./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e03384737e8763104139cfd338bec2bd1e3e90b2 .......................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e03384737e8763104139cfd338bec2bd1e3e90b2 ...................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:24:59,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:24:59,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:24:59,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:24:59,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:24:59,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:24:59,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:24:59,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:24:59,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:24:59,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:24:59,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:24:59,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:24:59,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:24:59,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:24:59,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:24:59,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:24:59,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:24:59,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:24:59,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:24:59,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:24:59,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:24:59,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:24:59,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:24:59,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:24:59,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:24:59,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:24:59,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:24:59,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:24:59,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:24:59,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:24:59,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:24:59,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:24:59,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:24:59,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:24:59,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:24:59,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:24:59,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:24:59,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:24:59,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:24:59,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:24:59,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:24:59,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:24:59,241 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:24:59,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:24:59,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:24:59,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:24:59,242 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:24:59,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:24:59,243 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:24:59,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:24:59,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:24:59,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:24:59,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:24:59,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:24:59,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:24:59,244 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:24:59,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:24:59,244 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:24:59,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:24:59,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:24:59,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:24:59,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:24:59,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:24:59,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:24:59,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:24:59,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:24:59,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:24:59,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:24:59,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:24:59,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:24:59,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:24:59,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> e03384737e8763104139cfd338bec2bd1e3e90b2 [2019-12-07 17:24:59,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:24:59,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:24:59,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:24:59,368 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:24:59,369 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:24:59,369 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2019-12-07 17:24:59,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data/589484230/9da2f13b6aa644be871a5bfa8dc95b65/FLAGf6f2f10e9 [2019-12-07 17:24:59,777 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:24:59,777 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/sv-benchmarks/c/floats-cbmc-regression/float5.c [2019-12-07 17:24:59,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data/589484230/9da2f13b6aa644be871a5bfa8dc95b65/FLAGf6f2f10e9 [2019-12-07 17:25:00,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data/589484230/9da2f13b6aa644be871a5bfa8dc95b65 [2019-12-07 17:25:00,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:25:00,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:25:00,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:25:00,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:25:00,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:25:00,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d9133a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00, skipping insertion in model container [2019-12-07 17:25:00,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:25:00,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:25:00,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:25:00,318 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:25:00,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:25:00,370 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:25:00,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00 WrapperNode [2019-12-07 17:25:00,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:25:00,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:25:00,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:25:00,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:25:00,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:25:00,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:25:00,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:25:00,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:25:00,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... [2019-12-07 17:25:00,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:25:00,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:25:00,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:25:00,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:25:00,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:25:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:25:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:25:00,527 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:25:00,528 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:25:00,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:25:00 BoogieIcfgContainer [2019-12-07 17:25:00,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:25:00,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:25:00,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:25:00,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:25:00,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:25:00" (1/3) ... [2019-12-07 17:25:00,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387e02f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:25:00, skipping insertion in model container [2019-12-07 17:25:00,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:00" (2/3) ... [2019-12-07 17:25:00,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387e02f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:25:00, skipping insertion in model container [2019-12-07 17:25:00,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:25:00" (3/3) ... [2019-12-07 17:25:00,533 INFO L109 eAbstractionObserver]: Analyzing ICFG float5.c [2019-12-07 17:25:00,539 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:25:00,543 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:25:00,550 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:25:00,564 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:25:00,564 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:25:00,564 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:25:00,565 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:25:00,565 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:25:00,565 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:25:00,565 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:25:00,565 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:25:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-12-07 17:25:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 17:25:00,576 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:25:00,577 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 17:25:00,577 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:25:00,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:25:00,580 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 17:25:00,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:25:00,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536111801] [2019-12-07 17:25:00,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:25:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:25:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:25:00,655 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:25:00,655 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:25:00,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:25:00 BoogieIcfgContainer [2019-12-07 17:25:00,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:25:00,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:25:00,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:25:00,665 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:25:00,666 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:25:00" (3/4) ... [2019-12-07 17:25:00,668 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:25:00,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:25:00,670 INFO L168 Benchmark]: Toolchain (without parser) took 480.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:25:00,670 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:25:00,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:00,671 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:25:00,671 INFO L168 Benchmark]: Boogie Preprocessor took 10.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:25:00,672 INFO L168 Benchmark]: RCFGBuilder took 122.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:00,672 INFO L168 Benchmark]: TraceAbstraction took 135.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:00,672 INFO L168 Benchmark]: Witness Printer took 2.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:25:00,675 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 181.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 947.8 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 122.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 135.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryDOUBLEComparisonOperation at line 8, overapproximation of someBinaryArithmeticFLOAToperation at line 10. Possible FailurePath: [L6] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L6] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L9] b=a [L10] a/=2 [L11] a*=2 [L12] COND TRUE !(a==b) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 17:25:02,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:25:02,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:25:02,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:25:02,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:25:02,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:25:02,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:25:02,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:25:02,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:25:02,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:25:02,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:25:02,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:25:02,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:25:02,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:25:02,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:25:02,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:25:02,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:25:02,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:25:02,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:25:02,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:25:02,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:25:02,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:25:02,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:25:02,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:25:02,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:25:02,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:25:02,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:25:02,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:25:02,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:25:02,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:25:02,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:25:02,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:25:02,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:25:02,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:25:02,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:25:02,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:25:02,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:25:02,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:25:02,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:25:02,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:25:02,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:25:02,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 17:25:02,052 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:25:02,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:25:02,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:25:02,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:25:02,053 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:25:02,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:25:02,054 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:25:02,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:25:02,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:25:02,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:25:02,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:25:02,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:25:02,054 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 17:25:02,055 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 17:25:02,055 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:25:02,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:25:02,055 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:25:02,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:25:02,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:25:02,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:25:02,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:25:02,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:25:02,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:25:02,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:25:02,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:25:02,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:25:02,056 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 17:25:02,056 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 17:25:02,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:25:02,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:25:02,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:25:02,057 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> e03384737e8763104139cfd338bec2bd1e3e90b2 [2019-12-07 17:25:02,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:25:02,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:25:02,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:25:02,237 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:25:02,238 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:25:02,238 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2019-12-07 17:25:02,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data/a446ab6b5/d8fbc8cf868b4a4588b0a9ee21595090/FLAG5b5e50f3f [2019-12-07 17:25:02,600 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:25:02,600 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/sv-benchmarks/c/floats-cbmc-regression/float5.c [2019-12-07 17:25:02,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data/a446ab6b5/d8fbc8cf868b4a4588b0a9ee21595090/FLAG5b5e50f3f [2019-12-07 17:25:02,613 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/data/a446ab6b5/d8fbc8cf868b4a4588b0a9ee21595090 [2019-12-07 17:25:02,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:25:02,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:25:02,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:25:02,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:25:02,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:25:02,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415fd40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02, skipping insertion in model container [2019-12-07 17:25:02,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:25:02,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:25:02,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:25:02,736 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:25:02,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:25:02,756 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:25:02,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02 WrapperNode [2019-12-07 17:25:02,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:25:02,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:25:02,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:25:02,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:25:02,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:25:02,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:25:02,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:25:02,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:25:02,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... [2019-12-07 17:25:02,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:25:02,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:25:02,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:25:02,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:25:02,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:25:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:25:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:25:03,400 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:25:03,401 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:25:03,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:25:03 BoogieIcfgContainer [2019-12-07 17:25:03,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:25:03,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:25:03,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:25:03,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:25:03,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:25:02" (1/3) ... [2019-12-07 17:25:03,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29067c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:25:03, skipping insertion in model container [2019-12-07 17:25:03,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:25:02" (2/3) ... [2019-12-07 17:25:03,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29067c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:25:03, skipping insertion in model container [2019-12-07 17:25:03,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:25:03" (3/3) ... [2019-12-07 17:25:03,406 INFO L109 eAbstractionObserver]: Analyzing ICFG float5.c [2019-12-07 17:25:03,412 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:25:03,417 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:25:03,428 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:25:03,443 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:25:03,443 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:25:03,443 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:25:03,443 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:25:03,444 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:25:03,444 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:25:03,444 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:25:03,444 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:25:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-12-07 17:25:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 17:25:03,455 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:25:03,456 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 17:25:03,456 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:25:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:25:03,460 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-12-07 17:25:03,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:25:03,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044684494] [2019-12-07 17:25:03,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 17:25:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:25:03,543 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 17:25:03,547 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:25:08,837 WARN L192 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-12-07 17:25:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:25:09,207 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:25:09,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-12-07 17:25:12,802 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| .cse0)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse0) .cse0) |v_ULTIMATE.start_main_#t~nondet1_4|)))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse1) .cse1)) |v_ULTIMATE.start_main_#t~nondet1_4|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse2) .cse2)) |v_ULTIMATE.start_main_#t~nondet1_4|))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse3) .cse3)) |v_ULTIMATE.start_main_#t~nondet1_4|))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse4) .cse4)) |v_ULTIMATE.start_main_#t~nondet1_4|)))) is different from true [2019-12-07 17:25:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:25:12,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044684494] [2019-12-07 17:25:12,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:25:12,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 17:25:12,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425115925] [2019-12-07 17:25:12,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:25:12,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:25:12,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:25:12,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2019-12-07 17:25:12,823 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 6 states. [2019-12-07 17:25:16,209 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| .cse0)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse0) .cse0) |v_ULTIMATE.start_main_#t~nondet1_4|)))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse1) .cse1)) |v_ULTIMATE.start_main_#t~nondet1_4|) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse2) .cse2)) |v_ULTIMATE.start_main_#t~nondet1_4|))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4|) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse3) .cse3)) |v_ULTIMATE.start_main_#t~nondet1_4|))) (forall ((|v_ULTIMATE.start_main_#t~nondet1_4| (_ FloatingPoint 8 24))) (or (not (fp.eq |v_ULTIMATE.start_main_#t~nondet1_4| ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet1_4| .cse4) .cse4)) |v_ULTIMATE.start_main_#t~nondet1_4|)))) is different from true [2019-12-07 17:25:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:25:16,402 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 17:25:16,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:25:16,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-12-07 17:25:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:25:16,420 INFO L225 Difference]: With dead ends: 11 [2019-12-07 17:25:16,420 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:25:16,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=12, Invalid=14, Unknown=2, NotChecked=14, Total=42 [2019-12-07 17:25:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:25:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:25:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:25:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:25:16,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-12-07 17:25:16,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:25:16,445 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:25:16,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:25:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:25:16,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:25:16,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 17:25:16,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:25:16,656 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:25:16,656 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 17:25:16,657 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:25:16,657 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:25:16,657 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-12-07 17:25:16,657 INFO L246 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2019-12-07 17:25:16,658 INFO L246 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2019-12-07 17:25:16,658 INFO L246 CegarLoopResult]: For program point L4(lines 4 13) no Hoare annotation was computed. [2019-12-07 17:25:16,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:25:16 BoogieIcfgContainer [2019-12-07 17:25:16,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:25:16,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:25:16,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:25:16,666 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:25:16,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:25:03" (3/4) ... [2019-12-07 17:25:16,672 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:25:16,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:25:16,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 17:25:16,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 17:25:16,713 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_52acf2d7-6061-4bcd-a744-c4f30b500825/bin/uautomizer/witness.graphml [2019-12-07 17:25:16,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:25:16,715 INFO L168 Benchmark]: Toolchain (without parser) took 14099.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -111.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:16,715 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:25:16,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.49 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:16,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:16,716 INFO L168 Benchmark]: Boogie Preprocessor took 14.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:16,716 INFO L168 Benchmark]: RCFGBuilder took 577.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:16,717 INFO L168 Benchmark]: TraceAbstraction took 13262.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:25:16,717 INFO L168 Benchmark]: Witness Printer took 48.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:25:16,719 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.49 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -181.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 577.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13262.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * Witness Printer took 48.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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, 8 locations, 1 error locations. Result: SAFE, OverallTime: 13.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 0.0s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 1 QuantifiedInterpolants, 465 SizeOfPredicates, 3 NumberOfNonLiveVariables, 8 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...