/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/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 18:36:14,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 18:36:14,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 18:36:14,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 18:36:14,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 18:36:14,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 18:36:14,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 18:36:14,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 18:36:14,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 18:36:14,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 18:36:14,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 18:36:14,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 18:36:14,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 18:36:14,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 18:36:14,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 18:36:14,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 18:36:14,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 18:36:14,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 18:36:14,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 18:36:14,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 18:36:14,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 18:36:14,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 18:36:14,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 18:36:14,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 18:36:14,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-10 18:36:14,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-10 18:36:14,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-10 18:36:14,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-10 18:36:14,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-10 18:36:14,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-10 18:36:14,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 18:36:14,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 18:36:14,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 18:36:14,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 18:36:14,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 18:36:14,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 18:36:14,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 18:36:14,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 18:36:14,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 18:36:14,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 18:36:14,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 18:36:14,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 18:36:14,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 18:36:14,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 18:36:14,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 18:36:14,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 18:36:14,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 18:36:14,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 18:36:14,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 18:36:14,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 18:36:14,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 18:36:14,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 18:36:14,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 18:36:14,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 18:36:14,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 18:36:14,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 18:36:14,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 18:36:14,348 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 18:36:14,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 18:36:14,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 18:36:14,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 18:36:14,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 18:36:14,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 18:36:14,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 18:36:14,350 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 18:36:14,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 18:36:14,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 18:36:14,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 18:36:14,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 18:36:14,640 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 18:36:14,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-10 18:36:14,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656c09b90/5e474b67f450436d82561e931b3769e2/FLAG1c9438204 [2020-07-10 18:36:15,158 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 18:36:15,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-10 18:36:15,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656c09b90/5e474b67f450436d82561e931b3769e2/FLAG1c9438204 [2020-07-10 18:36:15,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656c09b90/5e474b67f450436d82561e931b3769e2 [2020-07-10 18:36:15,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 18:36:15,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 18:36:15,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 18:36:15,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 18:36:15,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 18:36:15,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226e00a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15, skipping insertion in model container [2020-07-10 18:36:15,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 18:36:15,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 18:36:15,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 18:36:15,816 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 18:36:15,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 18:36:15,852 INFO L208 MainTranslator]: Completed translation [2020-07-10 18:36:15,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15 WrapperNode [2020-07-10 18:36:15,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 18:36:15,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 18:36:15,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 18:36:15,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 18:36:15,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (1/1) ... [2020-07-10 18:36:15,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 18:36:15,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 18:36:15,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 18:36:15,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 18:36:15,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (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 [2020-07-10 18:36:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 18:36:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 18:36:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-07-10 18:36:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 18:36:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 18:36:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 18:36:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-07-10 18:36:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 18:36:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 18:36:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 18:36:16,439 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 18:36:16,439 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 18:36:16,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:36:16 BoogieIcfgContainer [2020-07-10 18:36:16,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 18:36:16,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 18:36:16,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 18:36:16,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 18:36:16,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 06:36:15" (1/3) ... [2020-07-10 18:36:16,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46946bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:36:16, skipping insertion in model container [2020-07-10 18:36:16,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 06:36:15" (2/3) ... [2020-07-10 18:36:16,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46946bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:36:16, skipping insertion in model container [2020-07-10 18:36:16,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:36:16" (3/3) ... [2020-07-10 18:36:16,453 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-07-10 18:36:16,464 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 18:36:16,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 18:36:16,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 18:36:16,511 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 18:36:16,511 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 18:36:16,511 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 18:36:16,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 18:36:16,512 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 18:36:16,512 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 18:36:16,512 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 18:36:16,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 18:36:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-10 18:36:16,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-10 18:36:16,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 18:36:16,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 18:36:16,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 18:36:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 18:36:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-07-10 18:36:16,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 18:36:16,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486649877] [2020-07-10 18:36:16,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 18:36:16,651 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-10 18:36:16,658 INFO L168 Benchmark]: Toolchain (without parser) took 1107.37 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 146.1 MB in the end (delta: -44.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-10 18:36:16,659 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 18:36:16,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.73 ms. Allocated memory is still 137.4 MB. Free memory was 101.4 MB in the beginning and 91.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-10 18:36:16,661 INFO L168 Benchmark]: Boogie Preprocessor took 31.05 ms. Allocated memory is still 137.4 MB. Free memory was 91.5 MB in the beginning and 90.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-10 18:36:16,662 INFO L168 Benchmark]: RCFGBuilder took 559.31 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.1 MB in the beginning and 159.0 MB in the end (delta: -68.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-10 18:36:16,663 INFO L168 Benchmark]: TraceAbstraction took 208.67 ms. Allocated memory is still 201.9 MB. Free memory was 158.3 MB in the beginning and 146.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-07-10 18:36:16,667 INFO L336 ainManager$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 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.73 ms. Allocated memory is still 137.4 MB. Free memory was 101.4 MB in the beginning and 91.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.05 ms. Allocated memory is still 137.4 MB. Free memory was 91.5 MB in the beginning and 90.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.31 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.1 MB in the beginning and 159.0 MB in the end (delta: -68.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208.67 ms. Allocated memory is still 201.9 MB. Free memory was 158.3 MB in the beginning and 146.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 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...