./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4353b03ed39dd917d13c7cd6163e83d6972334fc ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4353b03ed39dd917d13c7cd6163e83d6972334fc .................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:57:24,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:57:24,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:57:24,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:57:24,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:57:24,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:57:24,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:57:24,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:57:24,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:57:24,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:57:24,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:57:24,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:57:24,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:57:24,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:57:24,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:57:24,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:57:24,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:57:24,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:57:24,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:57:24,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:57:24,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:57:24,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:57:24,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:57:24,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:57:24,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:57:24,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:57:24,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:57:24,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:57:24,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:57:24,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:57:24,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:57:24,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:57:24,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:57:24,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:57:24,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:57:24,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:57:24,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:57:24,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:57:24,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:57:24,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:57:24,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:57:24,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 21:57:24,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:57:24,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:57:24,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:57:24,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:57:24,291 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:57:24,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:57:24,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:57:24,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 21:57:24,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:57:24,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:57:24,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:57:24,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:57:24,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:57:24,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:57:24,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:57:24,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:57:24,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:57:24,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:57:24,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:57:24,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:57:24,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:57:24,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:57:24,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:57:24,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:57:24,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:57:24,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 21:57:24,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 21:57:24,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:57:24,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:57:24,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-10-24 21:57:24,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:57:24,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:57:24,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:57:24,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:57:24,738 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:57:24,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-24 21:57:24,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1d1302f/3fce12a5c9a54948ade67e2761c9b3a7/FLAG93faab15f [2020-10-24 21:57:25,542 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:57:25,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-24 21:57:25,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1d1302f/3fce12a5c9a54948ade67e2761c9b3a7/FLAG93faab15f [2020-10-24 21:57:25,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1d1302f/3fce12a5c9a54948ade67e2761c9b3a7 [2020-10-24 21:57:25,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:57:25,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:57:25,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:25,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:57:25,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:57:25,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:25" (1/1) ... [2020-10-24 21:57:25,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29603243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:25, skipping insertion in model container [2020-10-24 21:57:25,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:25" (1/1) ... [2020-10-24 21:57:25,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:57:25,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:57:26,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:26,170 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:57:26,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:26,206 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:57:26,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26 WrapperNode [2020-10-24 21:57:26,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:26,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:26,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:57:26,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:57:26,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:26,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:57:26,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:57:26,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:57:26,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2020-10-24 21:57:26,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:57:26,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:57:26,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:57:26,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:57:26,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 21:57:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:57:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:57:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 21:57:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:57:26,615 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:57:26,616 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-24 21:57:26,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:26 BoogieIcfgContainer [2020-10-24 21:57:26,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:57:26,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:57:26,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:57:26,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:57:26,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:25" (1/3) ... [2020-10-24 21:57:26,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6ecc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:26, skipping insertion in model container [2020-10-24 21:57:26,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (2/3) ... [2020-10-24 21:57:26,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6ecc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:26, skipping insertion in model container [2020-10-24 21:57:26,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:26" (3/3) ... [2020-10-24 21:57:26,631 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-24 21:57:26,645 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:57:26,651 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:57:26,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:57:26,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:57:26,708 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:57:26,708 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:57:26,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:57:26,709 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:57:26,709 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:57:26,710 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:57:26,710 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:57:26,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-24 21:57:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 21:57:26,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:26,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 21:57:26,741 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:26,749 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-10-24 21:57:26,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:57:26,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928173732] [2020-10-24 21:57:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:57:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:57:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:26,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928173732] [2020-10-24 21:57:26,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:57:26,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 21:57:26,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594279712] [2020-10-24 21:57:26,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:57:26,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 21:57:26,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:57:26,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:57:26,954 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-10-24 21:57:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:57:26,969 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-24 21:57:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:57:26,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-24 21:57:26,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:57:26,980 INFO L225 Difference]: With dead ends: 18 [2020-10-24 21:57:26,981 INFO L226 Difference]: Without dead ends: 7 [2020-10-24 21:57:26,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:57:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-24 21:57:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-24 21:57:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-24 21:57:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-24 21:57:27,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-24 21:57:27,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:57:27,024 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-24 21:57:27,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:57:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-24 21:57:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 21:57:27,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:27,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 21:57:27,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 21:57:27,026 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:27,027 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-10-24 21:57:27,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:57:27,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114537058] [2020-10-24 21:57:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:57:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:57:27,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:57:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:57:27,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:57:27,093 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 21:57:27,094 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:57:27,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 21:57:27,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:27 BoogieIcfgContainer [2020-10-24 21:57:27,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:57:27,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:57:27,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:57:27,123 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:57:27,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:26" (3/4) ... [2020-10-24 21:57:27,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 21:57:27,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:57:27,131 INFO L168 Benchmark]: Toolchain (without parser) took 1211.05 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 24.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:27,133 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 44.0 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:27,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.60 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 22.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:27,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.29 ms. Allocated memory is still 44.0 MB. Free memory was 22.3 MB in the beginning and 21.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:27,136 INFO L168 Benchmark]: Boogie Preprocessor took 25.73 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 20.1 MB in the end (delta: 893.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:27,137 INFO L168 Benchmark]: RCFGBuilder took 341.93 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.1 MB in the beginning and 30.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:27,138 INFO L168 Benchmark]: TraceAbstraction took 500.69 ms. Allocated memory is still 54.5 MB. Free memory was 29.7 MB in the beginning and 24.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 21:57:27,139 INFO L168 Benchmark]: Witness Printer took 5.95 ms. Allocated memory is still 54.5 MB. Free memory was 24.7 MB in the beginning and 24.4 MB in the end (delta: 261.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:57:27,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 44.0 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.60 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 22.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.29 ms. Allocated memory is still 44.0 MB. Free memory was 22.3 MB in the beginning and 21.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.73 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 20.1 MB in the end (delta: 893.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 341.93 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.1 MB in the beginning and 30.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 500.69 ms. Allocated memory is still 54.5 MB. Free memory was 29.7 MB in the beginning and 24.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.95 ms. Allocated memory is still 54.5 MB. Free memory was 24.7 MB in the beginning and 24.4 MB in the end (delta: 261.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L10] COND FALSE !(!(a==1 || a==0.5 || a==2 || a==3 || a==0.1)) [L11] b=a [L12] a/=2 [L13] a*=2 [L14] COND TRUE !(a==b) [L4] __assert_fail("0", "float5.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2020-10-24 21:57:29,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:57:29,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:57:29,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:57:29,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:57:29,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:57:29,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:57:29,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:57:29,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:57:29,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:57:29,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:57:29,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:57:29,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:57:29,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:57:29,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:57:29,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:57:29,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:57:29,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:57:29,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:57:29,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:57:29,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:57:29,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:57:29,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:57:29,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:57:29,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:57:29,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:57:29,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:57:29,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:57:29,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:57:29,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:57:29,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:57:29,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:57:29,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:57:29,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:57:29,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:57:29,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:57:29,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:57:29,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:57:29,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:57:29,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:57:29,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:57:29,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 21:57:29,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:57:29,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:57:29,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:57:29,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:57:29,877 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:57:29,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:57:29,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:57:29,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:57:29,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:57:29,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:57:29,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:57:29,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:57:29,881 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 21:57:29,881 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 21:57:29,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:57:29,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:57:29,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:57:29,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:57:29,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:57:29,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:57:29,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:57:29,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:57:29,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:57:29,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:57:29,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:57:29,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:57:29,886 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 21:57:29,886 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 21:57:29,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:57:29,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:57:29,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 21:57:29,888 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-10-24 21:57:30,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:57:30,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:57:30,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:57:30,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:57:30,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:57:30,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-24 21:57:30,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98974838f/f6730045eb154ed7856d7ca0e4ed630e/FLAG75b73ed7b [2020-10-24 21:57:31,100 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:57:31,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-24 21:57:31,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98974838f/f6730045eb154ed7856d7ca0e4ed630e/FLAG75b73ed7b [2020-10-24 21:57:31,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98974838f/f6730045eb154ed7856d7ca0e4ed630e [2020-10-24 21:57:31,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:57:31,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:57:31,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:31,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:57:31,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:57:31,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76206ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31, skipping insertion in model container [2020-10-24 21:57:31,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:57:31,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:57:31,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:31,779 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:57:31,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:57:31,815 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:57:31,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31 WrapperNode [2020-10-24 21:57:31,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:57:31,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:31,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:57:31,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:57:31,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:57:31,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:57:31,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:57:31,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:57:31,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... [2020-10-24 21:57:31,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:57:31,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:57:31,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:57:31,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:57:31,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 21:57:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:57:31,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:57:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 21:57:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:57:32,413 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:57:32,413 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-24 21:57:32,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:32 BoogieIcfgContainer [2020-10-24 21:57:32,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:57:32,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:57:32,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:57:32,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:57:32,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:31" (1/3) ... [2020-10-24 21:57:32,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec28be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:32, skipping insertion in model container [2020-10-24 21:57:32,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:31" (2/3) ... [2020-10-24 21:57:32,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec28be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:32, skipping insertion in model container [2020-10-24 21:57:32,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:32" (3/3) ... [2020-10-24 21:57:32,425 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-24 21:57:32,438 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:57:32,443 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:57:32,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:57:32,482 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:57:32,482 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:57:32,483 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:57:32,483 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:57:32,483 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:57:32,483 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:57:32,484 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:57:32,484 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:57:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-24 21:57:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 21:57:32,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:32,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 21:57:32,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:32,509 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-10-24 21:57:32,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:57:32,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219320685] [2020-10-24 21:57:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 21:57:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:57:32,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 21:57:32,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:57:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:32,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:57:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:32,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219320685] [2020-10-24 21:57:32,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:57:32,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 21:57:32,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093360631] [2020-10-24 21:57:32,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:57:32,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:57:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:57:32,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:57:32,745 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-10-24 21:57:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:57:32,759 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-24 21:57:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:57:32,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-24 21:57:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:57:32,771 INFO L225 Difference]: With dead ends: 18 [2020-10-24 21:57:32,772 INFO L226 Difference]: Without dead ends: 7 [2020-10-24 21:57:32,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:57:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-24 21:57:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-24 21:57:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-24 21:57:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-24 21:57:32,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-24 21:57:32,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:57:32,829 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-24 21:57:32,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:57:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-24 21:57:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 21:57:32,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:57:32,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 21:57:33,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 21:57:33,037 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:57:33,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:57:33,039 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-10-24 21:57:33,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:57:33,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299893751] [2020-10-24 21:57:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 21:57:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:57:33,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 21:57:33,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:57:34,298 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2020-10-24 21:57:39,247 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification that was a NOOP. DAG size: 21 [2020-10-24 21:57:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:39,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:57:45,300 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-24 21:57:45,311 INFO L603 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-10-24 21:57:48,956 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse1) .cse1)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse2) .cse2)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq ULTIMATE.start_main_~a~0 .cse3)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse3) .cse3) ULTIMATE.start_main_~a~0)))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse4) .cse4)) ULTIMATE.start_main_~a~0)))) is different from true [2020-10-24 21:57:52,359 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (forall ((v_prenex_1 (_ 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_prenex_1 .cse1) .cse1)) v_prenex_1) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_1) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))))) (forall ((v_prenex_3 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq v_prenex_3 .cse2)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_3 .cse2) .cse2) v_prenex_3)))) (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_2 .cse3) .cse3)) v_prenex_2) (not (fp.eq v_prenex_2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))))) (forall ((v_prenex_4 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_4) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_4 .cse4) .cse4)) v_prenex_4)))) is different from true [2020-10-24 21:57:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:57:52,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299893751] [2020-10-24 21:57:52,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:57:52,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2020-10-24 21:57:52,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716038393] [2020-10-24 21:57:52,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 21:57:52,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:57:52,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 21:57:52,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2020-10-24 21:57:52,369 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 9 states. [2020-10-24 21:57:56,919 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_prenex_1 (_ 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_prenex_1 .cse1) .cse1)) v_prenex_1) (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_1) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))))) (forall ((v_prenex_3 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq v_prenex_3 .cse2)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_3 .cse2) .cse2) v_prenex_3)))) (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (fp.eq (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_2 .cse3) .cse3)) v_prenex_2) (not (fp.eq v_prenex_2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))))) (forall ((v_prenex_4 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode v_prenex_4) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode v_prenex_4 .cse4) .cse4)) v_prenex_4)))) is different from true [2020-10-24 21:58:00,801 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv3 32)))) (fp.eq (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse0) .cse0)) ULTIMATE.start_main_~a~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10.0)))) (fp.eq (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse1) .cse1)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ULTIMATE.start_main_~a~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.eq (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse2) .cse2)) ULTIMATE.start_main_~a~0))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (or (not (fp.eq ULTIMATE.start_main_~a~0 .cse3)) (fp.eq (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse3) .cse3) ULTIMATE.start_main_~a~0)))) (forall ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 8 24))) (or (not (fp.eq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.eq (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~a~0 .cse4) .cse4)) ULTIMATE.start_main_~a~0)))) is different from true [2020-10-24 21:58:10,768 WARN L193 SmtUtils]: Spent 8.01 s on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-10-24 21:58:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:58:10,769 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-10-24 21:58:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 21:58:10,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2020-10-24 21:58:10,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:58:10,770 INFO L225 Difference]: With dead ends: 7 [2020-10-24 21:58:10,770 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 21:58:10,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=30, Invalid=38, Unknown=4, NotChecked=60, Total=132 [2020-10-24 21:58:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 21:58:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 21:58:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 21:58:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 21:58:10,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-10-24 21:58:10,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:58:10,773 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 21:58:10,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 21:58:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 21:58:10,773 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 21:58:10,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 21:58:10,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 21:58:10,989 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 21:58:10,989 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 21:58:10,989 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 21:58:10,989 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 21:58:10,990 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-24 21:58:10,990 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-24 21:58:10,990 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-24 21:58:10,990 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-10-24 21:58:10,990 INFO L274 CegarLoopResult]: For program point L6(lines 6 15) no Hoare annotation was computed. [2020-10-24 21:58:10,990 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-24 21:58:10,991 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-10-24 21:58:10,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:58:10 BoogieIcfgContainer [2020-10-24 21:58:10,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:58:10,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:58:10,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:58:10,997 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:58:10,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:32" (3/4) ... [2020-10-24 21:58:11,001 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 21:58:11,013 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-24 21:58:11,013 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 21:58:11,013 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-24 21:58:11,013 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 21:58:11,056 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 21:58:11,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:58:11,058 INFO L168 Benchmark]: Toolchain (without parser) took 39566.78 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 25.4 MB in the beginning and 37.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-10-24 21:58:11,059 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 48.2 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:58:11,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.84 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 26.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:58:11,061 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 48.2 MB. Free memory was 26.3 MB in the beginning and 25.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:58:11,062 INFO L168 Benchmark]: Boogie Preprocessor took 29.14 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:58:11,063 INFO L168 Benchmark]: RCFGBuilder took 525.69 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 23.7 MB in the beginning and 45.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:58:11,063 INFO L168 Benchmark]: TraceAbstraction took 38578.88 ms. Allocated memory is still 69.2 MB. Free memory was 45.0 MB in the beginning and 39.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-24 21:58:11,064 INFO L168 Benchmark]: Witness Printer took 59.39 ms. Allocated memory is still 69.2 MB. Free memory was 39.9 MB in the beginning and 37.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:58:11,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 48.2 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.84 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 26.3 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 48.2 MB. Free memory was 26.3 MB in the beginning and 25.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.14 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 525.69 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 23.7 MB in the beginning and 45.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38578.88 ms. Allocated memory is still 69.2 MB. Free memory was 45.0 MB in the beginning and 39.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Witness Printer took 59.39 ms. Allocated memory is still 69.2 MB. Free memory was 39.9 MB in the beginning and 37.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 38.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 18.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 35.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 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, 19.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 2 QuantifiedInterpolants, 1590 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...