./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square-1.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/inv_square-1.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 53d53b1526e829d58326d87a7aff591d9debe20f ...................................................................................................................................................................................................................................................................... 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/inv_square-1.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 53d53b1526e829d58326d87a7aff591d9debe20f .................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:20:03,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:20:03,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:20:03,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:20:03,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:20:03,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:20:03,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:20:03,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:20:03,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:20:03,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:20:03,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:20:03,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:20:03,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:20:03,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:20:03,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:20:03,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:20:03,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:20:03,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:20:03,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:20:03,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:20:03,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:20:03,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:20:03,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:20:03,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:20:03,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:20:03,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:20:03,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:20:03,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:20:03,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:20:03,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:20:03,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:20:03,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:20:03,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:20:03,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:20:03,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:20:03,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:20:03,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:20:03,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:20:03,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:20:03,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:20:03,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:20:03,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:20:03,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:20:03,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:20:03,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:20:03,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:20:03,243 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:20:03,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:20:03,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:20:03,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:20:03,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:20:03,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:20:03,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:20:03,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:20:03,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:20:03,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:20:03,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:20:03,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:20:03,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:20:03,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:20:03,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:20:03,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:20:03,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:20:03,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:20:03,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:20:03,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:20:03,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:20:03,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:20:03,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:20:03,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:20:03,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:20:03,252 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 -> 53d53b1526e829d58326d87a7aff591d9debe20f [2020-10-20 00:20:03,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:20:03,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:20:03,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:20:03,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:20:03,507 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:20:03,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2020-10-20 00:20:03,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0963af68f/f8ce7a020af5402ca41e6941186ccac6/FLAGb035849e4 [2020-10-20 00:20:04,052 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:20:04,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2020-10-20 00:20:04,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0963af68f/f8ce7a020af5402ca41e6941186ccac6/FLAGb035849e4 [2020-10-20 00:20:04,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0963af68f/f8ce7a020af5402ca41e6941186ccac6 [2020-10-20 00:20:04,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:20:04,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:20:04,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:04,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:20:04,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:20:04,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710eb27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04, skipping insertion in model container [2020-10-20 00:20:04,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:20:04,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:20:04,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:04,798 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:20:04,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:04,849 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:20:04,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04 WrapperNode [2020-10-20 00:20:04,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:04,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:04,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:20:04,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:20:04,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:04,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:20:04,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:20:04,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:20:04,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (1/1) ... [2020-10-20 00:20:04,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:20:04,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:20:04,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:20:04,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:20:04,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (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 00:20:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:20:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:20:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:20:05,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:20:05,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:20:05,265 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 00:20:05,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:05 BoogieIcfgContainer [2020-10-20 00:20:05,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:20:05,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:20:05,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:20:05,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:20:05,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:20:04" (1/3) ... [2020-10-20 00:20:05,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fec9d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:05, skipping insertion in model container [2020-10-20 00:20:05,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:04" (2/3) ... [2020-10-20 00:20:05,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fec9d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:05, skipping insertion in model container [2020-10-20 00:20:05,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:05" (3/3) ... [2020-10-20 00:20:05,277 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2020-10-20 00:20:05,292 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:20:05,301 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:20:05,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:20:05,375 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:20:05,376 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:20:05,376 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:20:05,376 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:20:05,376 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:20:05,377 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:20:05,377 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:20:05,377 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:20:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-20 00:20:05,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:20:05,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:05,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:20:05,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:05,408 INFO L82 PathProgramCache]: Analyzing trace with hash 889510699, now seen corresponding path program 1 times [2020-10-20 00:20:05,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:20:05,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106077717] [2020-10-20 00:20:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:20:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:20:05,557 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 00:20:05,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106077717] [2020-10-20 00:20:05,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:20:05,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:20:05,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773339595] [2020-10-20 00:20:05,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:20:05,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:20:05,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:20:05,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:20:05,579 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-10-20 00:20:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:20:05,595 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-20 00:20:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:20:05,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 00:20:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:20:05,607 INFO L225 Difference]: With dead ends: 22 [2020-10-20 00:20:05,608 INFO L226 Difference]: Without dead ends: 7 [2020-10-20 00:20:05,611 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 00:20:05,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-20 00:20:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-20 00:20:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 00:20:05,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-20 00:20:05,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-20 00:20:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:20:05,641 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-20 00:20:05,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:20:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-20 00:20:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:20:05,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:05,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:20:05,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:20:05,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:05,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:05,643 INFO L82 PathProgramCache]: Analyzing trace with hash 889570281, now seen corresponding path program 1 times [2020-10-20 00:20:05,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:20:05,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369395208] [2020-10-20 00:20:05,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:20:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:05,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:05,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:05,720 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:20:05,720 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:20:05,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:20:05,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:20:05 BoogieIcfgContainer [2020-10-20 00:20:05,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:20:05,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:20:05,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:20:05,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:20:05,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:05" (3/4) ... [2020-10-20 00:20:05,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:20:05,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:20:05,753 INFO L168 Benchmark]: Toolchain (without parser) took 1311.87 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 11.7 MB in the beginning and 15.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:05,754 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 34.6 MB. Free memory was 17.9 MB in the beginning and 17.9 MB in the end (delta: 39.8 kB). Peak memory consumption was 39.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:05,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.05 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 10.8 MB in the beginning and 27.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:05,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.56 ms. Allocated memory is still 44.6 MB. Free memory was 27.8 MB in the beginning and 26.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:05,757 INFO L168 Benchmark]: Boogie Preprocessor took 42.60 ms. Allocated memory is still 44.6 MB. Free memory was 26.2 MB in the beginning and 25.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:05,758 INFO L168 Benchmark]: RCFGBuilder took 321.83 ms. Allocated memory is still 44.6 MB. Free memory was 24.8 MB in the beginning and 23.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:05,759 INFO L168 Benchmark]: TraceAbstraction took 475.48 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 23.1 MB in the beginning and 15.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:05,760 INFO L168 Benchmark]: Witness Printer took 5.98 ms. Allocated memory is still 46.1 MB. Free memory was 15.5 MB in the beginning and 15.3 MB in the end (delta: 271.7 kB). Peak memory consumption was 271.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:05,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 34.6 MB. Free memory was 17.9 MB in the beginning and 17.9 MB in the end (delta: 39.8 kB). Peak memory consumption was 39.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 402.05 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 10.8 MB in the beginning and 27.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.56 ms. Allocated memory is still 44.6 MB. Free memory was 27.8 MB in the beginning and 26.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 42.60 ms. Allocated memory is still 44.6 MB. Free memory was 26.2 MB in the beginning and 25.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 321.83 ms. Allocated memory is still 44.6 MB. Free memory was 24.8 MB in the beginning and 23.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 475.48 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 23.1 MB in the beginning and 15.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * Witness Printer took 5.98 ms. Allocated memory is still 46.1 MB. Free memory was 15.5 MB in the beginning and 15.3 MB in the end (delta: 271.7 kB). Peak memory consumption was 271.7 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 someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] COND TRUE x != 0.f [L23] y = x * x [L13] COND TRUE !(cond) [L3] __assert_fail("0", "inv_square-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 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: 12 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=13occurred 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 0.1.25-9a8b2e8 [2020-10-20 00:20:08,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:20:08,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:20:08,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:20:08,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:20:08,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:20:08,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:20:08,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:20:08,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:20:08,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:20:08,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:20:08,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:20:08,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:20:08,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:20:08,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:20:08,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:20:08,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:20:08,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:20:08,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:20:08,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:20:08,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:20:08,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:20:08,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:20:08,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:20:08,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:20:08,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:20:08,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:20:08,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:20:08,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:20:08,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:20:08,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:20:08,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:20:08,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:20:08,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:20:08,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:20:08,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:20:08,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:20:08,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:20:08,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:20:08,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:20:08,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:20:08,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:20:08,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:20:08,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:20:08,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:20:08,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:20:08,158 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:20:08,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:20:08,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:20:08,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:20:08,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:20:08,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:20:08,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:20:08,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:20:08,161 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:20:08,161 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:20:08,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:20:08,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:20:08,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:20:08,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:20:08,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:20:08,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:20:08,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:20:08,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:20:08,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:20:08,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:20:08,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:20:08,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:20:08,164 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:20:08,164 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:20:08,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:20:08,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:20:08,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:20:08,165 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 -> 53d53b1526e829d58326d87a7aff591d9debe20f [2020-10-20 00:20:08,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:20:08,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:20:08,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:20:08,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:20:08,392 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:20:08,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2020-10-20 00:20:08,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fde69293/c1023825e81745d8bc32843d969bc6e0/FLAG2c73dc727 [2020-10-20 00:20:08,927 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:20:08,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2020-10-20 00:20:08,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fde69293/c1023825e81745d8bc32843d969bc6e0/FLAG2c73dc727 [2020-10-20 00:20:09,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fde69293/c1023825e81745d8bc32843d969bc6e0 [2020-10-20 00:20:09,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:20:09,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:20:09,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:09,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:20:09,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:20:09,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a944a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09, skipping insertion in model container [2020-10-20 00:20:09,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:20:09,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:20:09,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:09,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:20:09,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:09,666 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:20:09,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09 WrapperNode [2020-10-20 00:20:09,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:09,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:09,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:20:09,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:20:09,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:09,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:20:09,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:20:09,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:20:09,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (1/1) ... [2020-10-20 00:20:09,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:20:09,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:20:09,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:20:09,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:20:09,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (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 00:20:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:20:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:20:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:20:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:20:10,586 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:20:10,587 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 00:20:10,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:10 BoogieIcfgContainer [2020-10-20 00:20:10,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:20:10,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:20:10,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:20:10,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:20:10,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:20:09" (1/3) ... [2020-10-20 00:20:10,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343ca8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:10, skipping insertion in model container [2020-10-20 00:20:10,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:09" (2/3) ... [2020-10-20 00:20:10,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343ca8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:10, skipping insertion in model container [2020-10-20 00:20:10,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:10" (3/3) ... [2020-10-20 00:20:10,599 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2020-10-20 00:20:10,611 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:20:10,618 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:20:10,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:20:10,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:20:10,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:20:10,659 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:20:10,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:20:10,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:20:10,660 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:20:10,660 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:20:10,660 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:20:10,675 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-20 00:20:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:20:10,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:10,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:20:10,681 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:10,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:10,686 INFO L82 PathProgramCache]: Analyzing trace with hash 889510699, now seen corresponding path program 1 times [2020-10-20 00:20:10,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:20:10,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617832561] [2020-10-20 00:20:10,698 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 00:20:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:20:10,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:20:10,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:20:10,887 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 00:20:10,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:20:10,891 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 00:20:10,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617832561] [2020-10-20 00:20:10,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:20:10,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:20:10,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035616228] [2020-10-20 00:20:10,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:20:10,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:20:10,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:20:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:20:10,918 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-10-20 00:20:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:20:10,935 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-20 00:20:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:20:10,937 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-20 00:20:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:20:10,947 INFO L225 Difference]: With dead ends: 22 [2020-10-20 00:20:10,947 INFO L226 Difference]: Without dead ends: 7 [2020-10-20 00:20:10,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:20:10,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-10-20 00:20:10,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-20 00:20:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 00:20:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-10-20 00:20:10,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-10-20 00:20:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:20:10,978 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-10-20 00:20:10,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:20:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-10-20 00:20:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:20:10,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:10,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:20:11,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:20:11,181 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:11,182 INFO L82 PathProgramCache]: Analyzing trace with hash 889570281, now seen corresponding path program 1 times [2020-10-20 00:20:11,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:20:11,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945279061] [2020-10-20 00:20:11,184 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 00:20:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:11,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:11,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:11,399 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:20:11,400 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:20:11,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:20:11,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:20:11 BoogieIcfgContainer [2020-10-20 00:20:11,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:20:11,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:20:11,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:20:11,630 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:20:11,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:10" (3/4) ... [2020-10-20 00:20:11,632 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:20:11,675 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:20:11,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:20:11,678 INFO L168 Benchmark]: Toolchain (without parser) took 2395.06 ms. Allocated memory was 35.7 MB in the beginning and 45.1 MB in the end (delta: 9.4 MB). Free memory was 13.3 MB in the beginning and 23.3 MB in the end (delta: -10.0 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:20:11,679 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 19.2 MB in the beginning and 19.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:11,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.80 ms. Allocated memory was 35.7 MB in the beginning and 43.0 MB in the end (delta: 7.3 MB). Free memory was 12.5 MB in the beginning and 25.8 MB in the end (delta: -13.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:11,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.27 ms. Allocated memory is still 43.0 MB. Free memory was 25.6 MB in the beginning and 23.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:11,682 INFO L168 Benchmark]: Boogie Preprocessor took 27.70 ms. Allocated memory is still 43.0 MB. Free memory was 23.9 MB in the beginning and 22.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:11,683 INFO L168 Benchmark]: RCFGBuilder took 850.17 ms. Allocated memory was 43.0 MB in the beginning and 42.5 MB in the end (delta: -524.3 kB). Free memory was 22.5 MB in the beginning and 20.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:11,683 INFO L168 Benchmark]: TraceAbstraction took 1038.81 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 19.7 MB in the beginning and 25.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:11,684 INFO L168 Benchmark]: Witness Printer took 46.63 ms. Allocated memory is still 45.1 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 00:20:11,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 19.2 MB in the beginning and 19.1 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 378.80 ms. Allocated memory was 35.7 MB in the beginning and 43.0 MB in the end (delta: 7.3 MB). Free memory was 12.5 MB in the beginning and 25.8 MB in the end (delta: -13.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.27 ms. Allocated memory is still 43.0 MB. Free memory was 25.6 MB in the beginning and 23.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.70 ms. Allocated memory is still 43.0 MB. Free memory was 23.9 MB in the beginning and 22.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 850.17 ms. Allocated memory was 43.0 MB in the beginning and 42.5 MB in the end (delta: -524.3 kB). Free memory was 22.5 MB in the beginning and 20.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1038.81 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 19.7 MB in the beginning and 25.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * Witness Printer took 46.63 ms. Allocated memory is still 45.1 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] COND TRUE x != 0.f [L23] y = x * x [L13] COND TRUE !(cond) [L3] __assert_fail("0", "inv_square-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 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 proved your program to be incorrect! Received shutdown request...