./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float2.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_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/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 069e404bf7b01a351383c4004538ba52022db96a .............................................................................................................................................................................................................................................. 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_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/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 069e404bf7b01a351383c4004538ba52022db96a ............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:57:14,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:57:14,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:57:14,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:57:14,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:57:14,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:57:14,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:57:14,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:57:14,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:57:14,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:57:14,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:57:14,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:57:14,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:57:14,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:57:14,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:57:14,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:57:14,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:57:14,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:57:14,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:57:14,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:57:14,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:57:14,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:57:14,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:57:14,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:57:14,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:57:14,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:57:14,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:57:14,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:57:14,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:57:14,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:57:14,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:57:14,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:57:14,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:57:14,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:57:14,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:57:14,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:57:14,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:57:14,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:57:14,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:57:14,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:57:14,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:57:14,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:57:14,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:57:14,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:57:14,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:57:14,397 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:57:14,398 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:57:14,398 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:57:14,398 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:57:14,398 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:57:14,399 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:57:14,399 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:57:14,400 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:57:14,400 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:57:14,400 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:57:14,401 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:57:14,401 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:57:14,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:57:14,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:57:14,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:57:14,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:57:14,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:57:14,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:57:14,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:57:14,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:57:14,404 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:57:14,404 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:57:14,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:57:14,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:57:14,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:57:14,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:57:14,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:57:14,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:57:14,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:57:14,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:57:14,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:57:14,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:57:14,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:57:14,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:57:14,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:57:14,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:57:14,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:57:14,409 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_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2020-11-30 01:57:14,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:57:14,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:57:14,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:57:14,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:57:14,765 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:57:14,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-11-30 01:57:14,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data/b4ae1d52f/e328b06cabc04904bb14e274be581cea/FLAG180d9b863 [2020-11-30 01:57:15,401 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:57:15,402 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-11-30 01:57:15,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data/b4ae1d52f/e328b06cabc04904bb14e274be581cea/FLAG180d9b863 [2020-11-30 01:57:15,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data/b4ae1d52f/e328b06cabc04904bb14e274be581cea [2020-11-30 01:57:15,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:57:15,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:57:15,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:57:15,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:57:15,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:57:15,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:57:15" (1/1) ... [2020-11-30 01:57:15,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237351df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:15, skipping insertion in model container [2020-11-30 01:57:15,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:57:15" (1/1) ... [2020-11-30 01:57:15,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:57:15,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:57:15,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:57:15,996 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:57:16,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:57:16,024 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:57:16,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16 WrapperNode [2020-11-30 01:57:16,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:57:16,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:57:16,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:57:16,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:57:16,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:57:16,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:57:16,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:57:16,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:57:16,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... [2020-11-30 01:57:16,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:57:16,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:57:16,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:57:16,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:57:16,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/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 01:57:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:57:16,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:57:16,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:57:16,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:57:16,614 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:57:16,614 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 01:57:16,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:57:16 BoogieIcfgContainer [2020-11-30 01:57:16,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:57:16,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:57:16,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:57:16,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:57:16,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:57:15" (1/3) ... [2020-11-30 01:57:16,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d11e837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:57:16, skipping insertion in model container [2020-11-30 01:57:16,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:16" (2/3) ... [2020-11-30 01:57:16,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d11e837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:57:16, skipping insertion in model container [2020-11-30 01:57:16,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:57:16" (3/3) ... [2020-11-30 01:57:16,626 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-11-30 01:57:16,637 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:57:16,641 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 01:57:16,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 01:57:16,689 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:57:16,690 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:57:16,690 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:57:16,690 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:57:16,690 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:57:16,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:57:16,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:57:16,691 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:57:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 01:57:16,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 01:57:16,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:16,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 01:57:16,712 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:57:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:16,723 INFO L82 PathProgramCache]: Analyzing trace with hash 76080, now seen corresponding path program 1 times [2020-11-30 01:57:16,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:57:16,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61563734] [2020-11-30 01:57:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:57:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:57:16,851 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:57:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:57:16,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:57:16,908 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:57:16,909 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:57:16,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:57:16,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:57:16 BoogieIcfgContainer [2020-11-30 01:57:16,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:57:16,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:57:16,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:57:16,934 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:57:16,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:57:16" (3/4) ... [2020-11-30 01:57:16,937 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:57:16,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:57:16,941 INFO L168 Benchmark]: Toolchain (without parser) took 1165.44 ms. Allocated memory is still 98.6 MB. Free memory was 57.5 MB in the beginning and 56.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:16,943 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 73.4 MB in the end (delta: 127.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:57:16,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.73 ms. Allocated memory is still 98.6 MB. Free memory was 57.3 MB in the beginning and 74.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:16,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.15 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:57:16,949 INFO L168 Benchmark]: Boogie Preprocessor took 20.04 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.5 MB in the end (delta: 912.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:16,950 INFO L168 Benchmark]: RCFGBuilder took 537.21 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 68.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:16,951 INFO L168 Benchmark]: TraceAbstraction took 313.59 ms. Allocated memory is still 98.6 MB. Free memory was 68.1 MB in the beginning and 56.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:16,953 INFO L168 Benchmark]: Witness Printer took 4.46 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 56.1 MB in the end (delta: 354.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:57:16,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 73.4 MB in the end (delta: 127.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.73 ms. Allocated memory is still 98.6 MB. Free memory was 57.3 MB in the beginning and 74.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.15 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.04 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.5 MB in the end (delta: 912.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 537.21 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 68.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 313.59 ms. Allocated memory is still 98.6 MB. Free memory was 68.1 MB in the beginning and 56.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.46 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 56.1 MB in the end (delta: 354.5 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 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L3] __assert_fail("0", "float2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 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=18occurred 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 01:57:19,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:57:19,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:57:19,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:57:19,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:57:19,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:57:19,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:57:19,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:57:19,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:57:19,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:57:19,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:57:19,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:57:19,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:57:19,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:57:19,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:57:19,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:57:19,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:57:19,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:57:19,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:57:19,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:57:19,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:57:19,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:57:19,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:57:19,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:57:19,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:57:19,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:57:19,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:57:19,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:57:19,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:57:19,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:57:19,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:57:19,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:57:19,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:57:19,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:57:19,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:57:19,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:57:19,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:57:19,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:57:19,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:57:19,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:57:19,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:57:19,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:57:19,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:57:19,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:57:19,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:57:19,681 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:57:19,682 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:57:19,682 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:57:19,682 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:57:19,682 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:57:19,683 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:57:19,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:57:19,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:57:19,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:57:19,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:57:19,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:57:19,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:57:19,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:57:19,686 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:57:19,686 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:57:19,686 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:57:19,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:57:19,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:57:19,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:57:19,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:57:19,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:57:19,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:57:19,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:57:19,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:57:19,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:57:19,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:57:19,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:57:19,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:57:19,690 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:57:19,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:57:19,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:57:19,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:57:19,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:57:19,691 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_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2020-11-30 01:57:20,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:57:20,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:57:20,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:57:20,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:57:20,108 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:57:20,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-11-30 01:57:20,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data/effc5b88b/6847f25bfebd439aae8a1004d85c28ec/FLAG72a55efe7 [2020-11-30 01:57:20,624 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:57:20,625 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/sv-benchmarks/c/floats-cbmc-regression/float2.c [2020-11-30 01:57:20,631 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data/effc5b88b/6847f25bfebd439aae8a1004d85c28ec/FLAG72a55efe7 [2020-11-30 01:57:21,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/data/effc5b88b/6847f25bfebd439aae8a1004d85c28ec [2020-11-30 01:57:21,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:57:21,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:57:21,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:57:21,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:57:21,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:57:21,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462c46ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21, skipping insertion in model container [2020-11-30 01:57:21,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:57:21,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:57:21,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:57:21,232 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:57:21,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:57:21,273 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:57:21,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21 WrapperNode [2020-11-30 01:57:21,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:57:21,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:57:21,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:57:21,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:57:21,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:57:21,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:57:21,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:57:21,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:57:21,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... [2020-11-30 01:57:21,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:57:21,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:57:21,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:57:21,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:57:21,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/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 01:57:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:57:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:57:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:57:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:57:22,082 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:57:22,082 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 01:57:22,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:57:22 BoogieIcfgContainer [2020-11-30 01:57:22,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:57:22,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:57:22,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:57:22,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:57:22,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:57:21" (1/3) ... [2020-11-30 01:57:22,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3532f19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:57:22, skipping insertion in model container [2020-11-30 01:57:22,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:57:21" (2/3) ... [2020-11-30 01:57:22,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3532f19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:57:22, skipping insertion in model container [2020-11-30 01:57:22,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:57:22" (3/3) ... [2020-11-30 01:57:22,114 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-11-30 01:57:22,131 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:57:22,136 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 01:57:22,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 01:57:22,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:57:22,181 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:57:22,181 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:57:22,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:57:22,181 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:57:22,181 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:57:22,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:57:22,182 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:57:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-30 01:57:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 01:57:22,199 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:22,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 01:57:22,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:57:22,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:22,207 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-30 01:57:22,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:57:22,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828354232] [2020-11-30 01:57:22,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/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 01:57:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:22,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:57:22,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:57:22,427 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 01:57:22,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:57:22,706 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 01:57:22,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828354232] [2020-11-30 01:57:22,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:57:22,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 01:57:22,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321024707] [2020-11-30 01:57:22,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:57:22,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:57:22,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:57:22,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:57:22,734 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-11-30 01:57:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:22,876 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-11-30 01:57:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:57:22,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 01:57:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:22,899 INFO L225 Difference]: With dead ends: 39 [2020-11-30 01:57:22,899 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 01:57:22,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:57:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 01:57:22,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 01:57:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 01:57:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-30 01:57:22,942 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2020-11-30 01:57:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:22,943 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-30 01:57:22,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:57:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-30 01:57:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:57:22,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:22,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:57:23,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:57:23,161 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:57:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-11-30 01:57:23,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:57:23,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367719350] [2020-11-30 01:57:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/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 [2020-11-30 01:57:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:23,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:57:23,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:57:23,252 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 01:57:23,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:57:23,265 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 01:57:23,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367719350] [2020-11-30 01:57:23,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:57:23,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 01:57:23,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614368726] [2020-11-30 01:57:23,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:57:23,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:57:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:57:23,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:57:23,269 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 3 states. [2020-11-30 01:57:23,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:23,369 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-11-30 01:57:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:57:23,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 01:57:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:23,371 INFO L225 Difference]: With dead ends: 15 [2020-11-30 01:57:23,371 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 01:57:23,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:57:23,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 01:57:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 01:57:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 01:57:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-11-30 01:57:23,375 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2020-11-30 01:57:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:23,376 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-11-30 01:57:23,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:57:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-11-30 01:57:23,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:57:23,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:23,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:57:23,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:57:23,578 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:57:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:23,579 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-11-30 01:57:23,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:57:23,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848192516] [2020-11-30 01:57:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:57:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:23,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:57:23,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:57:23,716 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 01:57:23,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:57:23,729 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 01:57:23,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848192516] [2020-11-30 01:57:23,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:57:23,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 01:57:23,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311036353] [2020-11-30 01:57:23,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:57:23,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:57:23,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:57:23,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:57:23,732 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 3 states. [2020-11-30 01:57:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:23,896 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-11-30 01:57:23,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:57:23,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 01:57:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:23,897 INFO L225 Difference]: With dead ends: 13 [2020-11-30 01:57:23,897 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 01:57:23,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:57:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 01:57:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 01:57:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 01:57:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-11-30 01:57:23,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-11-30 01:57:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:23,900 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-11-30 01:57:23,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:57:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-11-30 01:57:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:57:23,901 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:57:23,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:57:24,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:57:24,112 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:57:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:57:24,113 INFO L82 PathProgramCache]: Analyzing trace with hash 179821258, now seen corresponding path program 1 times [2020-11-30 01:57:24,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:57:24,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184726803] [2020-11-30 01:57:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 01:57:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:57:24,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:57:24,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:57:24,199 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 01:57:24,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:57:24,214 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 01:57:24,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184726803] [2020-11-30 01:57:24,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:57:24,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 01:57:24,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748947301] [2020-11-30 01:57:24,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:57:24,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:57:24,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:57:24,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:57:24,217 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2020-11-30 01:57:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:57:24,368 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-11-30 01:57:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:57:24,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-30 01:57:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:57:24,370 INFO L225 Difference]: With dead ends: 11 [2020-11-30 01:57:24,370 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:57:24,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:57:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:57:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:57:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:57:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:57:24,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-30 01:57:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:57:24,372 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:57:24,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:57:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:57:24,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:57:24,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:57:24,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:57:24,586 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:57:24,587 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,587 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-30 01:57:24,587 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,587 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-30 01:57:24,587 INFO L274 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-11-30 01:57:24,587 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-30 01:57:24,588 INFO L274 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-11-30 01:57:24,588 INFO L274 CegarLoopResult]: For program point L5(lines 5 24) no Hoare annotation was computed. [2020-11-30 01:57:24,588 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,588 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,588 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,588 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,588 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:57:24,589 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,589 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,589 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:57:24,589 INFO L274 CegarLoopResult]: For program point L3-6(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,589 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:57:24,589 INFO L274 CegarLoopResult]: For program point L3-7(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,589 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,590 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:57:24,590 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 01:57:24,590 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 01:57:24,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:57:24 BoogieIcfgContainer [2020-11-30 01:57:24,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:57:24,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:57:24,597 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:57:24,597 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:57:24,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:57:22" (3/4) ... [2020-11-30 01:57:24,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:57:24,613 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 01:57:24,614 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:57:24,614 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 01:57:24,614 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:57:24,652 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ed456d6c-4e7a-4ccf-a1f4-e431c23e24b3/bin/utaipan/witness.graphml [2020-11-30 01:57:24,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:57:24,654 INFO L168 Benchmark]: Toolchain (without parser) took 3628.52 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.6 MB in the beginning and 36.7 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:24,655 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 38.6 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:57:24,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.43 ms. Allocated memory is still 56.6 MB. Free memory was 35.4 MB in the beginning and 25.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:24,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.47 ms. Allocated memory is still 56.6 MB. Free memory was 25.7 MB in the beginning and 39.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:24,656 INFO L168 Benchmark]: Boogie Preprocessor took 50.82 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 38.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:57:24,657 INFO L168 Benchmark]: RCFGBuilder took 679.23 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 26.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:24,657 INFO L168 Benchmark]: TraceAbstraction took 2507.13 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 26.4 MB in the beginning and 39.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:24,660 INFO L168 Benchmark]: Witness Printer took 55.32 ms. Allocated memory is still 71.3 MB. Free memory was 39.2 MB in the beginning and 36.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:57:24,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 38.6 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.43 ms. Allocated memory is still 56.6 MB. Free memory was 35.4 MB in the beginning and 25.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.47 ms. Allocated memory is still 56.6 MB. Free memory was 25.7 MB in the beginning and 39.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.82 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 38.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 679.23 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 26.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2507.13 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 26.4 MB in the beginning and 39.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 55.32 ms. Allocated memory is still 71.3 MB. Free memory was 39.2 MB in the beginning and 36.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - 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 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 14 SDslu, 5 SDs, 0 SdLazy, 37 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 4 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 8 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...