/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:53,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:53,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:53,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:53,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:53,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:53,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:53,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:53,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:53,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:53,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:53,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:53,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:53,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:53,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:53,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:53,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:53,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:53,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:53,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:53,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:53,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:53,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:53,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:53,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:53,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:53,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:53,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:53,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:53,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:53,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:53,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:53,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:53,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:53,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:53,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:53,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:53,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:53,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:53,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:53,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:53,729 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 [2020-09-24 20:22:53,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:53,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:53,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:53,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:53,761 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:53,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:53,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:53,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:53,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:53,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:53,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:53,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:53,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:53,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:53,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:53,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:53,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:53,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:53,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:53,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:53,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:53,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:53,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:53,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:53,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:53,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:53,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:53,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:53,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:53,766 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:22:54,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:54,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:54,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:54,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:54,251 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:54,252 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd03.c [2020-09-24 20:22:54,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c392fe07a/695e9e395bb5496fbdb305a9f6878c2a/FLAG529ea2217 [2020-09-24 20:22:54,885 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:54,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd03.c [2020-09-24 20:22:54,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c392fe07a/695e9e395bb5496fbdb305a9f6878c2a/FLAG529ea2217 [2020-09-24 20:22:55,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c392fe07a/695e9e395bb5496fbdb305a9f6878c2a [2020-09-24 20:22:55,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:55,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:55,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:55,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:55,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:55,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6474c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55, skipping insertion in model container [2020-09-24 20:22:55,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:55,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:22:55,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:55,524 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:22:55,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:55,562 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:22:55,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55 WrapperNode [2020-09-24 20:22:55,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:55,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:22:55,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:22:55,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:22:55,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:22:55,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:22:55,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:22:55,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:22:55,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (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 [2020-09-24 20:22:55,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:22:55,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:22:55,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-24 20:22:55,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-24 20:22:55,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:22:55,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:22:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:22:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-24 20:22:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-24 20:22:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:22:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:22:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:22:56,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:22:56,043 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:22:56,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:56 BoogieIcfgContainer [2020-09-24 20:22:56,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:22:56,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:22:56,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:22:56,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:22:56,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:55" (1/3) ... [2020-09-24 20:22:56,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1b35e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:56, skipping insertion in model container [2020-09-24 20:22:56,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (2/3) ... [2020-09-24 20:22:56,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1b35e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:56, skipping insertion in model container [2020-09-24 20:22:56,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:56" (3/3) ... [2020-09-24 20:22:56,061 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2020-09-24 20:22:56,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:22:56,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:22:56,110 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:22:56,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:22:56,152 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:22:56,152 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:22:56,152 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:22:56,152 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:22:56,152 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:22:56,153 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:22:56,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:22:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 20:22:56,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 20:22:56,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:56,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:56,203 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:56,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:56,210 INFO L82 PathProgramCache]: Analyzing trace with hash -382036863, now seen corresponding path program 1 times [2020-09-24 20:22:56,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:56,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393430379] [2020-09-24 20:22:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:22:56,368 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:22:56,369 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:22:56,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:22:56,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:22:56 BoogieIcfgContainer [2020-09-24 20:22:56,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:22:56,401 INFO L168 Benchmark]: Toolchain (without parser) took 1156.06 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 154.4 MB in the end (delta: -52.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:56,402 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:22:56,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.28 ms. Allocated memory is still 140.0 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:56,404 INFO L168 Benchmark]: Boogie Preprocessor took 104.04 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 181.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:56,405 INFO L168 Benchmark]: RCFGBuilder took 381.32 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 166.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:56,406 INFO L168 Benchmark]: TraceAbstraction took 345.64 ms. Allocated memory is still 202.4 MB. Free memory was 166.2 MB in the beginning and 154.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:22:56,410 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.28 ms. Allocated memory is still 140.0 MB. Free memory was 101.0 MB in the beginning and 91.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.04 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 181.1 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.32 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 166.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 345.64 ms. Allocated memory is still 202.4 MB. Free memory was 166.2 MB in the beginning and 154.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 47]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L38] int n = __VERIFIER_nondet_int(); [L39] COND FALSE !(n < 0) [L42] CALL, EXPR isEven(n) [L27] COND TRUE n == 0 [L28] return 1; [L42] RET, EXPR isEven(n) [L42] int result = isEven(n); [L43] int mod = n % 2; [L44] COND FALSE !(result < 0 || result == mod) [L47] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=44occurred 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, 20 NumberOfCodeBlocks, 20 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 proved your program to be incorrect! Received shutdown request...