./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4353b03ed39dd917d13c7cd6163e83d6972334fc .................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:16:25,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:16:25,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:16:25,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:16:25,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:16:25,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:16:25,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:16:25,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:16:25,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:16:25,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:16:25,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:16:25,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:16:25,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:16:25,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:16:25,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:16:25,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:16:25,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:16:25,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:16:25,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:16:25,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:16:25,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:16:25,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:16:25,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:16:25,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:16:25,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:16:25,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:16:25,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:16:25,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:16:25,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:16:25,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:16:25,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:16:25,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:16:25,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:16:25,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:16:25,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:16:25,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:16:25,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:16:25,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:16:25,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:16:25,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:16:25,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:16:25,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 14:16:25,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:16:25,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:16:25,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:16:25,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:16:25,719 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:16:25,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:16:25,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:16:25,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 14:16:25,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:16:25,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:16:25,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:16:25,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:16:25,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:16:25,722 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:16:25,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:16:25,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:16:25,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:16:25,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:16:25,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:16:25,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:16:25,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:16:25,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:16:25,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:16:25,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:16:25,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:16:25,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 14:16:25,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 14:16:25,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:16:25,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:16:25,726 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-10-24 14:16:26,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:16:26,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:16:26,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:16:26,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:16:26,179 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:16:26,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-24 14:16:26,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e167a87a/c09f02e1163143f2a4830907a9160cb1/FLAG234825bd1 [2020-10-24 14:16:26,836 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:16:26,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-24 14:16:26,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e167a87a/c09f02e1163143f2a4830907a9160cb1/FLAG234825bd1 [2020-10-24 14:16:27,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e167a87a/c09f02e1163143f2a4830907a9160cb1 [2020-10-24 14:16:27,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:16:27,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:16:27,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:16:27,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:16:27,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:16:27,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f33f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27, skipping insertion in model container [2020-10-24 14:16:27,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,275 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:16:27,326 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:16:27,542 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:16:27,554 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:16:27,572 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:16:27,589 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:16:27,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27 WrapperNode [2020-10-24 14:16:27,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:16:27,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:16:27,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:16:27,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:16:27,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:16:27,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:16:27,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:16:27,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:16:27,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... [2020-10-24 14:16:27,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:16:27,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:16:27,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:16:27,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:16:27,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:16:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:16:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:16:27,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 14:16:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:16:27,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:16:27,981 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-24 14:16:27,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:27 BoogieIcfgContainer [2020-10-24 14:16:27,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:16:27,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:16:27,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:16:27,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:16:27,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:16:27" (1/3) ... [2020-10-24 14:16:27,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285a4898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:27, skipping insertion in model container [2020-10-24 14:16:27,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:27" (2/3) ... [2020-10-24 14:16:27,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@285a4898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:27, skipping insertion in model container [2020-10-24 14:16:27,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:27" (3/3) ... [2020-10-24 14:16:27,994 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-24 14:16:28,009 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:16:28,019 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:16:28,034 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:16:28,081 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:16:28,081 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:16:28,081 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:16:28,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:16:28,082 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:16:28,082 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:16:28,082 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:16:28,082 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:16:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-24 14:16:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 14:16:28,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:28,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 14:16:28,115 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:16:28,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:28,125 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-10-24 14:16:28,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:16:28,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941845274] [2020-10-24 14:16:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:16:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:28,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941845274] [2020-10-24 14:16:28,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:28,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 14:16:28,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455298807] [2020-10-24 14:16:28,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 14:16:28,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:16:28,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 14:16:28,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 14:16:28,479 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-10-24 14:16:28,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:28,496 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-24 14:16:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 14:16:28,498 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-24 14:16:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:28,509 INFO L225 Difference]: With dead ends: 18 [2020-10-24 14:16:28,509 INFO L226 Difference]: Without dead ends: 7 [2020-10-24 14:16:28,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 14:16:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-24 14:16:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-24 14:16:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-24 14:16:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-24 14:16:28,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-24 14:16:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:28,551 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-24 14:16:28,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 14:16:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-24 14:16:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 14:16:28,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:28,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 14:16:28,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 14:16:28,553 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:16:28,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:28,555 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-10-24 14:16:28,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:16:28,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564888382] [2020-10-24 14:16:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:16:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:16:28,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:16:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:16:28,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:16:28,625 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 14:16:28,626 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:16:28,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 14:16:28,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:16:28 BoogieIcfgContainer [2020-10-24 14:16:28,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:16:28,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:16:28,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:16:28,659 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:16:28,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:27" (3/4) ... [2020-10-24 14:16:28,664 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 14:16:28,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:16:28,668 INFO L168 Benchmark]: Toolchain (without parser) took 1477.25 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 17.2 MB in the beginning and 31.3 MB in the end (delta: -14.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:16:28,669 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 39.8 MB. Free memory is still 24.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:16:28,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.87 ms. Allocated memory is still 39.8 MB. Free memory was 16.5 MB in the beginning and 16.5 MB in the end (delta: 54.7 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 14:16:28,671 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 39.8 MB. Free memory was 16.4 MB in the beginning and 15.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:16:28,672 INFO L168 Benchmark]: Boogie Preprocessor took 44.20 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.1 MB in the beginning and 32.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-24 14:16:28,673 INFO L168 Benchmark]: RCFGBuilder took 306.15 ms. Allocated memory is still 48.2 MB. Free memory was 32.4 MB in the beginning and 22.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:16:28,674 INFO L168 Benchmark]: TraceAbstraction took 672.14 ms. Allocated memory is still 48.2 MB. Free memory was 22.0 MB in the beginning and 31.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:16:28,675 INFO L168 Benchmark]: Witness Printer took 6.07 ms. Allocated memory is still 48.2 MB. Free memory was 31.5 MB in the beginning and 31.3 MB in the end (delta: 250.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:16:28,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 39.8 MB. Free memory is still 24.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.87 ms. Allocated memory is still 39.8 MB. Free memory was 16.5 MB in the beginning and 16.5 MB in the end (delta: 54.7 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 39.8 MB. Free memory was 16.4 MB in the beginning and 15.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.20 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.1 MB in the beginning and 32.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 306.15 ms. Allocated memory is still 48.2 MB. Free memory was 32.4 MB in the beginning and 22.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 672.14 ms. Allocated memory is still 48.2 MB. Free memory was 22.0 MB in the beginning and 31.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 6.07 ms. Allocated memory is still 48.2 MB. Free memory was 31.5 MB in the beginning and 31.3 MB in the end (delta: 250.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of 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) [L4] __assert_fail("0", "float5.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:16:31,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:16:31,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:16:31,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:16:31,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:16:31,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:16:31,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:16:31,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:16:31,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:16:31,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:16:31,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:16:31,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:16:31,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:16:31,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:16:31,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:16:31,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:16:31,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:16:31,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:16:31,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:16:31,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:16:31,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:16:31,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:16:31,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:16:31,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:16:31,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:16:31,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:16:31,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:16:31,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:16:31,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:16:31,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:16:31,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:16:31,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:16:31,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:16:31,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:16:31,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:16:31,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:16:31,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:16:31,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:16:31,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:16:31,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:16:31,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:16:31,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 14:16:31,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:16:31,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:16:31,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:16:31,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:16:31,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:16:31,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:16:31,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:16:31,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:16:31,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:16:31,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:16:31,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:16:31,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:16:31,642 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 14:16:31,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 14:16:31,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:16:31,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:16:31,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:16:31,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:16:31,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:16:31,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:16:31,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:16:31,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:16:31,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:16:31,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:16:31,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:16:31,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:16:31,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 14:16:31,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 14:16:31,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:16:31,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:16:31,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 14:16:31,647 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2020-10-24 14:16:32,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:16:32,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:16:32,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:16:32,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:16:32,141 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:16:32,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-24 14:16:32,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1a65433/fd4780b9295b4b9587295dea44d14f50/FLAGe447a97d6 [2020-10-24 14:16:32,971 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:16:32,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float5.c [2020-10-24 14:16:32,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1a65433/fd4780b9295b4b9587295dea44d14f50/FLAGe447a97d6 [2020-10-24 14:16:33,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1a65433/fd4780b9295b4b9587295dea44d14f50 [2020-10-24 14:16:33,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:16:33,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:16:33,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:16:33,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:16:33,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:16:33,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6608a62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33, skipping insertion in model container [2020-10-24 14:16:33,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,351 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:16:33,368 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:16:33,580 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:16:33,597 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:16:33,614 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:16:33,634 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:16:33,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33 WrapperNode [2020-10-24 14:16:33,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:16:33,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:16:33,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:16:33,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:16:33,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:16:33,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:16:33,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:16:33,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:16:33,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... [2020-10-24 14:16:33,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:16:33,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:16:33,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:16:33,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:16:33,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:16:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 14:16:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 14:16:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:16:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:16:33,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:16:33,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 14:16:34,662 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:16:34,666 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-24 14:16:34,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:34 BoogieIcfgContainer [2020-10-24 14:16:34,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:16:34,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:16:34,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:16:34,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:16:34,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:16:33" (1/3) ... [2020-10-24 14:16:34,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2603c819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:34, skipping insertion in model container [2020-10-24 14:16:34,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:33" (2/3) ... [2020-10-24 14:16:34,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2603c819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:34, skipping insertion in model container [2020-10-24 14:16:34,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:34" (3/3) ... [2020-10-24 14:16:34,680 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-24 14:16:34,696 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:16:34,702 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:16:34,719 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:16:34,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:16:34,767 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:16:34,767 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:16:34,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:16:34,768 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:16:34,768 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:16:34,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:16:34,768 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:16:34,787 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 14:16:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 14:16:34,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:34,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:34,797 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:16:34,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash -594006230, now seen corresponding path program 1 times [2020-10-24 14:16:34,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:34,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006434462] [2020-10-24 14:16:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 14:16:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:34,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 14:16:34,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:35,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:35,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006434462] [2020-10-24 14:16:35,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:35,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 14:16:35,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380218437] [2020-10-24 14:16:35,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 14:16:35,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:35,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 14:16:35,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 14:16:35,042 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 14:16:35,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:35,064 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-10-24 14:16:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 14:16:35,066 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 14:16:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:35,076 INFO L225 Difference]: With dead ends: 21 [2020-10-24 14:16:35,077 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 14:16:35,080 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 [2020-10-24 14:16:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 14:16:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 14:16:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 14:16:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-10-24 14:16:35,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2020-10-24 14:16:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:35,118 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-10-24 14:16:35,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 14:16:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-10-24 14:16:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 14:16:35,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:35,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:35,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 14:16:35,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:16:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:35,333 INFO L82 PathProgramCache]: Analyzing trace with hash -593946648, now seen corresponding path program 1 times [2020-10-24 14:16:35,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:35,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451028163] [2020-10-24 14:16:35,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 14:16:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:35,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 14:16:35,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:36,938 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-24 14:16:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:37,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:16:44,455 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-10-24 14:16:47,336 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-24 14:16:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:16:47,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451028163] [2020-10-24 14:16:47,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:16:47,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-24 14:16:47,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024921758] [2020-10-24 14:16:47,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 14:16:47,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:16:47,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 14:16:47,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=46, Unknown=2, NotChecked=0, Total=72 [2020-10-24 14:16:47,629 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 9 states. [2020-10-24 14:16:48,438 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2020-10-24 14:16:51,821 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 33 [2020-10-24 14:16:57,289 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2020-10-24 14:16:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:16:58,990 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-10-24 14:16:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 14:16:59,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-24 14:16:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:16:59,006 INFO L225 Difference]: With dead ends: 17 [2020-10-24 14:16:59,006 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 14:16:59,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=47, Invalid=83, Unknown=2, NotChecked=0, Total=132 [2020-10-24 14:16:59,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 14:16:59,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 14:16:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 14:16:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-24 14:16:59,013 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-10-24 14:16:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:16:59,018 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-24 14:16:59,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 14:16:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-24 14:16:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 14:16:59,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:16:59,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:16:59,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 14:16:59,228 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:16:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:16:59,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1181060714, now seen corresponding path program 1 times [2020-10-24 14:16:59,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:16:59,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891165138] [2020-10-24 14:16:59,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 14:16:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:16:59,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 14:16:59,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:16:59,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 14:17:00,605 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-24 14:17:00,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 14:17:00,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 14:17:04,268 WARN L193 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-24 14:17:05,532 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-24 14:17:05,537 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-24 14:17:18,766 WARN L193 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 64 [2020-10-24 14:17:20,798 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-24 14:17:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:17:21,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:17:36,611 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-10-24 14:17:44,034 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 30 [2020-10-24 14:17:56,360 WARN L193 SmtUtils]: Spent 4.50 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-24 14:17:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:17:57,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891165138] [2020-10-24 14:17:57,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:17:57,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-24 14:17:57,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866676142] [2020-10-24 14:17:57,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 14:17:57,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:17:57,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 14:17:57,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=76, Unknown=4, NotChecked=0, Total=110 [2020-10-24 14:17:57,460 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 11 states. [2020-10-24 14:18:04,307 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 33 [2020-10-24 14:18:14,745 WARN L193 SmtUtils]: Spent 6.32 s on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-24 14:18:20,352 WARN L193 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-24 14:18:28,988 WARN L838 $PredicateComparison]: unable to prove that (and (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))))))) (let ((.cse10 (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))) (.cse9 (= roundNearestTiesToEven c_~CRM))) (or (and (exists ((|ULTIMATE.start_main_#t~nondet9| (_ BitVec 64))) (let ((.cse8 (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) c_~CRM (/ 1.0 2.0)) .cse8) (fp.eq ((_ to_fp 11 53) c_~CRM (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))) .cse8)))) .cse9) (and (fp.eq .cse10 ((_ to_fp 8 24) c_~CRM (_ bv2 32))) .cse9) (and (fp.eq .cse10 ((_ to_fp 8 24) c_~CRM (_ bv3 32))) .cse9)))) is different from false [2020-10-24 14:18:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:29,015 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-10-24 14:18:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 14:18:29,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2020-10-24 14:18:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:29,015 INFO L225 Difference]: With dead ends: 11 [2020-10-24 14:18:29,016 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 14:18:29,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 76.2s TimeCoverageRelationStatistics Valid=57, Invalid=124, Unknown=5, NotChecked=24, Total=210 [2020-10-24 14:18:29,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 14:18:29,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 14:18:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 14:18:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 14:18:29,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-24 14:18:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:29,018 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 14:18:29,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 14:18:29,018 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 14:18:29,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 14:18:29,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 14:18:29,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 14:18:29,227 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 14:18:29,227 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 14:18:29,227 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 14:18:29,227 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 14:18:29,228 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-24 14:18:29,228 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-24 14:18:29,228 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-24 14:18:29,228 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-10-24 14:18:29,228 INFO L274 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2020-10-24 14:18:29,229 INFO L274 CegarLoopResult]: For program point L6(lines 6 15) no Hoare annotation was computed. [2020-10-24 14:18:29,229 INFO L274 CegarLoopResult]: For program point L10-5(line 10) no Hoare annotation was computed. [2020-10-24 14:18:29,229 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-24 14:18:29,229 INFO L274 CegarLoopResult]: For program point L10-7(line 10) no Hoare annotation was computed. [2020-10-24 14:18:29,229 INFO L274 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-10-24 14:18:29,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:18:29 BoogieIcfgContainer [2020-10-24 14:18:29,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:18:29,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:18:29,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:18:29,236 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:18:29,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:34" (3/4) ... [2020-10-24 14:18:29,241 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 14:18:29,254 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-24 14:18:29,254 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 14:18:29,255 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-24 14:18:29,255 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 14:18:29,326 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 14:18:29,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:18:29,328 INFO L168 Benchmark]: Toolchain (without parser) took 116016.60 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.1 MB in the beginning and 22.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:29,330 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 37.7 MB. Free memory was 18.2 MB in the beginning and 18.1 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:18:29,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.71 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 36.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:29,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 35.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:29,335 INFO L168 Benchmark]: Boogie Preprocessor took 45.72 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 33.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:29,336 INFO L168 Benchmark]: RCFGBuilder took 938.36 ms. Allocated memory is still 54.5 MB. Free memory was 33.8 MB in the beginning and 36.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:29,337 INFO L168 Benchmark]: TraceAbstraction took 114564.19 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.2 MB in the beginning and 24.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:29,340 INFO L168 Benchmark]: Witness Printer took 90.89 ms. Allocated memory is still 67.1 MB. Free memory was 24.4 MB in the beginning and 22.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:29,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 37.7 MB. Free memory was 18.2 MB in the beginning and 18.1 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.71 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 36.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 35.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.72 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 33.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 938.36 ms. Allocated memory is still 54.5 MB. Free memory was 33.8 MB in the beginning and 36.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 114564.19 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.2 MB in the beginning and 24.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * Witness Printer took 90.89 ms. Allocated memory is still 67.1 MB. Free memory was 24.4 MB in the beginning and 22.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 114.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 42.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 32 SDslu, 8 SDs, 0 SdLazy, 55 SolverSat, 24 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 91.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 70.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 15 QuantifiedInterpolants, 10640 SizeOfPredicates, 10 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...