/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:37:56,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:37:56,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:37:56,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:37:56,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:37:56,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:37:56,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:37:56,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:37:56,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:37:56,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:37:56,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:37:56,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:37:56,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:37:56,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:37:56,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:37:56,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:37:56,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:37:56,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:37:56,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:37:56,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:37:56,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:37:56,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:37:56,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:37:56,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:37:56,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 21:37:56,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:37:56,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:37:56,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:37:56,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:37:56,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:37:56,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:37:56,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:37:56,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:37:56,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:37:56,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:37:56,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:37:56,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:37:56,482 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:37:56,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:37:56,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:37:56,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:37:56,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:37:56,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:37:56,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:37:56,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:37:56,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:37:56,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:37:56,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:37:56,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:37:56,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:37:56,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:37:56,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:37:56,488 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:37:56,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:37:56,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:37:56,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:37:56,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:37:56,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:37:56,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:37:56,490 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 21:37:56,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:37:56,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:37:57,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:37:57,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:37:57,006 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:37:57,007 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd03.c [2020-09-04 21:37:57,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34cc3a633/e98dd0bb145849e989864ebbbbaefdfc/FLAG4b5eb9ed3 [2020-09-04 21:37:57,599 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:37:57,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd03.c [2020-09-04 21:37:57,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34cc3a633/e98dd0bb145849e989864ebbbbaefdfc/FLAG4b5eb9ed3 [2020-09-04 21:37:57,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34cc3a633/e98dd0bb145849e989864ebbbbaefdfc [2020-09-04 21:37:57,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:37:57,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:37:57,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:57,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:37:57,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:37:57,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:57, skipping insertion in model container [2020-09-04 21:37:57,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:57" (1/1) ... [2020-09-04 21:37:57,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:37:58,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:37:58,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:58,219 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:37:58,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:58,255 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:37:58,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58 WrapperNode [2020-09-04 21:37:58,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:58,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:37:58,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:37:58,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:37:58,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (1/1) ... [2020-09-04 21:37:58,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (1/1) ... [2020-09-04 21:37:58,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (1/1) ... [2020-09-04 21:37:58,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (1/1) ... [2020-09-04 21:37:58,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (1/1) ... [2020-09-04 21:37:58,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (1/1) ... [2020-09-04 21:37:58,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (1/1) ... [2020-09-04 21:37:58,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:37:58,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:37:58,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:37:58,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:37:58,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (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 [2020-09-04 21:37:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:37:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:37:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-04 21:37:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-04 21:37:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:37:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:37:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 21:37:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-04 21:37:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-04 21:37:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:37:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:37:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:37:58,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:37:58,681 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 21:37:58,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:58 BoogieIcfgContainer [2020-09-04 21:37:58,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:37:58,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:37:58,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:37:58,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:37:58,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:37:57" (1/3) ... [2020-09-04 21:37:58,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a01e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:58, skipping insertion in model container [2020-09-04 21:37:58,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:58" (2/3) ... [2020-09-04 21:37:58,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a01e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:58, skipping insertion in model container [2020-09-04 21:37:58,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:58" (3/3) ... [2020-09-04 21:37:58,696 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2020-09-04 21:37:58,708 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:37:58,718 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:37:58,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:37:58,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:37:58,780 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:37:58,780 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:37:58,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:37:58,781 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:37:58,781 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:37:58,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:37:58,781 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:37:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-04 21:37:58,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 21:37:58,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:58,829 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] [2020-09-04 21:37:58,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:58,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:58,839 INFO L82 PathProgramCache]: Analyzing trace with hash -382036863, now seen corresponding path program 1 times [2020-09-04 21:37:58,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:58,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063808053] [2020-09-04 21:37:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:58,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:59,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:59,027 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:37:59,028 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:37:59,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:37:59,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:37:59 BoogieIcfgContainer [2020-09-04 21:37:59,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:37:59,065 INFO L168 Benchmark]: Toolchain (without parser) took 1100.23 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 153.0 MB in the end (delta: -49.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:59,066 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:37:59,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.41 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 93.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:59,068 INFO L168 Benchmark]: Boogie Preprocessor took 103.94 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 182.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:59,069 INFO L168 Benchmark]: RCFGBuilder took 325.53 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 166.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:59,070 INFO L168 Benchmark]: TraceAbstraction took 373.98 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 153.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:59,074 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.41 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 93.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.94 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 182.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.53 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 166.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 373.98 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 153.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 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(); VAL [__VERIFIER_nondet_int()=0, n=0] [L39] COND FALSE !(n < 0) VAL [n=0] [L42] CALL, EXPR isEven(n) VAL [\old(n)=0] [L27] COND TRUE n == 0 VAL [\old(n)=0, n=0] [L28] return 1; VAL [\old(n)=0, \result=1, n=0] [L42] RET, EXPR isEven(n) VAL [isEven(n)=1, n=0] [L42] int result = isEven(n); VAL [isEven(n)=1, n=0, result=1] [L43] int mod = n % 2; VAL [mod=0, n=0, result=1] [L44] COND FALSE !(result < 0 || result == mod) VAL [mod=0, n=0, result=1] [L47] __VERIFIER_error() VAL [mod=0, n=0, result=1] - 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...