/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:19:48,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:19:48,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:19:48,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:19:48,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:19:48,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:19:48,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:19:48,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:19:48,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:19:48,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:19:48,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:19:48,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:19:48,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:19:48,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:19:48,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:19:48,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:19:48,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:19:48,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:19:48,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:19:48,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:19:48,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:19:48,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:19:48,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:19:48,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:19:48,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:19:48,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:19:48,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:19:48,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:19:48,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:19:48,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:19:48,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:19:48,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:19:48,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:19:48,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:19:48,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:19:48,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:19:48,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:19:48,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:19:48,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:19:48,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:19:48,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:19:48,520 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 [2020-09-21 12:19:48,569 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:19:48,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:19:48,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:19:48,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:19:48,574 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:19:48,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:19:48,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:19:48,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:19:48,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:19:48,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:19:48,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:19:48,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:19:48,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:19:48,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:19:48,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:19:48,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:19:48,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:19:48,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:19:48,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:19:48,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:19:48,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:19:48,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:19:48,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:19:48,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:19:48,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:19:48,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:19:48,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:19:48,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:19:48,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:19:48,582 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:19:49,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:19:49,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:19:49,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:19:49,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:19:49,068 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:19:49,069 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp7.c [2020-09-21 12:19:49,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cbc594ed/0f45cf06086e4202aa9a8b43175af9e9/FLAGd913c0a61 [2020-09-21 12:19:49,667 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:19:49,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp7.c [2020-09-21 12:19:49,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cbc594ed/0f45cf06086e4202aa9a8b43175af9e9/FLAGd913c0a61 [2020-09-21 12:19:50,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cbc594ed/0f45cf06086e4202aa9a8b43175af9e9 [2020-09-21 12:19:50,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:19:50,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:19:50,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:19:50,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:19:50,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:19:50,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a43b6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50, skipping insertion in model container [2020-09-21 12:19:50,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:19:50,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:19:50,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:19:50,318 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:19:50,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:19:50,354 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:19:50,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50 WrapperNode [2020-09-21 12:19:50,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:19:50,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:19:50,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:19:50,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:19:50,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (1/1) ... [2020-09-21 12:19:50,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:19:50,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:19:50,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:19:50,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:19:50,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (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 [2020-09-21 12:19:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:19:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:19:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:19:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:19:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:19:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:19:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:19:50,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:19:50,719 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:19:50,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:19:50 BoogieIcfgContainer [2020-09-21 12:19:50,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:19:50,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:19:50,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:19:50,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:19:50,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:19:50" (1/3) ... [2020-09-21 12:19:50,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7257d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:19:50, skipping insertion in model container [2020-09-21 12:19:50,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:19:50" (2/3) ... [2020-09-21 12:19:50,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7257d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:19:50, skipping insertion in model container [2020-09-21 12:19:50,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:19:50" (3/3) ... [2020-09-21 12:19:50,733 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp7.c [2020-09-21 12:19:50,743 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:19:50,753 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:19:50,775 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:19:50,807 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:19:50,807 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:19:50,807 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:19:50,807 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:19:50,808 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:19:50,808 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:19:50,808 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:19:50,808 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:19:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-09-21 12:19:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-21 12:19:50,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:19:50,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:19:50,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:19:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:19:50,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2020-09-21 12:19:50,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:19:50,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812940227] [2020-09-21 12:19:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:19:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:19:50,959 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:19:50,960 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:19:50,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:19:50,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:19:50 BoogieIcfgContainer [2020-09-21 12:19:50,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:19:50,982 INFO L168 Benchmark]: Toolchain (without parser) took 937.24 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 105.5 MB in the beginning and 162.0 MB in the end (delta: -56.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:19:50,984 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:19:50,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.28 ms. Allocated memory is still 141.6 MB. Free memory was 104.8 MB in the beginning and 94.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:19:50,986 INFO L168 Benchmark]: Boogie Preprocessor took 111.04 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 94.4 MB in the beginning and 183.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:19:50,987 INFO L168 Benchmark]: RCFGBuilder took 256.32 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 173.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:19:50,988 INFO L168 Benchmark]: TraceAbstraction took 254.20 ms. Allocated memory is still 205.0 MB. Free memory was 173.3 MB in the beginning and 162.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:19:50,992 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 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.28 ms. Allocated memory is still 141.6 MB. Free memory was 104.8 MB in the beginning and 94.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.04 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 94.4 MB in the beginning and 183.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.32 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 173.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254.20 ms. Allocated memory is still 205.0 MB. Free memory was 173.3 MB in the beginning and 162.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 8, overapproximation of someUnaryFLOAToperation at line 5. Possible FailurePath: [L4] float f = 0x1.9e0c22p-101f; [L5] float g = -0x1.3c9014p-50f; [L6] float target = -0x1p-149f; [L8] float result = f * g; [L10] COND TRUE !(result == target) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 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=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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...