./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_tight.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_tight.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 92269a31b3f4041d2f8501c63b7af13f5ed1a7b5 ....................................................................................................................................................................................................................................................................... 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_tight.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 92269a31b3f4041d2f8501c63b7af13f5ed1a7b5 ......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:23:40,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:23:40,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:23:40,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:23:40,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:23:40,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:23:40,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:23:40,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:23:40,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:23:40,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:23:40,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:23:40,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:23:40,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:23:40,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:23:40,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:23:40,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:23:40,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:23:40,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:23:40,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:23:40,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:23:40,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:23:40,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:23:40,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:23:40,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:23:40,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:23:40,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:23:40,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:23:40,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:23:40,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:23:40,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:23:40,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:23:40,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:23:40,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:23:40,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:23:40,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:23:40,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:23:40,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:23:40,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:23:40,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:23:40,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:23:40,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:23:40,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:23:40,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:23:40,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:23:40,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:23:40,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:23:40,256 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:23:40,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:23:40,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:23:40,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:23:40,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:23:40,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:23:40,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:23:40,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:23:40,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:23:40,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:23:40,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:23:40,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:23:40,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:23:40,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:23:40,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:23:40,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:23:40,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:23:40,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:23:40,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:23:40,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:23:40,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:23:40,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:23:40,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:23:40,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:23:40,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:23:40,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 92269a31b3f4041d2f8501c63b7af13f5ed1a7b5 [2020-10-20 00:23:40,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:23:40,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:23:40,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:23:40,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:23:40,489 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:23:40,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2020-10-20 00:23:40,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68534ec89/fa9a0cd469104301b73d0a9dce007daf/FLAG14c7af4a0 [2020-10-20 00:23:41,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:23:41,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2020-10-20 00:23:41,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68534ec89/fa9a0cd469104301b73d0a9dce007daf/FLAG14c7af4a0 [2020-10-20 00:23:41,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68534ec89/fa9a0cd469104301b73d0a9dce007daf [2020-10-20 00:23:41,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:23:41,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:23:41,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:23:41,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:23:41,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:23:41,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784d15e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41, skipping insertion in model container [2020-10-20 00:23:41,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:23:41,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:23:41,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:23:41,614 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:23:41,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:23:41,649 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:23:41,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41 WrapperNode [2020-10-20 00:23:41,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:23:41,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:23:41,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:23:41,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:23:41,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:23:41,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:23:41,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:23:41,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:23:41,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... [2020-10-20 00:23:41,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:23:41,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:23:41,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:23:41,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:23:41,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:23:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:23:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:23:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:23:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:23:41,995 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:23:41,995 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 00:23:41,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:41 BoogieIcfgContainer [2020-10-20 00:23:41,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:23:41,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:23:41,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:23:42,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:23:42,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:23:41" (1/3) ... [2020-10-20 00:23:42,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69351b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:23:42, skipping insertion in model container [2020-10-20 00:23:42,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:41" (2/3) ... [2020-10-20 00:23:42,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69351b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:23:42, skipping insertion in model container [2020-10-20 00:23:42,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:41" (3/3) ... [2020-10-20 00:23:42,007 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2020-10-20 00:23:42,019 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:23:42,027 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:23:42,046 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:23:42,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:23:42,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:23:42,078 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:23:42,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:23:42,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:23:42,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:23:42,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:23:42,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:23:42,121 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:23:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:23:42,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:23:42,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:23:42,131 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:23:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:23:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2020-10-20 00:23:42,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:23:42,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949282011] [2020-10-20 00:23:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:23:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:23:42,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949282011] [2020-10-20 00:23:42,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:23:42,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:23:42,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035629023] [2020-10-20 00:23:42,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:23:42,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:23:42,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:23:42,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:23:42,307 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:23:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:23:42,321 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-20 00:23:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:23:42,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:23:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:23:42,332 INFO L225 Difference]: With dead ends: 24 [2020-10-20 00:23:42,333 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:23:42,336 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 [2020-10-20 00:23:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:23:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:23:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:23:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 00:23:42,373 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-10-20 00:23:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:23:42,373 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 00:23:42,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:23:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 00:23:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:23:42,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:23:42,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:23:42,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:23:42,375 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:23:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:23:42,376 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2020-10-20 00:23:42,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:23:42,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804728051] [2020-10-20 00:23:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:23:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:23:42,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:23:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:23:42,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:23:42,464 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:23:42,464 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:23:42,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:23:42,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:23:42 BoogieIcfgContainer [2020-10-20 00:23:42,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:23:42,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:23:42,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:23:42,498 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:23:42,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:41" (3/4) ... [2020-10-20 00:23:42,503 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:23:42,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:23:42,507 INFO L168 Benchmark]: Toolchain (without parser) took 1121.04 ms. Allocated memory was 43.0 MB in the beginning and 46.1 MB in the end (delta: 3.1 MB). Free memory was 25.3 MB in the beginning and 27.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:42,510 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 33.0 MB. Free memory was 12.6 MB in the beginning and 12.5 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:23:42,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.71 ms. Allocated memory is still 43.0 MB. Free memory was 24.5 MB in the beginning and 13.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:42,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.25 ms. Allocated memory is still 43.0 MB. Free memory was 13.8 MB in the beginning and 12.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:42,513 INFO L168 Benchmark]: Boogie Preprocessor took 30.39 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 12.2 MB in the beginning and 25.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:42,514 INFO L168 Benchmark]: RCFGBuilder took 276.21 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 14.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:42,515 INFO L168 Benchmark]: TraceAbstraction took 497.98 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 13.6 MB in the beginning and 27.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:23:42,516 INFO L168 Benchmark]: Witness Printer took 6.55 ms. Allocated memory is still 46.1 MB. Free memory was 27.5 MB in the beginning and 27.2 MB in the end (delta: 311.0 kB). Peak memory consumption was 311.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:23:42,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 33.0 MB. Free memory was 12.6 MB in the beginning and 12.5 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 260.71 ms. Allocated memory is still 43.0 MB. Free memory was 24.5 MB in the beginning and 13.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 39.25 ms. Allocated memory is still 43.0 MB. Free memory was 13.8 MB in the beginning and 12.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.39 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 12.2 MB in the beginning and 25.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 276.21 ms. Allocated memory is still 43.5 MB. Free memory was 25.7 MB in the beginning and 14.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 497.98 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 13.6 MB in the beginning and 27.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Witness Printer took 6.55 ms. Allocated memory is still 46.1 MB. Free memory was 27.5 MB in the beginning and 27.2 MB in the end (delta: 311.0 kB). Peak memory consumption was 311.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L14] COND TRUE !(cond) [L3] __assert_fail("0", "zonotope_tight.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 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=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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 0.1.25-9a8b2e8 [2020-10-20 00:23:44,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:23:44,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:23:44,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:23:44,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:23:44,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:23:44,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:23:44,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:23:44,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:23:44,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:23:44,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:23:44,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:23:44,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:23:44,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:23:44,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:23:44,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:23:44,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:23:44,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:23:44,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:23:44,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:23:44,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:23:44,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:23:44,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:23:44,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:23:44,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:23:44,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:23:44,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:23:44,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:23:44,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:23:44,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:23:44,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:23:44,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:23:44,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:23:44,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:23:44,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:23:44,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:23:44,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:23:44,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:23:44,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:23:44,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:23:44,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:23:44,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:23:44,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:23:44,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:23:44,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:23:44,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:23:44,930 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:23:44,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:23:44,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:23:44,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:23:44,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:23:44,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:23:44,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:23:44,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:23:44,932 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:23:44,932 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:23:44,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:23:44,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:23:44,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:23:44,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:23:44,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:23:44,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:23:44,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:23:44,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:23:44,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:23:44,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:23:44,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:23:44,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:23:44,935 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:23:44,935 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:23:44,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:23:44,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:23:44,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:23:44,936 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 92269a31b3f4041d2f8501c63b7af13f5ed1a7b5 [2020-10-20 00:23:45,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:23:45,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:23:45,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:23:45,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:23:45,164 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:23:45,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2020-10-20 00:23:45,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658d5d9f9/451c07e6ba184bdc87f7efcf3a8944d3/FLAG9e0351c6b [2020-10-20 00:23:45,673 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:23:45,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2020-10-20 00:23:45,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658d5d9f9/451c07e6ba184bdc87f7efcf3a8944d3/FLAG9e0351c6b [2020-10-20 00:23:46,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/658d5d9f9/451c07e6ba184bdc87f7efcf3a8944d3 [2020-10-20 00:23:46,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:23:46,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:23:46,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:23:46,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:23:46,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:23:46,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d0a8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46, skipping insertion in model container [2020-10-20 00:23:46,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:23:46,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:23:46,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:23:46,460 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:23:46,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:23:46,500 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:23:46,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46 WrapperNode [2020-10-20 00:23:46,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:23:46,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:23:46,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:23:46,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:23:46,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:23:46,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:23:46,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:23:46,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:23:46,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... [2020-10-20 00:23:46,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:23:46,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:23:46,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:23:46,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:23:46,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:23:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:23:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:23:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:23:46,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:23:51,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:23:51,191 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 00:23:51,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:51 BoogieIcfgContainer [2020-10-20 00:23:51,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:23:51,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:23:51,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:23:51,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:23:51,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:23:46" (1/3) ... [2020-10-20 00:23:51,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5aa6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:23:51, skipping insertion in model container [2020-10-20 00:23:51,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:23:46" (2/3) ... [2020-10-20 00:23:51,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5aa6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:23:51, skipping insertion in model container [2020-10-20 00:23:51,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:51" (3/3) ... [2020-10-20 00:23:51,201 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2020-10-20 00:23:51,213 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:23:51,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:23:51,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:23:51,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:23:51,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:23:51,260 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:23:51,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:23:51,261 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:23:51,261 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:23:51,261 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:23:51,261 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:23:51,276 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:23:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:23:51,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:23:51,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:23:51,283 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:23:51,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:23:51,289 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2020-10-20 00:23:51,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:23:51,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725805285] [2020-10-20 00:23:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:23:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:51,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:23:51,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:23:51,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:23:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:23:51,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725805285] [2020-10-20 00:23:51,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:23:51,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:23:51,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111894639] [2020-10-20 00:23:51,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:23:51,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:23:51,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:23:51,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:23:51,846 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:23:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:23:51,859 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-20 00:23:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:23:51,861 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:23:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:23:51,870 INFO L225 Difference]: With dead ends: 24 [2020-10-20 00:23:51,870 INFO L226 Difference]: Without dead ends: 9 [2020-10-20 00:23:51,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:23:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-20 00:23:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-20 00:23:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-20 00:23:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-20 00:23:51,905 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-10-20 00:23:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:23:51,905 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-20 00:23:51,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:23:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-20 00:23:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:23:51,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:23:51,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:23:52,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:23:52,121 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:23:52,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:23:52,122 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2020-10-20 00:23:52,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:23:52,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440114188] [2020-10-20 00:23:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:23:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:52,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:23:52,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:52,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440114188] [2020-10-20 00:23:52,773 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:23:52,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [206993765] [2020-10-20 00:23:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:23:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:23:54,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 00:23:54,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:23:54,207 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:23:54,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657135351] [2020-10-20 00:23:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:24:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:24:09,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:24:09,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:24:09,868 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:24:09,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:24:09,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:24:09,869 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:24:09,869 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:24:10,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:24:10,500 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:24:10,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:24:10 BoogieIcfgContainer [2020-10-20 00:24:10,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:24:10,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:24:10,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:24:10,501 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:24:10,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:23:51" (3/4) ... [2020-10-20 00:24:10,509 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:24:10,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:24:10,514 INFO L168 Benchmark]: Toolchain (without parser) took 24447.49 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 15.2 MB in the beginning and 23.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:24:10,515 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 33.6 MB. Free memory was 9.6 MB in the beginning and 9.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:24:10,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.76 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 14.4 MB in the beginning and 25.1 MB in the end (delta: -10.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:24:10,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.05 ms. Allocated memory is still 44.0 MB. Free memory was 25.1 MB in the beginning and 23.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:24:10,518 INFO L168 Benchmark]: Boogie Preprocessor took 33.79 ms. Allocated memory is still 44.0 MB. Free memory was 23.3 MB in the beginning and 21.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:24:10,519 INFO L168 Benchmark]: RCFGBuilder took 4610.95 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 21.8 MB in the beginning and 20.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:24:10,521 INFO L168 Benchmark]: TraceAbstraction took 19306.31 ms. Allocated memory was 45.6 MB in the beginning and 46.1 MB in the end (delta: 524.3 kB). Free memory was 20.0 MB in the beginning and 24.4 MB in the end (delta: -4.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:24:10,522 INFO L168 Benchmark]: Witness Printer took 10.38 ms. Allocated memory is still 46.1 MB. Free memory was 24.4 MB in the beginning and 23.8 MB in the end (delta: 568.9 kB). Peak memory consumption was 568.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:24:10,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 33.6 MB. Free memory was 9.6 MB in the beginning and 9.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 428.76 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 14.4 MB in the beginning and 25.1 MB in the end (delta: -10.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 46.05 ms. Allocated memory is still 44.0 MB. Free memory was 25.1 MB in the beginning and 23.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 33.79 ms. Allocated memory is still 44.0 MB. Free memory was 23.3 MB in the beginning and 21.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 4610.95 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 21.8 MB in the beginning and 20.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 19306.31 ms. Allocated memory was 45.6 MB in the beginning and 46.1 MB in the end (delta: 524.3 kB). Free memory was 20.0 MB in the beginning and 24.4 MB in the end (delta: -4.4 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 10.38 ms. Allocated memory is still 46.1 MB. Free memory was 24.4 MB in the beginning and 23.8 MB in the end (delta: 568.9 kB). Peak memory consumption was 568.9 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L14] COND TRUE !(cond) [L3] __assert_fail("0", "zonotope_tight.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 19.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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...