./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-cbmc-regression/float5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f 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 ../../../trunk/examples/svcomp/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 ../../../trunk/examples/svcomp/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: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 14:12:08,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:12:08,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:12:08,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:12:08,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:12:08,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:12:08,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:12:08,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:12:08,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:12:08,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:12:08,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:12:08,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:12:08,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:12:08,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:12:08,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:12:08,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:12:08,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:12:08,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:12:08,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:12:08,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:12:08,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:12:08,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:12:08,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:12:08,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:12:08,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:12:08,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:12:08,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:12:08,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:12:08,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:12:08,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:12:08,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:12:08,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:12:08,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:12:08,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:12:08,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:12:08,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:12:08,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:12:08,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:12:08,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:12:08,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:12:08,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:12:08,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 14:12:08,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:12:08,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:12:08,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:12:08,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:12:08,279 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:12:08,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:12:08,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:12:08,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 14:12:08,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:12:08,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:12:08,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:12:08,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:12:08,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:12:08,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:12:08,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:12:08,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:12:08,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:12:08,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:12:08,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:12:08,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:12:08,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:12:08,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:12:08,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:12:08,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:12:08,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:12:08,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 14:12:08,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 14:12:08,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:12:08,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:12:08,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-12-02 14:12:08,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:12:08,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:12:08,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:12:08,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:12:08,800 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:12:08,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float5.c [2020-12-02 14:12:08,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0560925b2/0bc8d9d1aeed4350b59048350d9fa504/FLAG6a88e8b01 [2020-12-02 14:12:09,561 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:12:09,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float5.c [2020-12-02 14:12:09,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0560925b2/0bc8d9d1aeed4350b59048350d9fa504/FLAG6a88e8b01 [2020-12-02 14:12:09,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0560925b2/0bc8d9d1aeed4350b59048350d9fa504 [2020-12-02 14:12:09,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:12:09,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:12:09,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:12:09,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:12:09,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:12:09,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:12:09" (1/1) ... [2020-12-02 14:12:09,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b991d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:09, skipping insertion in model container [2020-12-02 14:12:09,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:12:09" (1/1) ... [2020-12-02 14:12:09,943 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:12:09,954 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:12:10,165 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float5.c[501,514] [2020-12-02 14:12:10,169 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:12:10,179 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:12:10,204 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float5.c[501,514] [2020-12-02 14:12:10,205 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:12:10,227 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:12:10,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10 WrapperNode [2020-12-02 14:12:10,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:12:10,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:12:10,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:12:10,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:12:10,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:12:10,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:12:10,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:12:10,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:12:10,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (1/1) ... [2020-12-02 14:12:10,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:12:10,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:12:10,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:12:10,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:12:10,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (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 [2020-12-02 14:12:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:12:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:12:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 14:12:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:12:10,612 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:12:10,612 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-02 14:12:10,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:12:10 BoogieIcfgContainer [2020-12-02 14:12:10,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:12:10,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:12:10,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:12:10,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:12:10,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:12:09" (1/3) ... [2020-12-02 14:12:10,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8fd45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:12:10, skipping insertion in model container [2020-12-02 14:12:10,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:10" (2/3) ... [2020-12-02 14:12:10,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8fd45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:12:10, skipping insertion in model container [2020-12-02 14:12:10,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:12:10" (3/3) ... [2020-12-02 14:12:10,625 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-12-02 14:12:10,645 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:12:10,649 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 14:12:10,665 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 14:12:10,732 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:12:10,732 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:12:10,732 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:12:10,733 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:12:10,733 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:12:10,733 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:12:10,733 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:12:10,733 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:12:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-02 14:12:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 14:12:10,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:10,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 14:12:10,789 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:10,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:10,803 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-12-02 14:12:10,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 14:12:10,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512248439] [2020-12-02 14:12:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 14:12:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:10,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512248439] [2020-12-02 14:12:10,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:10,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 14:12:10,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621280639] [2020-12-02 14:12:10,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 14:12:10,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 14:12:11,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 14:12:11,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 14:12:11,023 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2020-12-02 14:12:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:11,037 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-02 14:12:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 14:12:11,039 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-02 14:12:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:11,049 INFO L225 Difference]: With dead ends: 17 [2020-12-02 14:12:11,049 INFO L226 Difference]: Without dead ends: 7 [2020-12-02 14:12:11,053 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 [2020-12-02 14:12:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-02 14:12:11,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-02 14:12:11,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-02 14:12:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-12-02 14:12:11,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-12-02 14:12:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:11,089 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-12-02 14:12:11,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 14:12:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-12-02 14:12:11,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 14:12:11,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:11,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 14:12:11,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 14:12:11,090 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:11,092 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-12-02 14:12:11,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 14:12:11,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482110415] [2020-12-02 14:12:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 14:12:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:12:11,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:12:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:12:11,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:12:11,161 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 14:12:11,161 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 14:12:11,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 14:12:11,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:12:11 BoogieIcfgContainer [2020-12-02 14:12:11,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:12:11,189 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:12:11,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:12:11,190 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:12:11,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:12:10" (3/4) ... [2020-12-02 14:12:11,195 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 14:12:11,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:12:11,198 INFO L168 Benchmark]: Toolchain (without parser) took 1272.54 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 30.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:11,199 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 44.0 MB. Free memory was 23.6 MB in the beginning and 23.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:12:11,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.37 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 35.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:11,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.75 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 34.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:12:11,202 INFO L168 Benchmark]: Boogie Preprocessor took 22.68 ms. Allocated memory is still 54.5 MB. Free memory was 34.0 MB in the beginning and 33.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:11,203 INFO L168 Benchmark]: RCFGBuilder took 324.59 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 35.8 MB in the end (delta: -2.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:11,204 INFO L168 Benchmark]: TraceAbstraction took 571.97 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 30.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-02 14:12:11,208 INFO L168 Benchmark]: Witness Printer took 5.78 ms. Allocated memory is still 54.5 MB. Free memory was 30.3 MB in the beginning and 30.0 MB in the end (delta: 234.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:12:11,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 44.0 MB. Free memory was 23.6 MB in the beginning and 23.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.37 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 35.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.75 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 34.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.68 ms. Allocated memory is still 54.5 MB. Free memory was 34.0 MB in the beginning and 33.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 324.59 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 35.8 MB in the end (delta: -2.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 571.97 ms. Allocated memory is still 54.5 MB. Free memory was 35.3 MB in the beginning and 30.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.78 ms. Allocated memory is still 54.5 MB. Free memory was 30.3 MB in the beginning and 30.0 MB in the end (delta: 234.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 12, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 10, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 14. 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) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=10occurred 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 0.2.0-2880296 [2020-12-02 14:12:13,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:12:13,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:12:14,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:12:14,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:12:14,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:12:14,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:12:14,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:12:14,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:12:14,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:12:14,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:12:14,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:12:14,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:12:14,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:12:14,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:12:14,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:12:14,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:12:14,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:12:14,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:12:14,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:12:14,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:12:14,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:12:14,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:12:14,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:12:14,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:12:14,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:12:14,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:12:14,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:12:14,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:12:14,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:12:14,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:12:14,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:12:14,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:12:14,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:12:14,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:12:14,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:12:14,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:12:14,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:12:14,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:12:14,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:12:14,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:12:14,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 14:12:14,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:12:14,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:12:14,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:12:14,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:12:14,201 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:12:14,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:12:14,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:12:14,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:12:14,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:12:14,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:12:14,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:12:14,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:12:14,205 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 14:12:14,205 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 14:12:14,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:12:14,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:12:14,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:12:14,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:12:14,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:12:14,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:12:14,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:12:14,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:12:14,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:12:14,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:12:14,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:12:14,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:12:14,209 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 14:12:14,209 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 14:12:14,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:12:14,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:12:14,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 14:12:14,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-12-02 14:12:14,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:12:14,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:12:14,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:12:14,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:12:14,733 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:12:14,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float5.c [2020-12-02 14:12:14,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5fe5889/eb28ce449b9948e79fdaad102d0991e1/FLAG100c098fd [2020-12-02 14:12:15,450 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:12:15,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float5.c [2020-12-02 14:12:15,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5fe5889/eb28ce449b9948e79fdaad102d0991e1/FLAG100c098fd [2020-12-02 14:12:15,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5fe5889/eb28ce449b9948e79fdaad102d0991e1 [2020-12-02 14:12:15,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:12:15,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:12:15,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:12:15,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:12:15,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:12:15,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:12:15" (1/1) ... [2020-12-02 14:12:15,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d67780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:15, skipping insertion in model container [2020-12-02 14:12:15,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:12:15" (1/1) ... [2020-12-02 14:12:15,844 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:12:15,861 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:12:16,079 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float5.c[501,514] [2020-12-02 14:12:16,085 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:12:16,106 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:12:16,127 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float5.c[501,514] [2020-12-02 14:12:16,128 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:12:16,149 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:12:16,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16 WrapperNode [2020-12-02 14:12:16,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:12:16,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:12:16,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:12:16,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:12:16,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:12:16,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:12:16,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:12:16,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:12:16,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (1/1) ... [2020-12-02 14:12:16,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:12:16,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:12:16,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:12:16,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:12:16,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (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 [2020-12-02 14:12:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 14:12:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 14:12:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:12:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:12:16,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:12:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-12-02 14:12:18,303 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:12:18,303 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-02 14:12:18,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:12:18 BoogieIcfgContainer [2020-12-02 14:12:18,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:12:18,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:12:18,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:12:18,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:12:18,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:12:15" (1/3) ... [2020-12-02 14:12:18,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf62ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:12:18, skipping insertion in model container [2020-12-02 14:12:18,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:12:16" (2/3) ... [2020-12-02 14:12:18,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf62ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:12:18, skipping insertion in model container [2020-12-02 14:12:18,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:12:18" (3/3) ... [2020-12-02 14:12:18,317 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-12-02 14:12:18,334 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:12:18,339 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 14:12:18,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 14:12:18,383 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:12:18,383 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:12:18,384 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:12:18,384 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:12:18,384 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:12:18,384 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:12:18,385 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:12:18,385 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:12:18,400 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-02 14:12:18,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 14:12:18,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:18,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:18,408 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash -594006230, now seen corresponding path program 1 times [2020-12-02 14:12:18,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:18,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681580452] [2020-12-02 14:12:18,430 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 [2020-12-02 14:12:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:18,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 14:12:18,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:18,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681580452] [2020-12-02 14:12:18,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:18,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 14:12:18,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067810058] [2020-12-02 14:12:18,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 14:12:18,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:18,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 14:12:18,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 14:12:18,711 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-02 14:12:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:12:18,727 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-12-02 14:12:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 14:12:18,728 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-02 14:12:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:12:18,739 INFO L225 Difference]: With dead ends: 20 [2020-12-02 14:12:18,739 INFO L226 Difference]: Without dead ends: 10 [2020-12-02 14:12:18,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 14:12:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-02 14:12:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-02 14:12:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-02 14:12:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-02 14:12:18,782 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2020-12-02 14:12:18,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:12:18,783 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-02 14:12:18,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 14:12:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-02 14:12:18,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 14:12:18,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:12:18,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:12:18,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 14:12:18,999 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:12:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:12:19,000 INFO L82 PathProgramCache]: Analyzing trace with hash -593946648, now seen corresponding path program 1 times [2020-12-02 14:12:19,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:12:19,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639046114] [2020-12-02 14:12:19,002 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 [2020-12-02 14:12:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:12:19,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 14:12:19,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:12:23,677 WARN L197 SmtUtils]: Spent 3.66 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-02 14:12:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:24,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:12:39,404 WARN L197 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-02 14:12:52,301 WARN L197 SmtUtils]: Spent 4.35 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-02 14:12:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:12:52,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639046114] [2020-12-02 14:12:52,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:12:52,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-02 14:12:52,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385351399] [2020-12-02 14:12:52,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 14:12:52,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:12:52,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 14:12:52,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=45, Unknown=3, NotChecked=0, Total=72 [2020-12-02 14:12:52,755 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 9 states. [2020-12-02 14:12:56,949 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2020-12-02 14:13:05,912 WARN L197 SmtUtils]: Spent 3.10 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-02 14:13:22,816 WARN L197 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2020-12-02 14:13:31,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:13:31,035 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-02 14:13:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 14:13:31,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-12-02 14:13:31,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:13:31,047 INFO L225 Difference]: With dead ends: 17 [2020-12-02 14:13:31,047 INFO L226 Difference]: Without dead ends: 10 [2020-12-02 14:13:31,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=47, Invalid=82, Unknown=3, NotChecked=0, Total=132 [2020-12-02 14:13:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-02 14:13:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-02 14:13:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-02 14:13:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-12-02 14:13:31,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-12-02 14:13:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:13:31,053 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-12-02 14:13:31,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 14:13:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-12-02 14:13:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 14:13:31,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:13:31,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:13:31,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 14:13:31,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:13:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:13:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1181060714, now seen corresponding path program 1 times [2020-12-02 14:13:31,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:13:31,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825025590] [2020-12-02 14:13:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 14:13:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:13:31,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 14:13:31,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:13:31,397 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:13:32,981 WARN L197 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-02 14:13:32,990 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:13:32,991 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:13:37,672 WARN L197 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-02 14:13:39,173 WARN L197 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-02 14:13:39,185 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-02 14:13:41,220 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0)))) (or (and (exists ((|ULTIMATE.start_main_#t~nondet9| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |ULTIMATE.start_main_#t~nondet9|) ((_ extract 62 52) |ULTIMATE.start_main_#t~nondet9|) ((_ extract 51 0) |ULTIMATE.start_main_#t~nondet9|)))) (and (= ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0) (fp.eq ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0))) .cse0)))) (exists ((|v_ULTIMATE.start_main_#t~nondet13_9| (_ BitVec 32))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet13_9|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet13_9|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet13_9|)))) (and (= (fp.mul roundNearestTiesToEven .cse1 .cse2) (fp ((_ extract 31 31) c_ULTIMATE.start_main_~a~0) ((_ extract 30 23) c_ULTIMATE.start_main_~a~0) ((_ extract 22 0) c_ULTIMATE.start_main_~a~0))) (= (fp.div roundNearestTiesToEven (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0)) .cse2) .cse1))))) (and (exists ((v_prenex_4 (_ BitVec 32))) (let ((.cse4 (fp ((_ extract 31 31) v_prenex_4) ((_ extract 30 23) v_prenex_4) ((_ extract 22 0) v_prenex_4))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)))) (and (= (fp.div roundNearestTiesToEven (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0)) .cse3) .cse4) (= (fp.mul roundNearestTiesToEven .cse4 .cse3) (fp ((_ extract 31 31) c_ULTIMATE.start_main_~a~0) ((_ extract 30 23) c_ULTIMATE.start_main_~a~0) ((_ extract 22 0) c_ULTIMATE.start_main_~a~0)))))) (fp.eq .cse5 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv3 32)))) (and (fp.eq .cse5 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))) (exists ((v_prenex_3 (_ BitVec 32))) (let ((.cse7 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))) (.cse6 (fp ((_ extract 31 31) v_prenex_3) ((_ extract 30 23) v_prenex_3) ((_ extract 22 0) v_prenex_3)))) (and (= (fp.mul roundNearestTiesToEven .cse6 .cse7) (fp ((_ extract 31 31) c_ULTIMATE.start_main_~a~0) ((_ extract 30 23) c_ULTIMATE.start_main_~a~0) ((_ extract 22 0) c_ULTIMATE.start_main_~a~0))) (= (fp.div roundNearestTiesToEven (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0)) .cse7) .cse6))))))) is different from false [2020-12-02 14:13:43,455 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0)))) (or (and (exists ((|ULTIMATE.start_main_#t~nondet9| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |ULTIMATE.start_main_#t~nondet9|) ((_ extract 62 52) |ULTIMATE.start_main_#t~nondet9|) ((_ extract 51 0) |ULTIMATE.start_main_#t~nondet9|)))) (and (= ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0) (fp.eq ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0))) .cse0)))) (exists ((|v_ULTIMATE.start_main_#t~nondet13_9| (_ BitVec 32))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet13_9|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet13_9|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet13_9|)))) (and (= (fp.mul roundNearestTiesToEven .cse1 .cse2) (fp ((_ extract 31 31) c_ULTIMATE.start_main_~a~0) ((_ extract 30 23) c_ULTIMATE.start_main_~a~0) ((_ extract 22 0) c_ULTIMATE.start_main_~a~0))) (= (fp.div roundNearestTiesToEven (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0)) .cse2) .cse1))))) (and (exists ((v_prenex_4 (_ BitVec 32))) (let ((.cse4 (fp ((_ extract 31 31) v_prenex_4) ((_ extract 30 23) v_prenex_4) ((_ extract 22 0) v_prenex_4))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)))) (and (= (fp.div roundNearestTiesToEven (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0)) .cse3) .cse4) (= (fp.mul roundNearestTiesToEven .cse4 .cse3) (fp ((_ extract 31 31) c_ULTIMATE.start_main_~a~0) ((_ extract 30 23) c_ULTIMATE.start_main_~a~0) ((_ extract 22 0) c_ULTIMATE.start_main_~a~0)))))) (fp.eq .cse5 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv3 32)))) (and (fp.eq .cse5 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))) (exists ((v_prenex_3 (_ BitVec 32))) (let ((.cse7 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))) (.cse6 (fp ((_ extract 31 31) v_prenex_3) ((_ extract 30 23) v_prenex_3) ((_ extract 22 0) v_prenex_3)))) (and (= (fp.mul roundNearestTiesToEven .cse6 .cse7) (fp ((_ extract 31 31) c_ULTIMATE.start_main_~a~0) ((_ extract 30 23) c_ULTIMATE.start_main_~a~0) ((_ extract 22 0) c_ULTIMATE.start_main_~a~0))) (= (fp.div roundNearestTiesToEven (fp ((_ extract 31 31) c_ULTIMATE.start_main_~b~0) ((_ extract 30 23) c_ULTIMATE.start_main_~b~0) ((_ extract 22 0) c_ULTIMATE.start_main_~b~0)) .cse7) .cse6))))))) is different from true [2020-12-02 14:13:45,490 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-02 14:13:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:13:47,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:13:50,189 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet13_9| (_ BitVec 32)) (v_ULTIMATE.start_main_~a~0_17 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) c_ULTIMATE.start_main_~a~0) ((_ extract 30 23) c_ULTIMATE.start_main_~a~0) ((_ extract 22 0) c_ULTIMATE.start_main_~a~0))) (.cse2 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet13_9|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet13_9|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet13_9|))) (.cse1 ((_ to_fp 8 24) c_~CRM (_ bv2 32))) (.cse3 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~a~0_17) ((_ extract 30 23) v_ULTIMATE.start_main_~a~0_17) ((_ extract 22 0) v_ULTIMATE.start_main_~a~0_17)))) (or (not (= (fp.div c_~CRM .cse0 .cse1) .cse2)) (fp.eq .cse3 .cse0) (not (= (fp.mul c_~CRM .cse2 .cse1) .cse3))))) is different from true [2020-12-02 14:13:52,226 WARN L860 $PredicateComparison]: unable to prove that (or (not |c_ULTIMATE.start_main_#t~short12|) (forall ((|v_ULTIMATE.start_main_#t~nondet13_9| (_ BitVec 32)) (v_ULTIMATE.start_main_~a~0_17 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) c_ULTIMATE.start_main_~a~0) ((_ extract 30 23) c_ULTIMATE.start_main_~a~0) ((_ extract 22 0) c_ULTIMATE.start_main_~a~0))) (.cse2 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet13_9|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet13_9|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet13_9|))) (.cse1 ((_ to_fp 8 24) c_~CRM (_ bv2 32))) (.cse3 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~a~0_17) ((_ extract 30 23) v_ULTIMATE.start_main_~a~0_17) ((_ extract 22 0) v_ULTIMATE.start_main_~a~0_17)))) (or (not (= (fp.div c_~CRM .cse0 .cse1) .cse2)) (fp.eq .cse3 .cse0) (not (= (fp.mul c_~CRM .cse2 .cse1) .cse3)))))) is different from true [2020-12-02 14:14:15,075 WARN L197 SmtUtils]: Spent 12.30 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-12-02 14:14:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:14:16,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825025590] [2020-12-02 14:14:16,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:14:16,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-02 14:14:16,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315868381] [2020-12-02 14:14:16,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-02 14:14:16,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:14:16,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-02 14:14:16,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=39, Unknown=5, NotChecked=42, Total=110 [2020-12-02 14:14:16,515 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 11 states. [2020-12-02 14:14:24,016 WARN L197 SmtUtils]: Spent 3.00 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-02 14:15:15,393 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-12-02 14:15:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 14:15:15,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 14:15:15,596 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:131) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:53) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:135) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 54 more [2020-12-02 14:15:15,603 INFO L168 Benchmark]: Toolchain (without parser) took 179782.81 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.2 MB in the beginning and 25.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:15:15,604 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:15:15,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.53 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 30.0 MB in the end (delta: -979.0 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-02 14:15:15,606 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.60 ms. Allocated memory is still 52.4 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:15:15,607 INFO L168 Benchmark]: Boogie Preprocessor took 34.52 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 27.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:15:15,608 INFO L168 Benchmark]: RCFGBuilder took 2072.31 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 37.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-12-02 14:15:15,609 INFO L168 Benchmark]: TraceAbstraction took 177294.25 ms. Allocated memory is still 62.9 MB. Free memory was 37.1 MB in the beginning and 25.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-12-02 14:15:15,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.53 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 30.0 MB in the end (delta: -979.0 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.60 ms. Allocated memory is still 52.4 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.52 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 27.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2072.31 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 37.6 MB in the end (delta: -10.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 177294.25 ms. Allocated memory is still 62.9 MB. Free memory was 37.1 MB in the beginning and 25.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...