/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/BallRajamani-SPIN2000-Fig1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 15:54:51,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 15:54:52,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 15:54:52,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 15:54:52,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 15:54:52,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 15:54:52,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 15:54:52,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 15:54:52,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 15:54:52,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 15:54:52,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 15:54:52,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 15:54:52,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 15:54:52,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 15:54:52,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 15:54:52,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 15:54:52,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 15:54:52,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 15:54:52,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 15:54:52,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 15:54:52,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 15:54:52,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 15:54:52,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 15:54:52,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 15:54:52,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-08 15:54:52,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-08 15:54:52,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-08 15:54:52,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-08 15:54:52,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-08 15:54:52,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-08 15:54:52,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 15:54:52,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 15:54:52,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 15:54:52,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 15:54:52,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 15:54:52,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 15:54:52,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 15:54:52,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 15:54:52,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 15:54:52,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 15:54:52,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 15:54:52,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 15:54:52,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 15:54:52,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 15:54:52,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 15:54:52,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 15:54:52,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 15:54:52,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 15:54:52,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 15:54:52,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 15:54:52,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 15:54:52,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 15:54:52,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 15:54:52,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 15:54:52,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 15:54:52,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 15:54:52,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 15:54:52,062 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 15:54:52,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 15:54:52,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 15:54:52,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 15:54:52,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 15:54:52,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 15:54:52,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 15:54:52,064 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 15:54:52,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 15:54:52,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 15:54:52,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 15:54:52,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 15:54:52,356 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 15:54:52,357 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2020-07-08 15:54:52,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea90c27be/5b2026fe66e147fcb59de37d2cf323f7/FLAG747fd0f96 [2020-07-08 15:54:52,838 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 15:54:52,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2020-07-08 15:54:52,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea90c27be/5b2026fe66e147fcb59de37d2cf323f7/FLAG747fd0f96 [2020-07-08 15:54:53,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea90c27be/5b2026fe66e147fcb59de37d2cf323f7 [2020-07-08 15:54:53,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 15:54:53,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 15:54:53,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 15:54:53,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 15:54:53,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 15:54:53,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@889ffd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53, skipping insertion in model container [2020-07-08 15:54:53,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 15:54:53,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 15:54:53,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 15:54:53,476 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 15:54:53,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 15:54:53,506 INFO L208 MainTranslator]: Completed translation [2020-07-08 15:54:53,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53 WrapperNode [2020-07-08 15:54:53,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 15:54:53,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 15:54:53,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 15:54:53,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 15:54:53,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (1/1) ... [2020-07-08 15:54:53,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 15:54:53,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 15:54:53,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 15:54:53,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 15:54:53,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (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 [2020-07-08 15:54:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 15:54:53,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 15:54:53,679 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2020-07-08 15:54:53,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 15:54:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 15:54:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 15:54:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure A [2020-07-08 15:54:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 15:54:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 15:54:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 15:54:53,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 15:54:53,946 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-08 15:54:53,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 03:54:53 BoogieIcfgContainer [2020-07-08 15:54:53,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 15:54:53,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 15:54:53,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 15:54:53,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 15:54:53,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 03:54:53" (1/3) ... [2020-07-08 15:54:53,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b10ec20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 03:54:53, skipping insertion in model container [2020-07-08 15:54:53,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 03:54:53" (2/3) ... [2020-07-08 15:54:53,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b10ec20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 03:54:53, skipping insertion in model container [2020-07-08 15:54:53,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 03:54:53" (3/3) ... [2020-07-08 15:54:53,959 INFO L109 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1.c [2020-07-08 15:54:53,970 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 15:54:53,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 15:54:53,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 15:54:54,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 15:54:54,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 15:54:54,022 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 15:54:54,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 15:54:54,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 15:54:54,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 15:54:54,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 15:54:54,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 15:54:54,042 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-08 15:54:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-08 15:54:54,062 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 15:54:54,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 15:54:54,064 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 15:54:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 15:54:54,072 INFO L82 PathProgramCache]: Analyzing trace with hash 31169137, now seen corresponding path program 1 times [2020-07-08 15:54:54,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 15:54:54,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598567698] [2020-07-08 15:54:54,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 15:54:54,156 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.(FastUPRCore.java:133) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.fastUprAcceleration(Accelerator.java:101) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.accelerateLoop(Accelerator.java:82) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:219) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-08 15:54:54,163 INFO L168 Benchmark]: Toolchain (without parser) took 898.31 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 149.8 MB in the end (delta: -50.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 7.1 GB. [2020-07-08 15:54:54,164 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 117.5 MB in the beginning and 117.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 15:54:54,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.97 ms. Allocated memory is still 142.1 MB. Free memory was 99.3 MB in the beginning and 89.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-08 15:54:54,167 INFO L168 Benchmark]: Boogie Preprocessor took 25.59 ms. Allocated memory is still 142.1 MB. Free memory was 89.7 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-08 15:54:54,168 INFO L168 Benchmark]: RCFGBuilder took 416.88 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 88.1 MB in the beginning and 161.3 MB in the end (delta: -73.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-08 15:54:54,169 INFO L168 Benchmark]: TraceAbstraction took 208.10 ms. Allocated memory is still 199.2 MB. Free memory was 161.3 MB in the beginning and 149.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-07-08 15:54:54,174 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 117.5 MB in the beginning and 117.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.97 ms. Allocated memory is still 142.1 MB. Free memory was 99.3 MB in the beginning and 89.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.59 ms. Allocated memory is still 142.1 MB. Free memory was 89.7 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.88 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 88.1 MB in the beginning and 161.3 MB in the end (delta: -73.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208.10 ms. Allocated memory is still 199.2 MB. Free memory was 161.3 MB in the beginning and 149.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...