./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float3.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_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/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 1e66de05904ac2de77ce48b56d6931182ba71ee4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/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 1e66de05904ac2de77ce48b56d6931182ba71ee4 ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:52:28,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:52:28,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:52:29,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:52:29,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:52:29,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:52:29,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:52:29,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:52:29,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:52:29,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:52:29,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:52:29,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:52:29,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:52:29,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:52:29,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:52:29,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:52:29,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:52:29,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:52:29,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:52:29,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:52:29,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:52:29,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:52:29,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:52:29,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:52:29,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:52:29,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:52:29,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:52:29,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:52:29,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:52:29,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:52:29,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:52:29,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:52:29,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:52:29,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:52:29,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:52:29,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:52:29,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:52:29,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:52:29,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:52:29,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:52:29,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:52:29,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:52:29,254 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:52:29,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:52:29,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:52:29,257 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:52:29,258 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:52:29,258 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:52:29,258 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:52:29,259 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:52:29,259 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:52:29,259 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:52:29,261 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:52:29,261 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:52:29,262 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:52:29,262 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:52:29,262 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:52:29,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:52:29,264 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:52:29,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:52:29,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:52:29,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:52:29,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:52:29,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:52:29,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:52:29,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:52:29,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:52:29,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:52:29,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:52:29,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:52:29,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:52:29,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:52:29,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:52:29,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:52:29,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:52:29,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:52:29,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:52:29,272 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:52:29,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:52:29,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:52:29,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:52:29,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:52:29,274 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_ec1c8b0e-a214-491d-84b8-4c4c0425d917/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e66de05904ac2de77ce48b56d6931182ba71ee4 [2020-11-30 01:52:29,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:52:29,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:52:29,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:52:29,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:52:29,676 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:52:29,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float3.c [2020-11-30 01:52:29,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data/af451782a/e45c1655ece0493b9ff593ccd38ece02/FLAGdedb3c98c [2020-11-30 01:52:30,428 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:52:30,429 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/sv-benchmarks/c/floats-cbmc-regression/float3.c [2020-11-30 01:52:30,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data/af451782a/e45c1655ece0493b9ff593ccd38ece02/FLAGdedb3c98c [2020-11-30 01:52:30,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data/af451782a/e45c1655ece0493b9ff593ccd38ece02 [2020-11-30 01:52:30,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:52:30,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:52:30,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:52:30,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:52:30,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:52:30,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:52:30" (1/1) ... [2020-11-30 01:52:30,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6626452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:30, skipping insertion in model container [2020-11-30 01:52:30,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:52:30" (1/1) ... [2020-11-30 01:52:30,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:52:30,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:52:31,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:52:31,064 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:52:31,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:52:31,119 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:52:31,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31 WrapperNode [2020-11-30 01:52:31,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:52:31,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:52:31,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:52:31,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:52:31,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:52:31,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:52:31,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:52:31,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:52:31,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... [2020-11-30 01:52:31,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:52:31,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:52:31,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:52:31,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:52:31,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/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 [2020-11-30 01:52:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:52:31,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:52:31,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:52:31,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:52:31,918 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:52:31,918 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-30 01:52:31,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:31 BoogieIcfgContainer [2020-11-30 01:52:31,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:52:31,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:52:31,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:52:31,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:52:31,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:52:30" (1/3) ... [2020-11-30 01:52:31,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c214602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:52:31, skipping insertion in model container [2020-11-30 01:52:31,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:31" (2/3) ... [2020-11-30 01:52:31,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c214602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:52:31, skipping insertion in model container [2020-11-30 01:52:31,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:31" (3/3) ... [2020-11-30 01:52:31,933 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2020-11-30 01:52:31,947 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:52:31,953 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:52:31,967 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:52:32,011 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:52:32,011 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:52:32,012 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:52:32,012 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:52:32,012 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:52:32,012 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:52:32,012 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:52:32,013 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:52:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-11-30 01:52:32,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 01:52:32,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:52:32,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 01:52:32,036 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:52:32,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:52:32,047 INFO L82 PathProgramCache]: Analyzing trace with hash 59070, now seen corresponding path program 1 times [2020-11-30 01:52:32,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:52:32,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417062222] [2020-11-30 01:52:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:52:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:52:32,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:52:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:52:32,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:52:32,302 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:52:32,303 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:52:32,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:52:32,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:52:32 BoogieIcfgContainer [2020-11-30 01:52:32,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:52:32,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:52:32,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:52:32,351 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:52:32,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:31" (3/4) ... [2020-11-30 01:52:32,357 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:52:32,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:52:32,363 INFO L168 Benchmark]: Toolchain (without parser) took 1567.93 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 53.9 MB in the beginning and 60.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:32,366 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory was 58.3 MB in the beginning and 58.3 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:52:32,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.93 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 53.7 MB in the beginning and 89.5 MB in the end (delta: -35.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:32,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.12 ms. Allocated memory is still 111.1 MB. Free memory was 89.5 MB in the beginning and 88.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:52:32,372 INFO L168 Benchmark]: Boogie Preprocessor took 25.38 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 87.4 MB in the end (delta: 894.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:32,374 INFO L168 Benchmark]: RCFGBuilder took 725.77 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 73.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:32,375 INFO L168 Benchmark]: TraceAbstraction took 425.64 ms. Allocated memory is still 111.1 MB. Free memory was 72.7 MB in the beginning and 61.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:52:32,376 INFO L168 Benchmark]: Witness Printer took 6.60 ms. Allocated memory is still 111.1 MB. Free memory was 61.0 MB in the beginning and 60.7 MB in the end (delta: 314.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:52:32,392 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 86.0 MB. Free memory was 58.3 MB in the beginning and 58.3 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.93 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 53.7 MB in the beginning and 89.5 MB in the end (delta: -35.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.12 ms. Allocated memory is still 111.1 MB. Free memory was 89.5 MB in the beginning and 88.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.38 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 87.4 MB in the end (delta: 894.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 725.77 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 73.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 425.64 ms. Allocated memory is still 111.1 MB. Free memory was 72.7 MB in the beginning and 61.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.60 ms. Allocated memory is still 111.1 MB. Free memory was 61.0 MB in the beginning and 60.7 MB in the end (delta: 314.7 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 someBinaryDOUBLEComparisonOperation at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L6] double d = 0.0; [L15] int x = 2; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L10] d = 1.0 [L22] d += (x == 2) [L24] d += (x > 3) [L26] COND TRUE !(d == 2.0) [L3] __assert_fail("0", "float3.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 [2020-11-30 01:52:35,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:52:35,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:52:35,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:52:35,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:52:35,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:52:35,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:52:35,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:52:35,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:52:35,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:52:35,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:52:35,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:52:35,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:52:35,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:52:35,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:52:35,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:52:35,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:52:35,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:52:35,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:52:35,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:52:35,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:52:35,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:52:35,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:52:35,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:52:35,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:52:35,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:52:35,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:52:35,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:52:35,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:52:35,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:52:35,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:52:35,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:52:35,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:52:35,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:52:35,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:52:35,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:52:35,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:52:35,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:52:35,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:52:35,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:52:35,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:52:35,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:52:35,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:52:35,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:52:35,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:52:35,849 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:52:35,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:52:35,849 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:52:35,850 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:52:35,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:52:35,850 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:52:35,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:52:35,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:52:35,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:52:35,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:52:35,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:52:35,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:52:35,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:52:35,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:52:35,856 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:52:35,857 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:52:35,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:52:35,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:52:35,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:52:35,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:52:35,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:52:35,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:52:35,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:52:35,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:52:35,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:52:35,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:52:35,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:52:35,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:52:35,877 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:52:35,877 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:52:35,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:52:35,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:52:35,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:52:35,879 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_ec1c8b0e-a214-491d-84b8-4c4c0425d917/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e66de05904ac2de77ce48b56d6931182ba71ee4 [2020-11-30 01:52:36,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:52:36,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:52:36,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:52:36,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:52:36,412 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:52:36,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float3.c [2020-11-30 01:52:36,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data/fe58dc0c5/dc2c5d0c624c42b9a476e09f4fdccb8a/FLAG74ac9c2a4 [2020-11-30 01:52:37,137 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:52:37,138 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/sv-benchmarks/c/floats-cbmc-regression/float3.c [2020-11-30 01:52:37,144 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data/fe58dc0c5/dc2c5d0c624c42b9a476e09f4fdccb8a/FLAG74ac9c2a4 [2020-11-30 01:52:37,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/data/fe58dc0c5/dc2c5d0c624c42b9a476e09f4fdccb8a [2020-11-30 01:52:37,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:52:37,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:52:37,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:52:37,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:52:37,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:52:37,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb48b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37, skipping insertion in model container [2020-11-30 01:52:37,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:52:37,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:52:37,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:52:37,759 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:52:37,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:52:37,812 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:52:37,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37 WrapperNode [2020-11-30 01:52:37,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:52:37,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:52:37,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:52:37,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:52:37,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:52:37,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:52:37,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:52:37,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:52:37,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... [2020-11-30 01:52:37,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:52:37,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:52:37,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:52:37,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:52:37,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/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 [2020-11-30 01:52:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:52:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:52:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:52:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:52:39,208 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:52:39,208 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-30 01:52:39,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:39 BoogieIcfgContainer [2020-11-30 01:52:39,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:52:39,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:52:39,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:52:39,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:52:39,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:52:37" (1/3) ... [2020-11-30 01:52:39,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8392bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:52:39, skipping insertion in model container [2020-11-30 01:52:39,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:52:37" (2/3) ... [2020-11-30 01:52:39,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8392bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:52:39, skipping insertion in model container [2020-11-30 01:52:39,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:39" (3/3) ... [2020-11-30 01:52:39,222 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2020-11-30 01:52:39,240 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:52:39,244 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:52:39,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:52:39,303 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:52:39,303 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:52:39,303 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:52:39,304 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:52:39,304 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:52:39,304 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:52:39,304 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:52:39,304 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:52:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-30 01:52:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:52:39,324 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:52:39,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:52:39,325 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:52:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:52:39,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2020-11-30 01:52:39,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:52:39,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233590155] [2020-11-30 01:52:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/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 [2020-11-30 01:52:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:52:39,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:52:39,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:52:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:52:39,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:53:09,367 WARN L193 SmtUtils]: Spent 22.94 s on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-11-30 01:53:09,998 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 6 [2020-11-30 01:53:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:53:10,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233590155] [2020-11-30 01:53:10,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:53:10,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-11-30 01:53:10,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124030304] [2020-11-30 01:53:10,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:53:10,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:53:10,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:53:10,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:53:10,046 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 9 states. [2020-11-30 01:53:28,051 WARN L193 SmtUtils]: Spent 14.83 s on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2020-11-30 01:53:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:53:32,711 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-11-30 01:53:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:53:32,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 7 [2020-11-30 01:53:32,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:53:32,721 INFO L225 Difference]: With dead ends: 21 [2020-11-30 01:53:32,721 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:53:32,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 48.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:53:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:53:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:53:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:53:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:53:32,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-30 01:53:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:53:32,764 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:53:32,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:53:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:53:32,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:53:32,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:53:32,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:53:32,985 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:53:32,985 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:53:32,985 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:53:32,985 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:53:32,986 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-30 01:53:32,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:53:32,986 INFO L274 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-11-30 01:53:32,986 INFO L274 CegarLoopResult]: For program point L17-2(lines 17 18) no Hoare annotation was computed. [2020-11-30 01:53:32,986 INFO L274 CegarLoopResult]: For program point L13(lines 13 27) no Hoare annotation was computed. [2020-11-30 01:53:32,986 INFO L274 CegarLoopResult]: For program point L8(lines 8 11) no Hoare annotation was computed. [2020-11-30 01:53:32,987 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 01:53:32,987 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 01:53:32,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:53:32 BoogieIcfgContainer [2020-11-30 01:53:32,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:53:32,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:53:32,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:53:32,997 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:53:32,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:52:39" (3/4) ... [2020-11-30 01:53:33,002 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:53:33,018 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 01:53:33,019 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 01:53:33,019 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:53:33,020 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:53:33,076 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ec1c8b0e-a214-491d-84b8-4c4c0425d917/bin/utaipan/witness.graphml [2020-11-30 01:53:33,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:53:33,086 INFO L168 Benchmark]: Toolchain (without parser) took 55610.04 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 43.6 MB in the beginning and 38.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:33,088 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 62.9 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:53:33,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.61 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 33.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:33,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.38 ms. Allocated memory is still 62.9 MB. Free memory was 33.8 MB in the beginning and 32.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:53:33,092 INFO L168 Benchmark]: Boogie Preprocessor took 54.49 ms. Allocated memory is still 62.9 MB. Free memory was 32.3 MB in the beginning and 31.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:33,093 INFO L168 Benchmark]: RCFGBuilder took 1290.17 ms. Allocated memory is still 62.9 MB. Free memory was 31.2 MB in the beginning and 37.6 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:33,094 INFO L168 Benchmark]: TraceAbstraction took 53780.48 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 37.1 MB in the beginning and 40.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:33,094 INFO L168 Benchmark]: Witness Printer took 82.40 ms. Allocated memory is still 77.6 MB. Free memory was 40.1 MB in the beginning and 38.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:53:33,099 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 62.9 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.61 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 33.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.38 ms. Allocated memory is still 62.9 MB. Free memory was 33.8 MB in the beginning and 32.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.49 ms. Allocated memory is still 62.9 MB. Free memory was 32.3 MB in the beginning and 31.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1290.17 ms. Allocated memory is still 62.9 MB. Free memory was 31.2 MB in the beginning and 37.6 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 53780.48 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 37.1 MB in the beginning and 40.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Witness Printer took 82.40 ms. Allocated memory is still 77.6 MB. Free memory was 40.1 MB in the beginning and 38.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 53.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 22.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 23 SDslu, 13 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 48.2s 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 30.2s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 750 SizeOfPredicates, 3 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 5 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 correct! Received shutdown request...