/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:19:45,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:19:45,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:19:45,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:19:45,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:19:45,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:19:45,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:19:45,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:19:45,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:19:45,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:19:45,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:19:45,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:19:45,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:19:45,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:19:45,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:19:45,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:19:45,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:19:45,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:19:45,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:19:45,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:19:45,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:19:45,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:19:45,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:19:45,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:19:45,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:19:45,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:19:45,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:19:45,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:19:45,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:19:45,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:19:45,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:19:45,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:19:45,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:19:45,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:19:45,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:19:45,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:19:45,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:19:45,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:19:45,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:19:45,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:19:45,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:19:45,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:19:45,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:19:45,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:19:45,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:19:45,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:19:45,367 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:19:45,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:19:45,367 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:19:45,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:19:45,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:19:45,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:19:45,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:19:45,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:19:45,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:19:45,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:19:45,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:19:45,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:19:45,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:19:45,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:19:45,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:19:45,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:19:45,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:19:45,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:19:45,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:19:45,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:19:45,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:19:45,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:19:45,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:19:45,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:19:45,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:19:45,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:19:45,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:19:45,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:19:45,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:19:45,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:19:45,743 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:19:45,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float13.c [2020-10-14 23:19:45,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef96b9dd4/54fda9af5f9a41438b2edcecd3426d46/FLAG2c6e7a19b [2020-10-14 23:19:46,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:19:46,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float13.c [2020-10-14 23:19:46,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef96b9dd4/54fda9af5f9a41438b2edcecd3426d46/FLAG2c6e7a19b [2020-10-14 23:19:46,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef96b9dd4/54fda9af5f9a41438b2edcecd3426d46 [2020-10-14 23:19:46,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:19:46,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:19:46,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:46,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:19:46,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:19:46,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:46,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66df4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46, skipping insertion in model container [2020-10-14 23:19:46,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:46,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:19:46,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:19:46,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:46,845 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:19:46,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:46,879 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:19:46,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46 WrapperNode [2020-10-14 23:19:46,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:46,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:19:46,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:19:46,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:19:46,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:46,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:46,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:46,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:46,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:47,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:47,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (1/1) ... [2020-10-14 23:19:47,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:19:47,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:19:47,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:19:47,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:19:47,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:19:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:19:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:19:47,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:19:47,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:19:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:19:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:19:47,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:19:47,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:19:47,292 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 23:19:47,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:47 BoogieIcfgContainer [2020-10-14 23:19:47,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:19:47,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:19:47,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:19:47,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:19:47,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:19:46" (1/3) ... [2020-10-14 23:19:47,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e47dda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:47, skipping insertion in model container [2020-10-14 23:19:47,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:46" (2/3) ... [2020-10-14 23:19:47,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e47dda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:47, skipping insertion in model container [2020-10-14 23:19:47,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:47" (3/3) ... [2020-10-14 23:19:47,305 INFO L109 eAbstractionObserver]: Analyzing ICFG float13.c [2020-10-14 23:19:47,317 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:19:47,324 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-14 23:19:47,343 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-14 23:19:47,374 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:19:47,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:19:47,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:19:47,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:19:47,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:19:47,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:19:47,375 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:19:47,375 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:19:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-14 23:19:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-14 23:19:47,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:47,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:19:47,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:47,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:47,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1459462506, now seen corresponding path program 1 times [2020-10-14 23:19:47,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:47,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111440794] [2020-10-14 23:19:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:19:47,545 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:19:47,545 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:19:47,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:19:47,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:19:47 BoogieIcfgContainer [2020-10-14 23:19:47,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:19:47,572 INFO L168 Benchmark]: Toolchain (without parser) took 915.13 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 103.3 MB in the beginning and 155.3 MB in the end (delta: -51.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:47,574 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:19:47,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.56 ms. Allocated memory is still 146.8 MB. Free memory was 103.3 MB in the beginning and 93.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:47,576 INFO L168 Benchmark]: Boogie Preprocessor took 127.85 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.3 MB in the beginning and 181.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:47,577 INFO L168 Benchmark]: RCFGBuilder took 288.64 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 166.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:47,580 INFO L168 Benchmark]: TraceAbstraction took 263.16 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 155.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:47,588 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 224.56 ms. Allocated memory is still 146.8 MB. Free memory was 103.3 MB in the beginning and 93.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.85 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.3 MB in the beginning and 181.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.64 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 166.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263.16 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 155.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 3. Possible FailurePath: [L3] const float plus_infinity = 1.0f/0.0f; [L4] const float minus_infinity = 0.0f/-0.0f; [L5] const float NaN = 0.0f * (1.0f/0.0f); [L9] _Bool temp; [L12] temp = NaN < plus_infinity [L13] COND TRUE !(!temp) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 8 NumberOfCodeBlocks, 8 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, 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...