/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:39:04,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:39:04,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:39:04,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:39:04,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:39:04,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:39:04,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:39:04,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:39:04,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:39:04,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:39:04,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:39:04,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:39:04,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:39:04,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:39:04,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:39:04,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:39:04,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:39:04,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:39:04,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:39:04,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:39:04,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:39:04,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:39:04,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:39:04,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:39:04,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:39:04,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:39:04,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:39:04,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:39:04,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:39:04,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:39:04,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:39:04,243 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:39:04,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:39:04,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:39:04,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:39:04,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:39:04,244 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:39:04,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:39:04,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:39:04,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:39:04,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:39:04,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:39:04,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:39:04,247 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:39:04,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:39:04,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:39:04,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:39:04,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:39:04,653 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:39:04,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd03.c [2021-02-23 17:39:04,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b88d1a8c1/6d228384b681433dae186a8ce1932768/FLAG561e36ea4 [2021-02-23 17:39:05,315 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:39:05,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd03.c [2021-02-23 17:39:05,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b88d1a8c1/6d228384b681433dae186a8ce1932768/FLAG561e36ea4 [2021-02-23 17:39:05,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b88d1a8c1/6d228384b681433dae186a8ce1932768 [2021-02-23 17:39:05,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:39:05,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:39:05,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:39:05,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:39:05,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:39:05,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:39:05" (1/1) ... [2021-02-23 17:39:05,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f0633c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:05, skipping insertion in model container [2021-02-23 17:39:05,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:39:05" (1/1) ... [2021-02-23 17:39:05,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:39:05,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:39:05,961 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd03.c[974,987] [2021-02-23 17:39:05,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:39:05,977 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:39:05,998 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd03.c[974,987] [2021-02-23 17:39:05,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:39:06,015 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:39:06,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06 WrapperNode [2021-02-23 17:39:06,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:39:06,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:39:06,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:39:06,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:39:06,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:39:06,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:39:06,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:39:06,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:39:06,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (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 [2021-02-23 17:39:06,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:39:06,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:39:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:39:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2021-02-23 17:39:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2021-02-23 17:39:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:39:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:39:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:39:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:39:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:39:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:39:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2021-02-23 17:39:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2021-02-23 17:39:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:39:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:39:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:39:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:39:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:39:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:39:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:39:06,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:39:06,648 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:39:06,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:39:06 BoogieIcfgContainer [2021-02-23 17:39:06,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:39:06,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:39:06,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:39:06,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:39:06,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:39:05" (1/3) ... [2021-02-23 17:39:06,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d55a07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:39:06, skipping insertion in model container [2021-02-23 17:39:06,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (2/3) ... [2021-02-23 17:39:06,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d55a07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:39:06, skipping insertion in model container [2021-02-23 17:39:06,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:39:06" (3/3) ... [2021-02-23 17:39:06,677 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd03.c [2021-02-23 17:39:06,691 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:39:06,699 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:39:06,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:39:06,763 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:39:06,763 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:39:06,763 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:39:06,763 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:39:06,763 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:39:06,763 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:39:06,764 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:39:06,764 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:39:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2021-02-23 17:39:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 17:39:06,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:06,805 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:39:06,805 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1595679359, now seen corresponding path program 1 times [2021-02-23 17:39:06,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:06,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56238827] [2021-02-23 17:39:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:06,921 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:39:07,036 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:39:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:39:07,111 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:39:07,164 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:39:07,164 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:39:07,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:39:07,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:39:07 BoogieIcfgContainer [2021-02-23 17:39:07,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:39:07,191 INFO L168 Benchmark]: Toolchain (without parser) took 1488.50 ms. Allocated memory is still 151.0 MB. Free memory was 128.1 MB in the beginning and 116.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:07,194 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:39:07,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.65 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:07,200 INFO L168 Benchmark]: Boogie Preprocessor took 35.53 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:07,202 INFO L168 Benchmark]: RCFGBuilder took 599.28 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 131.3 MB in the end (delta: -15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:07,203 INFO L168 Benchmark]: TraceAbstraction took 532.80 ms. Allocated memory is still 151.0 MB. Free memory was 130.8 MB in the beginning and 116.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:07,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 298.65 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.53 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 599.28 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 131.3 MB in the end (delta: -15.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 532.80 ms. Allocated memory is still 151.0 MB. Free memory was 130.8 MB in the beginning and 116.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 49]: a call to reach_error is reachable a call to reach_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] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=53occurred 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: No data available, 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...