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/skipped.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 00:54:34,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:54:34,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:54:34,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:54:34,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:54:34,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:54:34,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:54:34,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:54:34,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:54:34,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:54:34,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:54:34,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:54:34,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:54:34,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:54:34,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:54:34,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:54:34,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:54:34,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:54:34,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:54:34,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:54:34,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:54:34,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:54:34,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:54:34,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:54:34,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:54:34,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:54:34,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:54:34,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:54:34,366 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 [2019-10-07 00:54:34,400 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:54:34,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:54:34,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:54:34,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:54:34,405 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:54:34,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:54:34,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:54:34,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:54:34,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:54:34,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:54:34,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:54:34,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:54:34,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:54:34,409 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:54:34,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:54:34,409 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:54:34,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:54:34,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:54:34,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:54:34,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:54:34,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:54:34,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:54:34,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:54:34,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:54:34,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:54:34,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:54:34,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:54:34,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:54:34,412 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 [2019-10-07 00:54:34,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:54:34,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:54:34,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:54:34,720 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:54:34,721 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:54:34,721 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skipped.c [2019-10-07 00:54:34,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be691d710/4e53849f758f471ea11913c472bdd524/FLAG5c69861e2 [2019-10-07 00:54:35,247 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:54:35,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skipped.c [2019-10-07 00:54:35,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be691d710/4e53849f758f471ea11913c472bdd524/FLAG5c69861e2 [2019-10-07 00:54:35,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be691d710/4e53849f758f471ea11913c472bdd524 [2019-10-07 00:54:35,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:54:35,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:54:35,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:54:35,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:54:35,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:54:35,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:54:35" (1/1) ... [2019-10-07 00:54:35,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fff5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:35, skipping insertion in model container [2019-10-07 00:54:35,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:54:35" (1/1) ... [2019-10-07 00:54:35,654 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:54:35,679 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:54:35,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:54:35,958 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:54:35,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:54:36,016 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:54:36,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36 WrapperNode [2019-10-07 00:54:36,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:54:36,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:54:36,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:54:36,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:54:36,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (1/1) ... [2019-10-07 00:54:36,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (1/1) ... [2019-10-07 00:54:36,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (1/1) ... [2019-10-07 00:54:36,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (1/1) ... [2019-10-07 00:54:36,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (1/1) ... [2019-10-07 00:54:36,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (1/1) ... [2019-10-07 00:54:36,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (1/1) ... [2019-10-07 00:54:36,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:54:36,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:54:36,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:54:36,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:54:36,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (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 [2019-10-07 00:54:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:54:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:54:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 00:54:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:54:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:54:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 00:54:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 00:54:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:54:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 00:54:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:54:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 00:54:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 00:54:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 00:54:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:54:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:54:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 00:54:36,699 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:54:36,700 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-07 00:54:36,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:54:36 BoogieIcfgContainer [2019-10-07 00:54:36,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:54:36,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:54:36,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:54:36,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:54:36,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:54:35" (1/3) ... [2019-10-07 00:54:36,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27605692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:54:36, skipping insertion in model container [2019-10-07 00:54:36,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:54:36" (2/3) ... [2019-10-07 00:54:36,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27605692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:54:36, skipping insertion in model container [2019-10-07 00:54:36,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:54:36" (3/3) ... [2019-10-07 00:54:36,710 INFO L109 eAbstractionObserver]: Analyzing ICFG skipped.c [2019-10-07 00:54:36,719 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:54:36,727 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:54:36,739 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:54:36,763 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:54:36,764 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:54:36,764 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:54:36,764 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:54:36,765 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:54:36,765 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:54:36,765 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:54:36,766 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:54:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-07 00:54:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 00:54:36,789 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:36,790 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:54:36,792 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1622495605, now seen corresponding path program 1 times [2019-10-07 00:54:36,807 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:36,807 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:36,808 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:36,808 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:54:37,003 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:37,003 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:54:37,004 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 00:54:37,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 00:54:37,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 00:54:37,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:54:37,025 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-07 00:54:37,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:54:37,089 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-07 00:54:37,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 00:54:37,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-07 00:54:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:54:37,099 INFO L225 Difference]: With dead ends: 40 [2019-10-07 00:54:37,100 INFO L226 Difference]: Without dead ends: 19 [2019-10-07 00:54:37,103 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 00:54:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-07 00:54:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-07 00:54:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-07 00:54:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-07 00:54:37,141 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2019-10-07 00:54:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:54:37,141 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-07 00:54:37,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 00:54:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-07 00:54:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 00:54:37,143 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:37,143 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:54:37,143 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:37,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:37,144 INFO L82 PathProgramCache]: Analyzing trace with hash 635448652, now seen corresponding path program 1 times [2019-10-07 00:54:37,144 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:37,145 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:37,145 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:37,145 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:54:37,258 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:37,258 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:54:37,258 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 00:54:37,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 00:54:37,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 00:54:37,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:54:37,261 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2019-10-07 00:54:37,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:54:37,309 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-07 00:54:37,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 00:54:37,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-07 00:54:37,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:54:37,311 INFO L225 Difference]: With dead ends: 29 [2019-10-07 00:54:37,311 INFO L226 Difference]: Without dead ends: 20 [2019-10-07 00:54:37,312 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 00:54:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-07 00:54:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-07 00:54:37,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-07 00:54:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-07 00:54:37,318 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-10-07 00:54:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:54:37,319 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-07 00:54:37,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 00:54:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-07 00:54:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-07 00:54:37,320 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:54:37,320 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:54:37,321 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:54:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:54:37,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1863783115, now seen corresponding path program 1 times [2019-10-07 00:54:37,322 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:54:37,322 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:37,322 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:37,322 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:54:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:54:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:54:37,397 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:54:37,397 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:54:37,397 INFO L95 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 [2019-10-07 00:54:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:54:37,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 00:54:37,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:54:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:54:37,540 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 00:54:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 00:54:37,583 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 00:54:37,610 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-07 00:54:37,611 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 00:54:37,617 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 00:54:37,625 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 00:54:37,626 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 00:54:37,835 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 30 for LOIs [2019-10-07 00:54:38,040 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-07 00:54:38,259 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:54:38,260 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$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$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:146) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:275) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:263) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:237) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:216) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 00:54:38,267 INFO L168 Benchmark]: Toolchain (without parser) took 2629.61 ms. Allocated memory was 144.2 MB in the beginning and 232.3 MB in the end (delta: 88.1 MB). Free memory was 102.6 MB in the beginning and 175.1 MB in the end (delta: -72.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:38,268 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:54:38,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.09 ms. Allocated memory is still 144.2 MB. Free memory was 102.2 MB in the beginning and 92.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:38,270 INFO L168 Benchmark]: Boogie Preprocessor took 146.53 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 179.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:38,270 INFO L168 Benchmark]: RCFGBuilder took 536.85 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 155.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:38,271 INFO L168 Benchmark]: TraceAbstraction took 1562.27 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 154.8 MB in the beginning and 175.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-10-07 00:54:38,283 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.09 ms. Allocated memory is still 144.2 MB. Free memory was 102.2 MB in the beginning and 92.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.53 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 179.5 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 536.85 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 155.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1562.27 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 154.8 MB in the beginning and 175.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 10.6 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...