./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cdc4d12f446be57385f35c672efbdd6980b00fa ......................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cdc4d12f446be57385f35c672efbdd6980b00fa ............................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-27 23:36:51,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:36:51,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:36:51,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:36:51,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:36:51,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:36:51,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:36:51,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:36:51,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:36:51,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:36:51,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:36:51,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:36:51,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:36:51,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:36:51,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:36:51,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:36:51,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:36:51,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:36:51,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:36:51,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:36:51,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:36:51,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:36:51,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:36:51,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:36:51,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:36:51,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:36:51,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:36:51,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:36:51,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:36:51,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:36:51,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:36:51,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:36:51,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:36:51,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:36:51,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:36:51,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:36:51,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:36:51,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:36:51,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:36:51,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:36:51,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:36:51,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:36:51,292 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:36:51,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:36:51,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:36:51,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:36:51,295 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:36:51,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:36:51,295 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:36:51,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:36:51,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:36:51,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:36:51,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:36:51,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:36:51,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:36:51,297 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:36:51,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:36:51,298 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:36:51,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:36:51,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:36:51,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:36:51,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:36:51,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:36:51,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:36:51,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:36:51,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:36:51,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:36:51,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:36:51,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:36:51,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:36:51,301 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(__VERIFIER_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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2019-11-27 23:36:51,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:36:51,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:36:51,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:36:51,630 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:36:51,630 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:36:51,631 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-27 23:36:51,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958661049/28ac500c663c467bb422c50b9c67c268/FLAGb769f5d31 [2019-11-27 23:36:52,114 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:36:52,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-27 23:36:52,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958661049/28ac500c663c467bb422c50b9c67c268/FLAGb769f5d31 [2019-11-27 23:36:52,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958661049/28ac500c663c467bb422c50b9c67c268 [2019-11-27 23:36:52,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:36:52,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:36:52,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:52,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:36:52,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:36:52,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52, skipping insertion in model container [2019-11-27 23:36:52,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:36:52,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:36:52,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:52,785 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:36:52,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:52,820 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:36:52,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52 WrapperNode [2019-11-27 23:36:52,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:52,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:52,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:36:52,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:36:52,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:52,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:36:52,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:36:52,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:36:52,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (1/1) ... [2019-11-27 23:36:52,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:36:52,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:36:52,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:36:52,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:36:52,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (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 [2019-11-27 23:36:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:36:53,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:36:53,211 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:36:53,212 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:36:53,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:53 BoogieIcfgContainer [2019-11-27 23:36:53,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:36:53,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:36:53,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:36:53,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:36:53,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:36:52" (1/3) ... [2019-11-27 23:36:53,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39db5453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:53, skipping insertion in model container [2019-11-27 23:36:53,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:52" (2/3) ... [2019-11-27 23:36:53,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39db5453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:53, skipping insertion in model container [2019-11-27 23:36:53,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:53" (3/3) ... [2019-11-27 23:36:53,220 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2019-11-27 23:36:53,228 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:36:53,234 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:36:53,246 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:36:53,273 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:36:53,273 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:36:53,274 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:36:53,274 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:36:53,274 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:36:53,275 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:36:53,275 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:36:53,277 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:36:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-27 23:36:53,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:36:53,296 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:36:53,297 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:36:53,298 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:36:53,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:36:53,302 INFO L82 PathProgramCache]: Analyzing trace with hash 957382, now seen corresponding path program 1 times [2019-11-27 23:36:53,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:36:53,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725303681] [2019-11-27 23:36:53,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:36:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:53,405 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:36:53,406 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:36:53,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:36:53 BoogieIcfgContainer [2019-11-27 23:36:53,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:36:53,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:36:53,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:36:53,424 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:36:53,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:53" (3/4) ... [2019-11-27 23:36:53,428 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:36:53,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:36:53,431 INFO L168 Benchmark]: Toolchain (without parser) took 897.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -125.2 MB). Peak memory consumption was 147.7 kB. Max. memory is 11.5 GB. [2019-11-27 23:36:53,432 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:53,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.85 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:53,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:53,435 INFO L168 Benchmark]: Boogie Preprocessor took 20.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:53,436 INFO L168 Benchmark]: RCFGBuilder took 251.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:53,437 INFO L168 Benchmark]: TraceAbstraction took 209.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:53,437 INFO L168 Benchmark]: Witness Printer took 4.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:53,442 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 286.85 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 118.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 251.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 209.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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 0.1.24-30f4e4a [2019-11-27 23:36:55,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:36:55,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:36:55,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:36:55,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:36:55,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:36:55,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:36:55,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:36:55,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:36:55,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:36:55,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:36:55,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:36:55,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:36:55,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:36:55,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:36:55,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:36:55,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:36:55,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:36:55,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:36:55,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:36:55,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:36:55,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:36:55,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:36:55,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:36:55,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:36:55,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:36:55,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:36:55,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:36:55,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:36:55,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:36:55,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:36:55,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:36:55,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:36:55,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:36:55,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:36:55,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:36:55,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:36:55,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:36:55,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:36:55,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:36:55,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:36:55,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:36:55,492 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:36:55,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:36:55,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:36:55,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:36:55,494 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:36:55,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:36:55,495 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:36:55,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:36:55,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:36:55,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:36:55,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:36:55,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:36:55,496 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:36:55,496 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:36:55,496 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:36:55,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:36:55,497 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:36:55,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:36:55,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:36:55,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:36:55,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:36:55,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:36:55,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:36:55,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:36:55,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:36:55,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:36:55,499 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:36:55,499 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:36:55,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:36:55,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:36:55,500 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(__VERIFIER_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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2019-11-27 23:36:55,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:36:55,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:36:55,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:36:55,818 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:36:55,819 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:36:55,820 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-27 23:36:55,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd83edb5/27216b41b6c14a6b82b419331d42a20c/FLAG4daa1d733 [2019-11-27 23:36:56,325 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:36:56,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-27 23:36:56,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd83edb5/27216b41b6c14a6b82b419331d42a20c/FLAG4daa1d733 [2019-11-27 23:36:56,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd83edb5/27216b41b6c14a6b82b419331d42a20c [2019-11-27 23:36:56,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:36:56,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:36:56,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:56,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:36:56,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:36:56,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:56,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3463e911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56, skipping insertion in model container [2019-11-27 23:36:56,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:56,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:36:56,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:36:56,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:56,956 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:36:56,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:36:56,983 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:36:56,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56 WrapperNode [2019-11-27 23:36:56,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:36:56,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:56,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:36:56,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:36:56,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:36:57,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:36:57,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:36:57,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:36:57,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (1/1) ... [2019-11-27 23:36:57,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:36:57,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:36:57,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:36:57,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:36:57,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (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 [2019-11-27 23:36:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:36:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:36:57,832 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:36:57,833 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:36:57,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:57 BoogieIcfgContainer [2019-11-27 23:36:57,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:36:57,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:36:57,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:36:57,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:36:57,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:36:56" (1/3) ... [2019-11-27 23:36:57,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebaf61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:57, skipping insertion in model container [2019-11-27 23:36:57,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:56" (2/3) ... [2019-11-27 23:36:57,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebaf61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:36:57, skipping insertion in model container [2019-11-27 23:36:57,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:57" (3/3) ... [2019-11-27 23:36:57,842 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2019-11-27 23:36:57,852 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:36:57,859 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:36:57,871 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:36:57,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:36:57,895 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:36:57,895 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:36:57,895 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:36:57,895 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:36:57,895 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:36:57,896 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:36:57,896 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:36:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-27 23:36:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 23:36:57,912 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:36:57,913 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 23:36:57,913 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:36:57,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:36:57,918 INFO L82 PathProgramCache]: Analyzing trace with hash 28693796, now seen corresponding path program 1 times [2019-11-27 23:36:57,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:36:57,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224274464] [2019-11-27 23:36:57,928 INFO L94 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 [2019-11-27 23:36:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:36:58,159 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:36:58,160 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:36:58,361 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:36:58,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:36:58 BoogieIcfgContainer [2019-11-27 23:36:58,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:36:58,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:36:58,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:36:58,381 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:36:58,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:36:57" (3/4) ... [2019-11-27 23:36:58,385 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:36:58,430 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:36:58,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:36:58,433 INFO L168 Benchmark]: Toolchain (without parser) took 1691.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:58,434 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:58,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.58 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:58,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:58,436 INFO L168 Benchmark]: Boogie Preprocessor took 19.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:58,437 INFO L168 Benchmark]: RCFGBuilder took 735.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:58,438 INFO L168 Benchmark]: TraceAbstraction took 545.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:36:58,438 INFO L168 Benchmark]: Witness Printer took 49.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:36:58,443 INFO L335 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 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 241.58 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 944.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 735.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 545.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Witness Printer took 49.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...