./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 54858612 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 0.2.0-5485861 [2020-10-25 21:35:24,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:35:24,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:35:24,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:35:24,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:35:24,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:35:24,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:35:24,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:35:24,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:35:24,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:35:24,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:35:24,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:35:24,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:35:24,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:35:24,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:35:24,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:35:24,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:35:24,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:35:24,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:35:24,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:35:24,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:35:24,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:35:24,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:35:24,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:35:24,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:35:24,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:35:24,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:35:24,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:35:24,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:35:24,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:35:24,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:35:24,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:35:24,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:35:24,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:35:24,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:35:24,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:35:24,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:35:24,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:35:24,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:35:24,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:35:24,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:35:24,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:35:24,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:35:24,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:35:24,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:35:24,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:35:24,516 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:35:24,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:35:24,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:35:24,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:35:24,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:35:24,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:35:24,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:35:24,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:35:24,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:35:24,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:35:24,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:35:24,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:35:24,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:35:24,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:35:24,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:35:24,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:35:24,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:35:24,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:35:24,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:35:24,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:35:24,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:35:24,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:35:24,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:35:24,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:35:24,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:35:24,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-10-25 21:35:24,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:35:24,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:35:25,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:35:25,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:35:25,005 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:35:25,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-25 21:35:25,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20d026f0/11ab66bbd82c478eaf679116090b0331/FLAG6dc8b9c06 [2020-10-25 21:35:25,857 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:35:25,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-25 21:35:25,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20d026f0/11ab66bbd82c478eaf679116090b0331/FLAG6dc8b9c06 [2020-10-25 21:35:26,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f20d026f0/11ab66bbd82c478eaf679116090b0331 [2020-10-25 21:35:26,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:35:26,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:35:26,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:35:26,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:35:26,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:35:26,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15416a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26, skipping insertion in model container [2020-10-25 21:35:26,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:35:26,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:35:26,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:35:26,505 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:35:26,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:35:26,540 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:35:26,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26 WrapperNode [2020-10-25 21:35:26,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:35:26,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:35:26,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:35:26,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:35:26,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:35:26,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:35:26,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:35:26,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:35:26,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (1/1) ... [2020-10-25 21:35:26,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:35:26,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:35:26,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:35:26,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:35:26,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (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 [2020-10-25 21:35:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:35:26,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:35:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:35:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:35:27,172 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:35:27,172 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-25 21:35:27,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:27 BoogieIcfgContainer [2020-10-25 21:35:27,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:35:27,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:35:27,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:35:27,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:35:27,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:35:26" (1/3) ... [2020-10-25 21:35:27,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589bcab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:35:27, skipping insertion in model container [2020-10-25 21:35:27,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:26" (2/3) ... [2020-10-25 21:35:27,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589bcab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:35:27, skipping insertion in model container [2020-10-25 21:35:27,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:27" (3/3) ... [2020-10-25 21:35:27,186 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-25 21:35:27,202 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:35:27,207 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:35:27,225 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:35:27,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:35:27,272 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:35:27,272 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:35:27,273 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:35:27,273 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:35:27,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:35:27,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:35:27,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:35:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-25 21:35:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 21:35:27,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:35:27,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 21:35:27,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:35:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:35:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-10-25 21:35:27,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:35:27,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050568861] [2020-10-25 21:35:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:35:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:35:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:35:27,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050568861] [2020-10-25 21:35:27,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:35:27,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:35:27,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506194984] [2020-10-25 21:35:27,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:35:27,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:35:27,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:35:27,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:35:27,580 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-10-25 21:35:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:35:27,597 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-25 21:35:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:35:27,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-25 21:35:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:35:27,613 INFO L225 Difference]: With dead ends: 18 [2020-10-25 21:35:27,613 INFO L226 Difference]: Without dead ends: 7 [2020-10-25 21:35:27,617 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 [2020-10-25 21:35:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-25 21:35:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-25 21:35:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-25 21:35:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-25 21:35:27,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-25 21:35:27,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:35:27,673 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-25 21:35:27,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:35:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-25 21:35:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 21:35:27,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:35:27,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 21:35:27,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:35:27,676 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:35:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:35:27,678 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-10-25 21:35:27,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:35:27,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816023834] [2020-10-25 21:35:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:35:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:35:27,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:35:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:35:27,762 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:35:27,792 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:35:27,793 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:35:27,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:35:27,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:35:27 BoogieIcfgContainer [2020-10-25 21:35:27,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:35:27,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:35:27,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:35:27,833 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:35:27,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:27" (3/4) ... [2020-10-25 21:35:27,838 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:35:27,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:35:27,845 INFO L168 Benchmark]: Toolchain (without parser) took 1616.08 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.4 MB in the beginning and 26.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:27,846 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 44.0 MB. Free memory is still 22.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:27,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.49 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.8 MB in the beginning and 31.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:27,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.13 ms. Allocated memory is still 54.5 MB. Free memory was 31.0 MB in the beginning and 29.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:27,852 INFO L168 Benchmark]: Boogie Preprocessor took 25.13 ms. Allocated memory is still 54.5 MB. Free memory was 29.7 MB in the beginning and 28.7 MB in the end (delta: 957.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:27,853 INFO L168 Benchmark]: RCFGBuilder took 562.15 ms. Allocated memory is still 54.5 MB. Free memory was 28.7 MB in the beginning and 32.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:27,855 INFO L168 Benchmark]: TraceAbstraction took 655.57 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 26.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:35:27,857 INFO L168 Benchmark]: Witness Printer took 7.46 ms. Allocated memory is still 54.5 MB. Free memory was 26.9 MB in the beginning and 26.6 MB in the end (delta: 249.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:35:27,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 44.0 MB. Free memory is still 22.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.49 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.8 MB in the beginning and 31.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.13 ms. Allocated memory is still 54.5 MB. Free memory was 31.0 MB in the beginning and 29.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.13 ms. Allocated memory is still 54.5 MB. Free memory was 29.7 MB in the beginning and 28.7 MB in the end (delta: 957.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 562.15 ms. Allocated memory is still 54.5 MB. Free memory was 28.7 MB in the beginning and 32.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 655.57 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 26.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Witness Printer took 7.46 ms. Allocated memory is still 54.5 MB. Free memory was 26.9 MB in the beginning and 26.6 MB in the end (delta: 249.8 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: 0.5s, 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 0.2.0-5485861 [2020-10-25 21:35:30,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:35:30,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:35:30,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:35:30,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:35:30,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:35:30,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:35:30,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:35:30,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:35:30,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:35:30,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:35:30,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:35:30,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:35:30,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:35:30,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:35:30,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:35:30,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:35:30,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:35:30,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:35:30,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:35:30,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:35:30,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:35:30,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:35:30,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:35:30,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:35:30,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:35:30,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:35:30,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:35:30,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:35:30,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:35:30,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:35:30,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:35:30,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:35:30,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:35:30,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:35:30,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:35:30,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:35:30,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:35:30,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:35:30,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:35:30,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:35:30,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:35:30,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:35:30,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:35:30,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:35:30,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:35:30,736 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:35:30,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:35:30,737 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:35:30,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:35:30,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:35:30,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:35:30,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:35:30,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:35:30,738 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:35:30,739 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:35:30,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:35:30,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:35:30,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:35:30,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:35:30,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:35:30,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:35:30,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:35:30,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:35:30,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:35:30,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:35:30,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:35:30,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:35:30,742 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:35:30,742 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:35:30,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:35:30,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:35:30,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:35:30,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-10-25 21:35:31,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:35:31,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:35:31,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:35:31,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:35:31,172 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:35:31,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-25 21:35:31,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14f1b627/6c0380447bf84bc1b49f624b9a7d267d/FLAG736f03b73 [2020-10-25 21:35:31,839 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:35:31,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-25 21:35:31,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14f1b627/6c0380447bf84bc1b49f624b9a7d267d/FLAG736f03b73 [2020-10-25 21:35:32,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14f1b627/6c0380447bf84bc1b49f624b9a7d267d [2020-10-25 21:35:32,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:35:32,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:35:32,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:35:32,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:35:32,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:35:32,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f2635d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32, skipping insertion in model container [2020-10-25 21:35:32,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:35:32,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:35:32,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:35:32,562 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:35:32,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:35:32,610 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:35:32,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32 WrapperNode [2020-10-25 21:35:32,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:35:32,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:35:32,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:35:32,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:35:32,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:35:32,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:35:32,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:35:32,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:35:32,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (1/1) ... [2020-10-25 21:35:32,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:35:32,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:35:32,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:35:32,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:35:32,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (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 [2020-10-25 21:35:32,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:35:32,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:35:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:35:32,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:35:33,252 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:35:33,253 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-25 21:35:33,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:33 BoogieIcfgContainer [2020-10-25 21:35:33,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:35:33,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:35:33,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:35:33,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:35:33,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:35:32" (1/3) ... [2020-10-25 21:35:33,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfe599a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:35:33, skipping insertion in model container [2020-10-25 21:35:33,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:35:32" (2/3) ... [2020-10-25 21:35:33,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bfe599a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:35:33, skipping insertion in model container [2020-10-25 21:35:33,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:33" (3/3) ... [2020-10-25 21:35:33,266 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-25 21:35:33,279 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:35:33,285 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:35:33,300 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:35:33,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:35:33,330 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:35:33,331 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:35:33,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:35:33,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:35:33,331 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:35:33,332 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:35:33,332 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:35:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-25 21:35:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 21:35:33,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:35:33,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 21:35:33,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:35:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:35:33,363 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-10-25 21:35:33,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:35:33,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749559497] [2020-10-25 21:35:33,378 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 [2020-10-25 21:35:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:35:33,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:35:33,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:35:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:35:33,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:35:33,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:35:33,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749559497] [2020-10-25 21:35:33,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:35:33,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:35:33,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647079711] [2020-10-25 21:35:33,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:35:33,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:35:33,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:35:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:35:33,585 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-10-25 21:35:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:35:33,596 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-25 21:35:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:35:33,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-25 21:35:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:35:33,606 INFO L225 Difference]: With dead ends: 18 [2020-10-25 21:35:33,606 INFO L226 Difference]: Without dead ends: 7 [2020-10-25 21:35:33,609 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 [2020-10-25 21:35:33,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-25 21:35:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-25 21:35:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-25 21:35:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-25 21:35:33,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-25 21:35:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:35:33,649 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-25 21:35:33,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:35:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-25 21:35:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-25 21:35:33,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:35:33,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-25 21:35:33,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:35:33,869 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:35:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:35:33,871 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-10-25 21:35:33,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:35:33,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502327311] [2020-10-25 21:35:33,872 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 [2020-10-25 21:35:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:35:33,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 21:35:33,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:35:35,157 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2020-10-25 21:35:40,171 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification that was a NOOP. DAG size: 21 [2020-10-25 21:35:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:35:40,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:35:46,417 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-25 21:35:46,423 INFO L603 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-10-25 21:35:50,113 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 [2020-10-25 21:35:53,817 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 [2020-10-25 21:35:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:35:53,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502327311] [2020-10-25 21:35:53,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:35:53,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2020-10-25 21:35:53,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308875550] [2020-10-25 21:35:53,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 21:35:53,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:35:53,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 21:35:53,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2020-10-25 21:35:53,824 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 9 states. [2020-10-25 21:35:56,322 WARN L838 $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 false [2020-10-25 21:35:58,407 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 [2020-10-25 21:36:02,036 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 [2020-10-25 21:36:13,160 WARN L193 SmtUtils]: Spent 9.07 s on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-10-25 21:36:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:36:13,163 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-10-25 21:36:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 21:36:13,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2020-10-25 21:36:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:36:13,164 INFO L225 Difference]: With dead ends: 7 [2020-10-25 21:36:13,164 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 21:36:13,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=30, Invalid=37, Unknown=5, NotChecked=60, Total=132 [2020-10-25 21:36:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 21:36:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 21:36:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 21:36:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 21:36:13,166 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-10-25 21:36:13,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:36:13,167 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 21:36:13,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 21:36:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 21:36:13,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 21:36:13,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:36:13,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 21:36:13,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 21:36:13,376 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 21:36:13,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 21:36:13,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 21:36:13,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-25 21:36:13,376 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-25 21:36:13,376 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-25 21:36:13,377 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-10-25 21:36:13,377 INFO L274 CegarLoopResult]: For program point L6(lines 6 15) no Hoare annotation was computed. [2020-10-25 21:36:13,377 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-25 21:36:13,377 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-10-25 21:36:13,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:36:13 BoogieIcfgContainer [2020-10-25 21:36:13,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:36:13,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:36:13,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:36:13,383 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:36:13,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:35:33" (3/4) ... [2020-10-25 21:36:13,387 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 21:36:13,398 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 21:36:13,398 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 21:36:13,399 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-25 21:36:13,399 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 21:36:13,439 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:36:13,439 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:36:13,442 INFO L168 Benchmark]: Toolchain (without parser) took 41229.16 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 25.1 MB in the beginning and 28.2 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-10-25 21:36:13,443 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 24.2 MB in the beginning and 24.2 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:36:13,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.25 ms. Allocated memory is still 41.9 MB. Free memory was 24.5 MB in the beginning and 24.6 MB in the end (delta: -54.3 kB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:36:13,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.44 ms. Allocated memory is still 41.9 MB. Free memory was 24.6 MB in the beginning and 23.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:36:13,445 INFO L168 Benchmark]: Boogie Preprocessor took 54.76 ms. Allocated memory is still 41.9 MB. Free memory was 23.1 MB in the beginning and 22.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:36:13,446 INFO L168 Benchmark]: RCFGBuilder took 531.69 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 31.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:36:13,447 INFO L168 Benchmark]: TraceAbstraction took 40125.23 ms. Allocated memory is still 52.4 MB. Free memory was 30.9 MB in the beginning and 30.6 MB in the end (delta: 374.6 kB). Peak memory consumption was 819.6 kB. Max. memory is 16.1 GB. [2020-10-25 21:36:13,448 INFO L168 Benchmark]: Witness Printer took 56.56 ms. Allocated memory is still 52.4 MB. Free memory was 30.6 MB in the beginning and 28.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:36:13,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 24.2 MB in the beginning and 24.2 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.25 ms. Allocated memory is still 41.9 MB. Free memory was 24.5 MB in the beginning and 24.6 MB in the end (delta: -54.3 kB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.44 ms. Allocated memory is still 41.9 MB. Free memory was 24.6 MB in the beginning and 23.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.76 ms. Allocated memory is still 41.9 MB. Free memory was 23.1 MB in the beginning and 22.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 531.69 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 31.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 40125.23 ms. Allocated memory is still 52.4 MB. Free memory was 30.9 MB in the beginning and 30.6 MB in the end (delta: 374.6 kB). Peak memory consumption was 819.6 kB. Max. memory is 16.1 GB. * Witness Printer took 56.56 ms. Allocated memory is still 52.4 MB. Free memory was 30.6 MB in the beginning and 28.2 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: 40.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 19.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.3s 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, 19.8s 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...