/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/recursive/EvenOdd03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:13:15,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:13:15,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:13:15,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:13:15,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:13:15,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:13:15,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:13:15,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:13:15,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:13:15,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:13:15,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:13:15,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:13:15,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:13:15,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:13:15,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:13:15,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:13:15,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:13:15,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:13:15,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:13:15,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:13:15,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:13:15,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:13:15,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:13:15,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:13:16,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:13:16,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:13:16,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:13:16,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:13:16,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:13:16,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:13:16,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:13:16,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:13:16,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:13:16,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:13:16,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:13:16,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:13:16,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:13:16,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:13:16,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:13:16,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:13:16,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:13:16,021 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 [2020-10-28 17:13:16,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:13:16,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:13:16,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:13:16,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:13:16,058 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:13:16,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:13:16,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:13:16,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:13:16,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:13:16,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:13:16,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:13:16,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:13:16,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:13:16,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:13:16,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:13:16,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:13:16,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:13:16,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:13:16,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:13:16,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:13:16,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:13:16,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:13:16,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:13:16,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:13:16,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:13:16,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:13:16,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:13:16,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:13:16,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:13:16,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:13:16,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:13:16,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:13:16,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:13:16,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:13:16,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:13:16,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd03.c [2020-10-28 17:13:16,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f5038cec/89c7cba0525d45a48db9a9db506f8fbb/FLAG92faefe57 [2020-10-28 17:13:17,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:13:17,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd03.c [2020-10-28 17:13:17,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f5038cec/89c7cba0525d45a48db9a9db506f8fbb/FLAG92faefe57 [2020-10-28 17:13:17,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f5038cec/89c7cba0525d45a48db9a9db506f8fbb [2020-10-28 17:13:17,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:13:17,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:13:17,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:13:17,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:13:17,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:13:17,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bcc7904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17, skipping insertion in model container [2020-10-28 17:13:17,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:13:17,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:13:17,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:13:17,789 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:13:17,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:13:17,820 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:13:17,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17 WrapperNode [2020-10-28 17:13:17,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:13:17,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:13:17,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:13:17,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:13:17,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (1/1) ... [2020-10-28 17:13:17,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:13:17,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:13:17,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:13:17,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:13:17,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (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 [2020-10-28 17:13:17,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:13:17,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:13:17,931 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:13:17,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-10-28 17:13:17,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-10-28 17:13:17,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:13:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:13:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:13:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:13:17,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:13:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:13:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-10-28 17:13:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-10-28 17:13:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:13:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:13:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:13:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:13:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:13:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:13:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:13:18,211 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:13:18,211 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:13:18,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:13:18 BoogieIcfgContainer [2020-10-28 17:13:18,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:13:18,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:13:18,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:13:18,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:13:18,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:13:17" (1/3) ... [2020-10-28 17:13:18,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d066ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:13:18, skipping insertion in model container [2020-10-28 17:13:18,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:13:17" (2/3) ... [2020-10-28 17:13:18,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d066ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:13:18, skipping insertion in model container [2020-10-28 17:13:18,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:13:18" (3/3) ... [2020-10-28 17:13:18,226 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2020-10-28 17:13:18,239 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:13:18,244 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:13:18,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:13:18,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:13:18,294 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:13:18,295 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:13:18,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:13:18,295 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:13:18,295 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:13:18,295 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:13:18,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:13:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-28 17:13:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 17:13:18,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:13:18,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:13:18,327 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:13:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:13:18,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1467223245, now seen corresponding path program 1 times [2020-10-28 17:13:18,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:13:18,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742727160] [2020-10-28 17:13:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:13:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 17:13:18,570 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 17:13:18,571 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 17:13:18,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:13:18,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:13:18 BoogieIcfgContainer [2020-10-28 17:13:18,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:13:18,594 INFO L168 Benchmark]: Toolchain (without parser) took 1014.11 ms. Allocated memory is still 163.6 MB. Free memory was 138.6 MB in the beginning and 138.8 MB in the end (delta: -268.8 kB). Peak memory consumption was 895.6 kB. Max. memory is 8.0 GB. [2020-10-28 17:13:18,595 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 163.6 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:13:18,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.31 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 128.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:18,597 INFO L168 Benchmark]: Boogie Preprocessor took 29.28 ms. Allocated memory is still 163.6 MB. Free memory was 128.6 MB in the beginning and 127.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:18,598 INFO L168 Benchmark]: RCFGBuilder took 361.71 ms. Allocated memory is still 163.6 MB. Free memory was 127.2 MB in the beginning and 113.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:13:18,599 INFO L168 Benchmark]: TraceAbstraction took 376.99 ms. Allocated memory is still 163.6 MB. Free memory was 112.7 MB in the beginning and 138.8 MB in the end (delta: -26.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:13:18,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 163.6 MB. Free memory is still 134.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 232.31 ms. Allocated memory is still 163.6 MB. Free memory was 138.0 MB in the beginning and 128.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.28 ms. Allocated memory is still 163.6 MB. Free memory was 128.6 MB in the beginning and 127.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 361.71 ms. Allocated memory is still 163.6 MB. Free memory was 127.2 MB in the beginning and 113.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 376.99 ms. Allocated memory is still 163.6 MB. Free memory was 112.7 MB in the beginning and 138.8 MB in the end (delta: -26.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int n = __VERIFIER_nondet_int(); [L41] COND FALSE !(n < 0) [L44] CALL, EXPR isEven(n) [L29] COND TRUE n == 0 [L30] return 1; [L44] RET, EXPR isEven(n) [L44] int result = isEven(n); [L45] int mod = n % 2; [L46] COND FALSE !(result < 0 || result == mod) [L49] CALL reach_error() [L3] __assert_fail("0", "EvenOdd03.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 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=34occurred 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, 16 NumberOfCodeBlocks, 16 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...