./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/EvenOdd03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37ac3151caa4af47a1f06dea7853d99d19358e76 ......................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:45:33,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:45:33,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:45:33,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:45:33,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:45:33,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:45:33,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:45:33,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:45:33,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:45:33,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:45:33,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:45:33,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:45:33,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:45:33,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:45:33,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:45:33,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:45:33,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:45:33,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:45:33,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:45:33,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:45:33,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:45:33,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:45:33,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:45:33,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:45:33,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:45:33,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:45:33,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:45:33,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:45:33,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:45:33,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:45:33,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:45:33,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:45:33,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:45:33,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:45:33,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:45:33,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:45:33,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:45:33,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:45:33,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:45:33,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:45:33,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:45:33,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:45:33,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:45:33,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:45:33,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:45:33,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:45:33,950 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:45:33,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:45:33,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:45:33,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:45:33,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:45:33,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:45:33,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:45:33,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:45:33,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:45:33,954 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:45:33,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:45:33,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:45:33,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:45:33,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:45:33,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:45:33,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:45:33,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:45:33,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:45:33,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:45:33,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:45:33,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:45:33,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:45:33,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:45:33,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:45:33,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:45:33,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37ac3151caa4af47a1f06dea7853d99d19358e76 [2020-10-20 01:45:34,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:45:34,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:45:34,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:45:34,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:45:34,195 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:45:34,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd03.c [2020-10-20 01:45:34,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042a5623e/396538ff061b451c8fe869ec3c9b5d08/FLAG06f7c627c [2020-10-20 01:45:34,695 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:45:34,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd03.c [2020-10-20 01:45:34,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042a5623e/396538ff061b451c8fe869ec3c9b5d08/FLAG06f7c627c [2020-10-20 01:45:35,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/042a5623e/396538ff061b451c8fe869ec3c9b5d08 [2020-10-20 01:45:35,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:45:35,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:45:35,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:45:35,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:45:35,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:45:35,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a074f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35, skipping insertion in model container [2020-10-20 01:45:35,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:45:35,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:45:35,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:45:35,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:45:35,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:45:35,365 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:45:35,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35 WrapperNode [2020-10-20 01:45:35,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:45:35,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:45:35,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:45:35,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:45:35,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:45:35,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:45:35,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:45:35,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:45:35,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... [2020-10-20 01:45:35,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:45:35,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:45:35,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:45:35,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:45:35,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-20 01:45:35,482 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-10-20 01:45:35,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-10-20 01:45:35,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:45:35,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:45:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-10-20 01:45:35,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-10-20 01:45:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:45:35,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:45:35,751 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:45:35,751 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 01:45:35,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:45:35 BoogieIcfgContainer [2020-10-20 01:45:35,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:45:35,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:45:35,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:45:35,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:45:35,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:45:35" (1/3) ... [2020-10-20 01:45:35,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677b9c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:45:35, skipping insertion in model container [2020-10-20 01:45:35,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:45:35" (2/3) ... [2020-10-20 01:45:35,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677b9c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:45:35, skipping insertion in model container [2020-10-20 01:45:35,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:45:35" (3/3) ... [2020-10-20 01:45:35,763 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2020-10-20 01:45:35,775 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:45:35,783 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:45:35,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:45:35,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:45:35,846 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:45:35,846 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:45:35,847 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:45:35,847 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:45:35,847 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:45:35,847 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:45:35,847 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:45:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-20 01:45:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 01:45:35,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:45:35,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:45:35,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:45:35,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:45:35,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2022635136, now seen corresponding path program 1 times [2020-10-20 01:45:35,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:45:35,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475694756] [2020-10-20 01:45:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:45:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:45:36,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:45:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:45:36,049 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:45:36,075 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:45:36,076 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:45:36,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:45:36,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:45:36 BoogieIcfgContainer [2020-10-20 01:45:36,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:45:36,107 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:45:36,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:45:36,107 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:45:36,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:45:35" (3/4) ... [2020-10-20 01:45:36,110 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:45:36,163 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:45:36,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:45:36,166 INFO L168 Benchmark]: Toolchain (without parser) took 1130.68 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 16.7 MB in the beginning and 18.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:36,167 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 33.6 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 01:45:36,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.53 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 15.8 MB in the beginning and 24.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:36,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.58 ms. Allocated memory is still 43.0 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:36,170 INFO L168 Benchmark]: Boogie Preprocessor took 19.50 ms. Allocated memory is still 43.0 MB. Free memory was 23.3 MB in the beginning and 22.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:36,171 INFO L168 Benchmark]: RCFGBuilder took 331.83 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 22.0 MB in the beginning and 20.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:36,172 INFO L168 Benchmark]: TraceAbstraction took 351.59 ms. Allocated memory is still 45.1 MB. Free memory was 19.8 MB in the beginning and 20.5 MB in the end (delta: -676.9 kB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 01:45:36,173 INFO L168 Benchmark]: Witness Printer took 56.66 ms. Allocated memory is still 45.1 MB. Free memory was 20.5 MB in the beginning and 18.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:45:36,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 33.6 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 325.53 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 15.8 MB in the beginning and 24.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 34.58 ms. Allocated memory is still 43.0 MB. Free memory was 24.9 MB in the beginning and 23.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.50 ms. Allocated memory is still 43.0 MB. Free memory was 23.3 MB in the beginning and 22.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 331.83 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 22.0 MB in the beginning and 20.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 351.59 ms. Allocated memory is still 45.1 MB. Free memory was 19.8 MB in the beginning and 20.5 MB in the end (delta: -676.9 kB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 56.66 ms. Allocated memory is still 45.1 MB. Free memory was 20.5 MB in the beginning and 18.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 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) VAL [\old(n)=0] [L29] COND TRUE n == 0 [L30] return 1; VAL [\old(n)=0, \result=1, n=0] [L44] RET, EXPR isEven(n) [L44] int result = isEven(n); [L45] int mod = n % 2; [L46] COND FALSE !(result < 0 || result == mod) [L3] __assert_fail("0", "EvenOdd03.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 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=26occurred 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 proved your program to be incorrect! Received shutdown request...