:42,934 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:12:42,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:12:42,934 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:12:42,934 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:12:42,934 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:12:42,935 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:12:42,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:12:42,935 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:12:42,935 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:12:42,935 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:12:42,936 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:12:42,936 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:12:42,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:12:42,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:12:42,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:12:42,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:12:42,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:12:42,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:12:42,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:12:42,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:12:42,938 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:12:42,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:12:42,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:12:42,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:12:42,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:12:42,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:12:42,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:12:42,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:12:42,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:12:42,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:12:42,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:12:42,940 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:12:42,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:12:42,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:12:42,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:12:42,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:12:42,940 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18a7fa5d929aa4f94783ce4ac14d173e66069fd4 [2020-12-09 12:12:43,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:12:43,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:12:43,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:12:43,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:12:43,138 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:12:43,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2020-12-09 12:12:43,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data/639c12736/f84a45162a934eb6b423df8a1d42e4ab/FLAGca24917d8 [2020-12-09 12:12:43,557 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:12:43,557 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2020-12-09 12:12:43,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data/639c12736/f84a45162a934eb6b423df8a1d42e4ab/FLAGca24917d8 [2020-12-09 12:12:43,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data/639c12736/f84a45162a934eb6b423df8a1d42e4ab [2020-12-09 12:12:43,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:12:43,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:12:43,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:12:43,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:12:43,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:12:43,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b16a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43, skipping insertion in model container [2020-12-09 12:12:43,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:12:43,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:12:43,738 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2020-12-09 12:12:43,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:12:43,752 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:12:43,767 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2020-12-09 12:12:43,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:12:43,778 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:12:43,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43 WrapperNode [2020-12-09 12:12:43,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:12:43,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:12:43,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:12:43,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:12:43,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:12:43,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:12:43,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:12:43,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:12:43,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... [2020-12-09 12:12:43,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:12:43,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:12:43,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:12:43,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:12:43,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/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 [2020-12-09 12:12:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:12:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:12:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 12:12:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 12:12:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 12:12:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:12:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:12:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 12:12:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:12:44,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:12:44,100 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 12:12:44,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:12:44 BoogieIcfgContainer [2020-12-09 12:12:44,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:12:44,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:12:44,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:12:44,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:12:44,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:12:43" (1/3) ... [2020-12-09 12:12:44,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac68080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:12:44, skipping insertion in model container [2020-12-09 12:12:44,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:43" (2/3) ... [2020-12-09 12:12:44,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac68080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:12:44, skipping insertion in model container [2020-12-09 12:12:44,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:12:44" (3/3) ... [2020-12-09 12:12:44,110 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2020-12-09 12:12:44,123 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:12:44,125 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:12:44,135 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:12:44,157 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:12:44,158 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:12:44,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:12:44,158 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:12:44,158 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:12:44,158 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:12:44,158 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:12:44,158 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:12:44,171 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 12:12:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 12:12:44,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:12:44,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:12:44,177 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:12:44,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:12:44,182 INFO L82 PathProgramCache]: Analyzing trace with hash 179408343, now seen corresponding path program 1 times [2020-12-09 12:12:44,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:12:44,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099633128] [2020-12-09 12:12:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:12:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:12:44,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:12:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:12:44,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:12:44,336 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 12:12:44,337 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:12:44,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:12:44,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:12:44 BoogieIcfgContainer [2020-12-09 12:12:44,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:12:44,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:12:44,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:12:44,366 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:12:44,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:12:44" (3/4) ... [2020-12-09 12:12:44,369 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 12:12:44,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:12:44,370 INFO L168 Benchmark]: Toolchain (without parser) took 795.28 ms. Allocated memory is still 104.9 MB. Free memory was 66.4 MB in the beginning and 47.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:12:44,371 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 104.9 MB. Free memory was 82.5 MB in the beginning and 82.5 MB in the end (delta: 78.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:12:44,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.38 ms. Allocated memory is still 104.9 MB. Free memory was 66.2 MB in the beginning and 80.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:12:44,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.76 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 79.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:12:44,373 INFO L168 Benchmark]: Boogie Preprocessor took 15.92 ms. Allocated memory is still 104.9 MB. Free memory was 79.2 MB in the beginning and 78.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:12:44,373 INFO L168 Benchmark]: RCFGBuilder took 282.17 ms. Allocated memory is still 104.9 MB. Free memory was 77.7 MB in the beginning and 62.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:12:44,374 INFO L168 Benchmark]: TraceAbstraction took 261.73 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 47.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:12:44,374 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 104.9 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:12:44,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 104.9 MB. Free memory was 82.5 MB in the beginning and 82.5 MB in the end (delta: 78.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 203.38 ms. Allocated memory is still 104.9 MB. Free memory was 66.2 MB in the beginning and 80.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.76 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 79.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.92 ms. Allocated memory is still 104.9 MB. Free memory was 79.2 MB in the beginning and 78.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 282.17 ms. Allocated memory is still 104.9 MB. Free memory was 77.7 MB in the beginning and 62.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 261.73 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 47.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 2.99 ms. Allocated memory is still 104.9 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L1] int __return_main; [L17] float __return_72; [L18] int __return_87; [L21] float main__a; [L22] float main__r; [L23] main__a = __VERIFIER_nondet_float() [L24] int main____CPAchecker_TMP_0; VAL [__return_72=0, __return_87=0, __return_main=0] [L25] COND TRUE main__a >= 0.10000000149011612 VAL [__return_72=0, __return_87=0, __return_main=0] [L27] COND TRUE main__a <= 100.0 [L29] main____CPAchecker_TMP_0 = 1 VAL [__return_72=0, __return_87=0, __return_main=0] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] float __tmp_1; [L34] __tmp_1 = main__a [L35] float InvSqrt__x; [L36] InvSqrt__x = __tmp_1 [L37] float InvSqrt__xhalf = 0.5 * InvSqrt__x; [L38] union float_int InvSqrt__i; [L39] InvSqrt__i.f = InvSqrt__x [L40] EXPR InvSqrt__i.i [L40] InvSqrt__i.i = 1597463007 - ((InvSqrt__i.i) >> 1) [L41] EXPR InvSqrt__i.f [L41] InvSqrt__x = InvSqrt__i.f [L42] InvSqrt__x = InvSqrt__x * (1.5 - ((InvSqrt__xhalf * InvSqrt__x) * InvSqrt__x)) [L43] __return_72 = InvSqrt__x [L44] main__r = __return_72 [L45] int main____CPAchecker_TMP_1; VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L46] COND FALSE !(main__r >= 0.0) VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L72] main____CPAchecker_TMP_1 = 0 VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L53] int __tmp_2; [L54] __tmp_2 = main____CPAchecker_TMP_1 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_2 VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L59] reach_error() VAL [__return_72=1597463008, __return_87=0, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:12:45,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:12:45,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:12:46,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:12:46,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:12:46,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:12:46,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:12:46,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:12:46,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:12:46,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:12:46,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:12:46,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:12:46,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:12:46,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:12:46,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:12:46,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:12:46,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:12:46,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:12:46,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:12:46,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:12:46,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:12:46,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:12:46,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:12:46,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:12:46,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:12:46,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:12:46,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:12:46,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:12:46,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:12:46,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:12:46,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:12:46,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:12:46,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:12:46,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:12:46,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:12:46,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:12:46,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:12:46,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:12:46,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:12:46,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:12:46,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:12:46,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 12:12:46,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:12:46,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:12:46,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:12:46,094 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:12:46,094 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:12:46,094 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:12:46,094 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:12:46,094 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:12:46,095 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:12:46,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:12:46,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:12:46,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:12:46,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:12:46,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:12:46,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:12:46,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:12:46,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:12:46,097 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:12:46,097 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:12:46,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:12:46,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:12:46,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:12:46,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:12:46,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:12:46,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:12:46,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:12:46,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:12:46,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:12:46,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:12:46,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:12:46,100 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:12:46,100 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:12:46,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:12:46,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:12:46,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:12:46,101 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18a7fa5d929aa4f94783ce4ac14d173e66069fd4 [2020-12-09 12:12:46,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:12:46,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:12:46,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:12:46,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:12:46,346 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:12:46,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2020-12-09 12:12:46,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data/b9374f01d/3c315c5ee8674a0f8a2647fc0ec64812/FLAG5e8913ccb [2020-12-09 12:12:46,771 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:12:46,771 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2020-12-09 12:12:46,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data/b9374f01d/3c315c5ee8674a0f8a2647fc0ec64812/FLAG5e8913ccb [2020-12-09 12:12:46,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/bin/utaipan/data/b9374f01d/3c315c5ee8674a0f8a2647fc0ec64812 [2020-12-09 12:12:46,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:12:46,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:12:46,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:12:46,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:12:46,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:12:46,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:46,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55979c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46, skipping insertion in model container [2020-12-09 12:12:46,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:46,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:12:46,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:12:46,926 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2020-12-09 12:12:46,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:12:46,949 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:12:46,973 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2020-12-09 12:12:46,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:12:46,993 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:12:46,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46 WrapperNode [2020-12-09 12:12:46,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:12:46,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:12:46,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:12:46,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:12:47,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:12:47,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:12:47,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:12:47,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:12:47,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... [2020-12-09 12:12:47,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:12:47,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:12:47,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:12:47,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:12:47,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/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 [2020-12-09 12:12:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 12:12:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:12:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 12:12:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 12:12:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:12:47,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:12:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 12:12:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:12:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 12:12:50,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:12:50,089 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 12:12:50,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:12:50 BoogieIcfgContainer [2020-12-09 12:12:50,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:12:50,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:12:50,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:12:50,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:12:50,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:12:46" (1/3) ... [2020-12-09 12:12:50,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7c4e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:12:50, skipping insertion in model container [2020-12-09 12:12:50,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:12:46" (2/3) ... [2020-12-09 12:12:50,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7c4e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:12:50, skipping insertion in model container [2020-12-09 12:12:50,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:12:50" (3/3) ... [2020-12-09 12:12:50,096 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2020-12-09 12:12:50,105 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:12:50,107 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:12:50,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:12:50,130 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:12:50,131 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:12:50,131 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:12:50,131 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:12:50,131 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:12:50,131 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:12:50,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:12:50,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:12:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-09 12:12:50,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 12:12:50,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:12:50,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:12:50,143 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:12:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:12:50,147 INFO L82 PathProgramCache]: Analyzing trace with hash -2137295023, now seen corresponding path program 1 times [2020-12-09 12:12:50,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:12:50,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743169313] [2020-12-09 12:12:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/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 [2020-12-09 12:12:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:12:51,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 12:12:51,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:12:52,614 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-12-09 12:12:53,730 WARN L197 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-09 12:12:55,846 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))) (= c_ULTIMATE.start_main_~main__r~0 ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse1) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))))))) is different from false [2020-12-09 12:13:02,152 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (and (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0)) (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53)))))) is different from false [2020-12-09 12:13:04,228 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|))))) (and (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0)) (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53)))))) is different from true [2020-12-09 12:13:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:13:16,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:13:16,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743169313] [2020-12-09 12:13:16,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:13:16,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 12:13:16,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170526051] [2020-12-09 12:13:16,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 12:13:16,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:13:16,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 12:13:16,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=11, Unknown=3, NotChecked=14, Total=42 [2020-12-09 12:13:16,889 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 7 states. [2020-12-09 12:13:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:13:21,120 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-09 12:13:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 12:13:21,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-09 12:13:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:13:21,132 INFO L225 Difference]: With dead ends: 32 [2020-12-09 12:13:21,132 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 12:13:21,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=14, Invalid=11, Unknown=3, NotChecked=14, Total=42 [2020-12-09 12:13:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 12:13:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 12:13:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 12:13:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 12:13:21,153 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-12-09 12:13:21,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:13:21,154 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 12:13:21,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 12:13:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 12:13:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 12:13:21,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:13:21,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:13:21,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:13:21,356 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:13:21,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:13:21,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2140661612, now seen corresponding path program 1 times [2020-12-09 12:13:21,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:13:21,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329986301] [2020-12-09 12:13:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/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 [2020-12-09 12:13:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:13:21,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 12:13:21,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:13:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:13:21,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:13:21,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329986301] [2020-12-09 12:13:21,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:13:21,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:13:21,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472721572] [2020-12-09 12:13:21,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:13:21,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:13:21,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:13:21,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:13:21,892 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-12-09 12:13:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:13:24,393 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-12-09 12:13:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:13:24,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 12:13:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:13:24,394 INFO L225 Difference]: With dead ends: 16 [2020-12-09 12:13:24,394 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 12:13:24,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:13:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 12:13:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 12:13:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 12:13:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-09 12:13:24,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2020-12-09 12:13:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:13:24,398 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-09 12:13:24,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:13:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-09 12:13:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 12:13:24,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:13:24,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:13:24,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 12:13:24,600 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:13:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:13:24,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1946484073, now seen corresponding path program 1 times [2020-12-09 12:13:24,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:13:24,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911141959] [2020-12-09 12:13:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1acdcdbc-63c4-4d16-b4fb-ffbd3613c0f8/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 [2020-12-09 12:13:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:13:26,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 12:13:26,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:13:26,913 WARN L197 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-12-09 12:13:28,480 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 12 [2020-12-09 12:13:30,581 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (= c_ULTIMATE.start_main_~main__r~0 ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse1)) .cse0) .cse0))))))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))))) is different from false [2020-12-09 12:13:32,700 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__r~0) (_ +zero 11 53)) (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (= c_ULTIMATE.start_main_~main__r~0 ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse1)) .cse0) .cse0))))))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))))) is different from false [2020-12-09 12:13:39,184 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse2 (let ((.cse3 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse2) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse1)) .cse2) .cse2))))))))) (and (fp.geq .cse0 (_ +zero 11 53)) (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 100.0)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.geq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))))))) is different from false [2020-12-09 12:13:41,258 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse2 (let ((.cse3 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse2) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse1)) .cse2) .cse2))))))))) (and (fp.geq .cse0 (_ +zero 11 53)) (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 100.0)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.geq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))))))) is different from true [2020-12-09 12:13:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:13:53,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:13:53,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911141959] [2020-12-09 12:13:53,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:13:53,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 12:13:53,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494491509] [2020-12-09 12:13:53,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 12:13:53,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:13:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 12:13:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=12, Unknown=4, NotChecked=24, Total=56 [2020-12-09 12:13:53,923 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 8 states. [2020-12-09 12:13:56,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:13:56,654 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-09 12:13:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 12:13:56,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-09 12:13:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:13:56,775 INFO L225 Difference]: With dead ends: 12 [2020-12-09 12:13:56,775 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:13:56,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=16, Invalid=12, Unknown=4, NotChecked=24, Total=56 [2020-12-09 12:13:56,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:13:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:13:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:13:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:13:56,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 12:13:56,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:13:56,776 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:13:56,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 12:13:56,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:13:56,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:13:56,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 12:13:56,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:14:14,614 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-12-09 12:14:14,615 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeCFGHoareAnnotation(BasicCegarLoop.java:1052) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 34 more [2020-12-09 12:14:14,618 INFO L168 Benchmark]: Toolchain (without parser) took 87828.02 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 53.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:14:14,618 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:14:14,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.97 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 49.5 MB in the end (delta: 360.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:14:14,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.76 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 47.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:14:14,619 INFO L168 Benchmark]: Boogie Preprocessor took 20.31 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 46.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:14:14,620 INFO L168 Benchmark]: RCFGBuilder took 3047.04 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 46.3 MB in the beginning and 67.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-12-09 12:14:14,620 INFO L168 Benchmark]: TraceAbstraction took 84524.93 ms. Allocated memory is still 86.0 MB. Free memory was 67.1 MB in the beginning and 53.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:14:14,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 67.1 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 203.97 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 49.5 MB in the end (delta: 360.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.76 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 47.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.31 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 46.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 3047.04 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 46.3 MB in the beginning and 67.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 84524.93 ms. Allocated memory is still 86.0 MB. Free memory was 67.1 MB in the beginning and 53.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...