./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/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 8f5b02e58995f52dca6597ad4ab9c04cae63d27d ................................................................................................................................................................................................................................................ 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_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/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 8f5b02e58995f52dca6597ad4ab9c04cae63d27d ............................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:38:14,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:14,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:15,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:15,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:15,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:15,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:15,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:15,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:15,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:15,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:15,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:15,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:15,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:15,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:15,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:15,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:15,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:15,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:15,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:15,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:15,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:15,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:15,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:15,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:15,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:15,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:15,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:15,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:15,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:15,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:15,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:15,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:15,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:15,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:15,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:15,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:15,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:15,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:15,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:15,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:15,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:38:15,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:15,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:15,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:15,123 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:15,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:15,123 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:15,123 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:15,124 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:15,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:15,124 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:15,124 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:15,124 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:15,125 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:15,125 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:15,125 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:15,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:15,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:15,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:15,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:15,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:15,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:15,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:15,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:15,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:15,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:15,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:15,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:15,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:15,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:15,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:15,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:15,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:15,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:15,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:15,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:15,130 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:15,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:15,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:15,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:15,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:15,131 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_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f5b02e58995f52dca6597ad4ab9c04cae63d27d [2020-11-28 07:38:15,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:15,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:15,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:15,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:15,412 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:15,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2020-11-28 07:38:15,494 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data/81a59a34d/9f8f50400532415da2cbb847dc887e2a/FLAGce34a5ec0 [2020-11-28 07:38:15,942 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:15,942 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2020-11-28 07:38:15,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data/81a59a34d/9f8f50400532415da2cbb847dc887e2a/FLAGce34a5ec0 [2020-11-28 07:38:16,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data/81a59a34d/9f8f50400532415da2cbb847dc887e2a [2020-11-28 07:38:16,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:16,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:16,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:16,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:16,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:16,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db07079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16, skipping insertion in model container [2020-11-28 07:38:16,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:16,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:16,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:16,625 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:16,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:16,667 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:16,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16 WrapperNode [2020-11-28 07:38:16,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:16,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:16,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:16,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:16,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:16,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:16,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:16,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:16,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... [2020-11-28 07:38:16,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:16,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:16,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:16,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:16,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/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 [2020-11-28 07:38:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:17,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:17,120 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:38:17,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:17 BoogieIcfgContainer [2020-11-28 07:38:17,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:17,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:17,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:17,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:17,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:16" (1/3) ... [2020-11-28 07:38:17,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d628ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:17, skipping insertion in model container [2020-11-28 07:38:17,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:16" (2/3) ... [2020-11-28 07:38:17,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d628ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:17, skipping insertion in model container [2020-11-28 07:38:17,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:17" (3/3) ... [2020-11-28 07:38:17,146 INFO L111 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2020-11-28 07:38:17,158 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:17,187 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:38:17,202 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:38:17,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:17,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:17,248 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:17,248 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:17,248 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:17,248 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:17,249 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:17,249 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-28 07:38:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 07:38:17,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:17,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 07:38:17,268 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:17,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:17,275 INFO L82 PathProgramCache]: Analyzing trace with hash 60929, now seen corresponding path program 1 times [2020-11-28 07:38:17,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:17,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362302896] [2020-11-28 07:38:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:17,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:17,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:17,537 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:38:17,538 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:38:17,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:38:17,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:17 BoogieIcfgContainer [2020-11-28 07:38:17,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:17,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:17,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:17,569 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:17,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:17" (3/4) ... [2020-11-28 07:38:17,573 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:38:17,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:17,577 INFO L168 Benchmark]: Toolchain (without parser) took 1241.95 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.8 MB in the beginning and 87.4 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:17,578 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:17,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.79 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 71.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:17,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.96 ms. Allocated memory is still 94.4 MB. Free memory was 71.1 MB in the beginning and 69.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:17,583 INFO L168 Benchmark]: Boogie Preprocessor took 39.03 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 68.7 MB in the end (delta: 979.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:17,585 INFO L168 Benchmark]: RCFGBuilder took 370.56 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 54.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:17,586 INFO L168 Benchmark]: TraceAbstraction took 441.99 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.7 MB in the beginning and 87.9 MB in the end (delta: -34.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:17,587 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 87.4 MB in the end (delta: 549.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:17,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.79 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 71.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.96 ms. Allocated memory is still 94.4 MB. Free memory was 71.1 MB in the beginning and 69.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.03 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 68.7 MB in the end (delta: 979.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 370.56 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 54.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 441.99 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.7 MB in the beginning and 87.9 MB in the end (delta: -34.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.44 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 87.4 MB in the end (delta: 549.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L21] y = x*x - 4.f [L11] COND TRUE !(cond) [L3] __assert_fail("0", "float_int_inv_square.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=6occurred 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, 3 NumberOfCodeBlocks, 3 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-a4ecdab [2020-11-28 07:38:20,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:20,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:20,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:20,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:20,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:20,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:20,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:20,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:20,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:20,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:20,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:20,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:20,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:20,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:20,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:20,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:20,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:20,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:20,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:20,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:20,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:20,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:20,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:20,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:20,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:20,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:20,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:20,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:20,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:20,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:20,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:20,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:20,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:20,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:20,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:20,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:20,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:20,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:20,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:20,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:20,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:38:20,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:20,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:20,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:20,329 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:20,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:20,330 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:20,330 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:20,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:20,330 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:20,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:20,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:20,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:20,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:20,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:20,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:20,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:20,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:20,335 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:38:20,335 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:38:20,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:20,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:20,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:20,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:20,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:20,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:38:20,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:20,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:20,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:20,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:20,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:20,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:20,338 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:38:20,338 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:38:20,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:20,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:20,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:20,339 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_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f5b02e58995f52dca6597ad4ab9c04cae63d27d [2020-11-28 07:38:20,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:20,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:20,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:20,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:20,766 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:20,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2020-11-28 07:38:20,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data/f49757469/be789408d55e400fbe190ac7f5a6f001/FLAGe2460508d [2020-11-28 07:38:21,335 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:21,336 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2020-11-28 07:38:21,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data/f49757469/be789408d55e400fbe190ac7f5a6f001/FLAGe2460508d [2020-11-28 07:38:21,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/data/f49757469/be789408d55e400fbe190ac7f5a6f001 [2020-11-28 07:38:21,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:21,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:21,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:21,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:21,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:21,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:21,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d19ab04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21, skipping insertion in model container [2020-11-28 07:38:21,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:21,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:21,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:21,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:21,955 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:21,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:21,986 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:21,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21 WrapperNode [2020-11-28 07:38:21,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:21,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:21,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:21,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:21,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:22,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:22,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:22,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:22,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... [2020-11-28 07:38:22,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:22,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:22,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:22,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:22,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/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 [2020-11-28 07:38:22,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:38:22,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:22,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:22,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:23,472 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:23,472 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:38:23,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:23 BoogieIcfgContainer [2020-11-28 07:38:23,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:23,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:23,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:23,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:23,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:21" (1/3) ... [2020-11-28 07:38:23,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c2c47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:23, skipping insertion in model container [2020-11-28 07:38:23,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:21" (2/3) ... [2020-11-28 07:38:23,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c2c47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:23, skipping insertion in model container [2020-11-28 07:38:23,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:23" (3/3) ... [2020-11-28 07:38:23,493 INFO L111 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2020-11-28 07:38:23,519 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:23,523 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:38:23,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:38:23,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:23,581 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:23,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:23,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:23,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:23,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:23,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:23,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 07:38:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:38:23,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:23,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:38:23,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2020-11-28 07:38:23,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:23,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720974217] [2020-11-28 07:38:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/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 [2020-11-28 07:38:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:23,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:38:23,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:23,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:38:23,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720974217] [2020-11-28 07:38:23,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:23,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:38:23,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278230670] [2020-11-28 07:38:23,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:38:23,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:38:23,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:38:23,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:38:23,861 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2020-11-28 07:38:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:23,877 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-11-28 07:38:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:38:23,879 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 07:38:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:23,898 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:38:23,898 INFO L226 Difference]: Without dead ends: 7 [2020-11-28 07:38:23,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:38:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-28 07:38:23,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-28 07:38:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 07:38:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-11-28 07:38:23,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-11-28 07:38:23,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:23,946 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-11-28 07:38:23,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:38:23,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-11-28 07:38:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:38:23,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:23,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:38:24,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:38:24,172 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:24,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:24,173 INFO L82 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2020-11-28 07:38:24,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:24,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950677684] [2020-11-28 07:38:24,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/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 [2020-11-28 07:38:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:24,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:24,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:24,425 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:38:24,425 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:38:24,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:38:24,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:24 BoogieIcfgContainer [2020-11-28 07:38:24,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:24,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:24,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:24,654 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:24,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:23" (3/4) ... [2020-11-28 07:38:24,657 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:38:24,691 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3fd1c310-ca07-47b4-a7aa-fdc07b4a90a0/bin/utaipan/witness.graphml [2020-11-28 07:38:24,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:24,694 INFO L168 Benchmark]: Toolchain (without parser) took 2989.33 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.5 MB in the beginning and 42.9 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:24,694 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:24,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.73 ms. Allocated memory is still 52.4 MB. Free memory was 29.3 MB in the beginning and 19.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:24,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.01 ms. Allocated memory is still 52.4 MB. Free memory was 19.3 MB in the beginning and 35.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:24,697 INFO L168 Benchmark]: Boogie Preprocessor took 86.20 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 35.5 MB in the beginning and 45.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:24,697 INFO L168 Benchmark]: RCFGBuilder took 1351.52 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 34.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:24,698 INFO L168 Benchmark]: TraceAbstraction took 1166.91 ms. Allocated memory is still 62.9 MB. Free memory was 33.7 MB in the beginning and 44.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:24,699 INFO L168 Benchmark]: Witness Printer took 38.08 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 42.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:24,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.73 ms. Allocated memory is still 52.4 MB. Free memory was 29.3 MB in the beginning and 19.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.01 ms. Allocated memory is still 52.4 MB. Free memory was 19.3 MB in the beginning and 35.5 MB in the end (delta: -16.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.20 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 35.5 MB in the beginning and 45.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1351.52 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 34.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1166.91 ms. Allocated memory is still 62.9 MB. Free memory was 33.7 MB in the beginning and 44.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 38.08 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 42.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L21] y = x*x - 4.f [L11] COND TRUE !(cond) [L3] __assert_fail("0", "float_int_inv_square.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 31 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...