/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/nan_float.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:04:41,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:04:41,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:04:41,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:04:41,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:04:41,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:04:41,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:04:41,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:04:41,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:04:41,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:04:41,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:04:41,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:04:41,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:04:41,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:04:41,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:04:41,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:04:41,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:04:41,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:04:41,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:04:41,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:04:41,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:04:41,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:04:41,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:04:41,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:04:41,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:04:41,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:04:41,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:04:41,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:04:41,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:04:41,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:04:41,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:04:41,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:04:41,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:04:41,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:04:41,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:04:41,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:04:41,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:04:41,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:04:41,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:04:41,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:04:41,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:04:41,384 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 [2020-09-25 11:04:41,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:04:41,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:04:41,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:04:41,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:04:41,432 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:04:41,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:04:41,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:04:41,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:04:41,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:04:41,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:04:41,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:04:41,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:04:41,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:04:41,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:04:41,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:04:41,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:04:41,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:04:41,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:04:41,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:04:41,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:04:41,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:04:41,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:04:41,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:04:41,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:04:41,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:04:41,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:04:41,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:04:41,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:04:41,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:04:41,439 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 -> SingleStatement 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; 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; 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; 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; 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; 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; [2020-09-25 11:04:41,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:04:41,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:04:41,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:04:41,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:04:41,969 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:04:41,971 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/nan_float.c [2020-09-25 11:04:42,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c778f19dc/e86ff7b17c844a5480f532a66b267c37/FLAG426bdb512 [2020-09-25 11:04:42,578 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:04:42,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/nan_float.c [2020-09-25 11:04:42,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c778f19dc/e86ff7b17c844a5480f532a66b267c37/FLAG426bdb512 [2020-09-25 11:04:42,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c778f19dc/e86ff7b17c844a5480f532a66b267c37 [2020-09-25 11:04:42,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:04:42,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:04:42,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:04:42,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:04:42,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:04:42,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:04:42" (1/1) ... [2020-09-25 11:04:42,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fcb5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:42, skipping insertion in model container [2020-09-25 11:04:42,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:04:42" (1/1) ... [2020-09-25 11:04:42,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:04:43,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:04:43,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:04:43,212 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:04:43,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:04:43,240 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:04:43,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43 WrapperNode [2020-09-25 11:04:43,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:04:43,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:04:43,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:04:43,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:04:43,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (1/1) ... [2020-09-25 11:04:43,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (1/1) ... [2020-09-25 11:04:43,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (1/1) ... [2020-09-25 11:04:43,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (1/1) ... [2020-09-25 11:04:43,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (1/1) ... [2020-09-25 11:04:43,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (1/1) ... [2020-09-25 11:04:43,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (1/1) ... [2020-09-25 11:04:43,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:04:43,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:04:43,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:04:43,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:04:43,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (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 [2020-09-25 11:04:43,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:04:43,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:04:43,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:04:43,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:04:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:04:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 11:04:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:04:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:04:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:04:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:04:43,590 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:04:43,590 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:04:43,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:04:43 BoogieIcfgContainer [2020-09-25 11:04:43,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:04:43,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:04:43,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:04:43,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:04:43,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:04:42" (1/3) ... [2020-09-25 11:04:43,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cfb8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:04:43, skipping insertion in model container [2020-09-25 11:04:43,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:43" (2/3) ... [2020-09-25 11:04:43,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cfb8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:04:43, skipping insertion in model container [2020-09-25 11:04:43,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:04:43" (3/3) ... [2020-09-25 11:04:43,605 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-09-25 11:04:43,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:04:43,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:04:43,648 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:04:43,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:04:43,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:04:43,674 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:04:43,674 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:04:43,674 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:04:43,675 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:04:43,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:04:43,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:04:43,695 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-25 11:04:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 11:04:43,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:04:43,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:04:43,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:04:43,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:04:43,708 INFO L82 PathProgramCache]: Analyzing trace with hash 772938475, now seen corresponding path program 1 times [2020-09-25 11:04:43,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:04:43,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193486789] [2020-09-25 11:04:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:04:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:04:43,823 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:04:43,823 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:04:43,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:04:43,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:04:43 BoogieIcfgContainer [2020-09-25 11:04:43,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:04:43,848 INFO L168 Benchmark]: Toolchain (without parser) took 899.35 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 101.8 MB in the beginning and 156.0 MB in the end (delta: -54.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:43,849 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:04:43,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.75 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 91.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:43,852 INFO L168 Benchmark]: Boogie Preprocessor took 98.18 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 91.5 MB in the beginning and 178.8 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:43,854 INFO L168 Benchmark]: RCFGBuilder took 254.07 ms. Allocated memory is still 199.8 MB. Free memory was 178.8 MB in the beginning and 167.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:43,855 INFO L168 Benchmark]: TraceAbstraction took 248.98 ms. Allocated memory is still 199.8 MB. Free memory was 166.7 MB in the beginning and 156.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:43,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.75 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 91.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.18 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 91.5 MB in the beginning and 178.8 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 254.07 ms. Allocated memory is still 199.8 MB. Free memory was 178.8 MB in the beginning and 167.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248.98 ms. Allocated memory is still 199.8 MB. Free memory was 166.7 MB in the beginning and 156.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13. Possible FailurePath: [L10] float x; [L11] x = __VERIFIER_nondet_float() [L13] CALL __VERIFIER_assert(x==x) [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 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=19occurred 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, 11 NumberOfCodeBlocks, 11 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...