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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-tiling/mbpr3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:38:47,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:38:47,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:38:47,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:38:47,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:38:47,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:38:47,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:38:47,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:38:47,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:38:47,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:38:47,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:38:47,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:38:47,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:38:47,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:38:47,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:38:47,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:38:47,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:38:47,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:38:47,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:38:47,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:38:47,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:38:47,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:38:47,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:38:47,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:38:47,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:38:47,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:38:47,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:38:47,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:38:47,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:38:47,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:38:47,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:38:47,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:38:47,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:38:47,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:38:47,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:38:47,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:38:47,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:38:47,984 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:38:47,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:38:47,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:38:47,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:38:47,988 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:38:47,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:38:47,988 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:38:47,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:38:47,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:38:47,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:38:47,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:38:47,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:38:47,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:38:47,990 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:38:47,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:38:47,991 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:38:47,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:38:47,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:38:47,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:38:47,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:38:47,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:38:47,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:38:47,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:38:47,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:38:47,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:38:47,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:38:47,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:38:47,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:38:47,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:38:48,258 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:38:48,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:38:48,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:38:48,280 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:38:48,280 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:38:48,281 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr3.c [2019-10-13 21:38:48,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5661bed95/d5594b58f3844437a62c1c199a917e30/FLAG8aef7299b [2019-10-13 21:38:48,875 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:38:48,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr3.c [2019-10-13 21:38:48,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5661bed95/d5594b58f3844437a62c1c199a917e30/FLAG8aef7299b [2019-10-13 21:38:49,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5661bed95/d5594b58f3844437a62c1c199a917e30 [2019-10-13 21:38:49,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:38:49,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:38:49,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:49,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:38:49,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:38:49,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43cf2eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49, skipping insertion in model container [2019-10-13 21:38:49,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,245 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:38:49,269 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:38:49,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:49,487 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:38:49,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:38:49,632 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:38:49,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49 WrapperNode [2019-10-13 21:38:49,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:38:49,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:38:49,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:38:49,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:38:49,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (1/1) ... [2019-10-13 21:38:49,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:38:49,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:38:49,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:38:49,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:38:49,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (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 [2019-10-13 21:38:49,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:38:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:38:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:38:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:38:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:38:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:38:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:38:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:38:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:38:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:38:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:38:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:38:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:38:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:38:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:38:50,345 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:38:50,346 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:38:50,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:50 BoogieIcfgContainer [2019-10-13 21:38:50,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:38:50,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:38:50,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:38:50,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:38:50,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:38:49" (1/3) ... [2019-10-13 21:38:50,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef2df77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:50, skipping insertion in model container [2019-10-13 21:38:50,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:38:49" (2/3) ... [2019-10-13 21:38:50,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef2df77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:38:50, skipping insertion in model container [2019-10-13 21:38:50,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:38:50" (3/3) ... [2019-10-13 21:38:50,357 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2019-10-13 21:38:50,368 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:38:50,378 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:38:50,392 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:38:50,420 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:38:50,420 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:38:50,421 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:38:50,421 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:38:50,421 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:38:50,422 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:38:50,422 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:38:50,422 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:38:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 21:38:50,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:38:50,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:50,452 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:50,455 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:50,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1766250558, now seen corresponding path program 1 times [2019-10-13 21:38:50,470 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:50,471 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833373421] [2019-10-13 21:38:50,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:50,472 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:50,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:38:50,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833373421] [2019-10-13 21:38:50,959 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:50,960 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:38:50,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985155214] [2019-10-13 21:38:50,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:38:50,967 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:50,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:38:50,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:38:50,986 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-10-13 21:38:51,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:51,117 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-10-13 21:38:51,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:38:51,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-13 21:38:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:51,130 INFO L225 Difference]: With dead ends: 46 [2019-10-13 21:38:51,131 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 21:38:51,137 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:38:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 21:38:51,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 21:38:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 21:38:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-10-13 21:38:51,194 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2019-10-13 21:38:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:51,195 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-10-13 21:38:51,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:38:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-10-13 21:38:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 21:38:51,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:51,198 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:51,199 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:51,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:51,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1855375174, now seen corresponding path program 1 times [2019-10-13 21:38:51,200 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:51,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928253848] [2019-10-13 21:38:51,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:51,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:51,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:38:51,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928253848] [2019-10-13 21:38:51,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:38:51,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:38:51,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244520437] [2019-10-13 21:38:51,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:38:51,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:38:51,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:38:51,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:38:51,466 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2019-10-13 21:38:51,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:38:51,520 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2019-10-13 21:38:51,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:38:51,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-13 21:38:51,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:38:51,522 INFO L225 Difference]: With dead ends: 32 [2019-10-13 21:38:51,522 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 21:38:51,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:38:51,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 21:38:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 21:38:51,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 21:38:51,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-10-13 21:38:51,530 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 16 [2019-10-13 21:38:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:38:51,530 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-10-13 21:38:51,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:38:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-10-13 21:38:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 21:38:51,531 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:38:51,531 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:38:51,531 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:38:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:38:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1973406544, now seen corresponding path program 1 times [2019-10-13 21:38:51,532 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:38:51,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7063739] [2019-10-13 21:38:51,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:51,533 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:38:51,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:38:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:51,972 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2019-10-13 21:38:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:38:52,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7063739] [2019-10-13 21:38:52,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523965423] [2019-10-13 21:38:52,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:38:52,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-13 21:38:52,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:38:52,422 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:38:52,669 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:38:52,670 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:38:52,681 INFO L168 Benchmark]: Toolchain (without parser) took 3449.71 ms. Allocated memory was 138.9 MB in the beginning and 235.4 MB in the end (delta: 96.5 MB). Free memory was 104.1 MB in the beginning and 100.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 99.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:38:52,683 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:38:52,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.66 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.9 MB in the beginning and 181.5 MB in the end (delta: -77.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:38:52,695 INFO L168 Benchmark]: Boogie Preprocessor took 53.50 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:38:52,697 INFO L168 Benchmark]: RCFGBuilder took 660.29 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 146.4 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:38:52,698 INFO L168 Benchmark]: TraceAbstraction took 2325.33 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 145.8 MB in the beginning and 100.7 MB in the end (delta: 45.1 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:38:52,707 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 405.66 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.9 MB in the beginning and 181.5 MB in the end (delta: -77.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.50 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 660.29 ms. Allocated memory is still 202.9 MB. Free memory was 179.1 MB in the beginning and 146.4 MB in the end (delta: 32.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2325.33 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 145.8 MB in the beginning and 100.7 MB in the end (delta: 45.1 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.NullPointerException de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.NullPointerException: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...