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 0.1.24-36ac518-m [2019-10-07 00:40:07,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 00:40:07,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 00:40:07,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 00:40:07,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 00:40:07,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 00:40:07,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 00:40:07,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 00:40:07,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 00:40:07,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 00:40:07,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 00:40:07,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 00:40:07,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 00:40:07,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 00:40:07,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 00:40:07,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 00:40:07,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 00:40:07,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 00:40:07,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 00:40:07,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 00:40:07,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 00:40:07,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 00:40:07,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 00:40:07,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 00:40:07,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 00:40:07,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 00:40:07,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 00:40:07,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 00:40:07,249 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 00:40:07,283 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 00:40:07,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 00:40:07,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 00:40:07,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 00:40:07,286 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 00:40:07,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 00:40:07,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 00:40:07,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 00:40:07,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 00:40:07,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 00:40:07,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 00:40:07,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 00:40:07,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 00:40:07,290 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 00:40:07,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 00:40:07,291 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 00:40:07,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 00:40:07,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 00:40:07,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 00:40:07,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 00:40:07,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 00:40:07,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 00:40:07,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 00:40:07,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 00:40:07,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 00:40:07,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 00:40:07,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 00:40:07,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 00:40:07,294 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 00:40:07,624 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 00:40:07,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 00:40:07,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 00:40:07,650 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 00:40:07,651 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 00:40:07,651 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr3.c [2019-10-07 00:40:07,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae975331/caccce6843b44c35aec37699c32692e8/FLAG50b43431e [2019-10-07 00:40:08,226 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 00:40:08,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr3.c [2019-10-07 00:40:08,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae975331/caccce6843b44c35aec37699c32692e8/FLAG50b43431e [2019-10-07 00:40:08,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ae975331/caccce6843b44c35aec37699c32692e8 [2019-10-07 00:40:08,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 00:40:08,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 00:40:08,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 00:40:08,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 00:40:08,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 00:40:08,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:40:08" (1/1) ... [2019-10-07 00:40:08,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7007e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:08, skipping insertion in model container [2019-10-07 00:40:08,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:40:08" (1/1) ... [2019-10-07 00:40:08,630 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 00:40:08,653 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 00:40:08,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:40:08,882 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 00:40:08,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 00:40:09,032 INFO L192 MainTranslator]: Completed translation [2019-10-07 00:40:09,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09 WrapperNode [2019-10-07 00:40:09,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 00:40:09,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 00:40:09,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 00:40:09,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 00:40:09,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (1/1) ... [2019-10-07 00:40:09,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (1/1) ... [2019-10-07 00:40:09,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (1/1) ... [2019-10-07 00:40:09,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (1/1) ... [2019-10-07 00:40:09,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (1/1) ... [2019-10-07 00:40:09,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (1/1) ... [2019-10-07 00:40:09,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (1/1) ... [2019-10-07 00:40:09,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 00:40:09,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 00:40:09,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 00:40:09,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 00:40:09,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (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 00:40:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 00:40:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 00:40:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 00:40:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 00:40:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 00:40:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 00:40:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 00:40:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 00:40:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 00:40:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 00:40:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 00:40:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 00:40:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 00:40:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 00:40:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 00:40:09,741 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 00:40:09,741 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 00:40:09,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:40:09 BoogieIcfgContainer [2019-10-07 00:40:09,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 00:40:09,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 00:40:09,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 00:40:09,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 00:40:09,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:40:08" (1/3) ... [2019-10-07 00:40:09,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb4bd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:40:09, skipping insertion in model container [2019-10-07 00:40:09,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:40:09" (2/3) ... [2019-10-07 00:40:09,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb4bd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:40:09, skipping insertion in model container [2019-10-07 00:40:09,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:40:09" (3/3) ... [2019-10-07 00:40:09,753 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2019-10-07 00:40:09,763 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 00:40:09,772 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 00:40:09,785 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 00:40:09,811 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 00:40:09,812 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 00:40:09,812 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 00:40:09,812 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 00:40:09,812 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 00:40:09,812 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 00:40:09,812 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 00:40:09,813 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 00:40:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-07 00:40:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 00:40:09,834 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:40:09,834 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:40:09,836 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:40:09,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:40:09,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1766250558, now seen corresponding path program 1 times [2019-10-07 00:40:09,849 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:40:09,849 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:40:09,849 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:40:09,850 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:40:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:40:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:40:10,356 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 00:40:10,357 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:40:10,358 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 00:40:10,361 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 00:40:10,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 00:40:10,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 00:40:10,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:40:10,391 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2019-10-07 00:40:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 00:40:10,556 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2019-10-07 00:40:10,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 00:40:10,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-07 00:40:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 00:40:10,568 INFO L225 Difference]: With dead ends: 52 [2019-10-07 00:40:10,569 INFO L226 Difference]: Without dead ends: 22 [2019-10-07 00:40:10,573 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 00:40:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-07 00:40:10,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-07 00:40:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-07 00:40:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-10-07 00:40:10,620 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2019-10-07 00:40:10,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 00:40:10,621 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-10-07 00:40:10,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 00:40:10,621 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-10-07 00:40:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-07 00:40:10,622 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 00:40:10,622 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 00:40:10,623 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 00:40:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 00:40:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1973406544, now seen corresponding path program 1 times [2019-10-07 00:40:10,624 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 00:40:10,624 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:40:10,624 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:40:10,625 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 00:40:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 00:40:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:40:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 00:40:11,525 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 00:40:11,525 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 00:40:11,525 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 00:40:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 00:40:11,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-07 00:40:11,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 00:40:11,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 00:40:11,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 00:40:11,940 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$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: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 00:40:11,946 INFO L168 Benchmark]: Toolchain (without parser) took 3330.66 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 104.0 MB in the beginning and 109.7 MB in the end (delta: -5.8 MB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. [2019-10-07 00:40:11,947 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 00:40:11,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.04 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 103.8 MB in the beginning and 182.1 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2019-10-07 00:40:11,949 INFO L168 Benchmark]: Boogie Preprocessor took 67.50 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 179.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-07 00:40:11,950 INFO L168 Benchmark]: RCFGBuilder took 642.37 ms. Allocated memory is still 203.4 MB. Free memory was 179.8 MB in the beginning and 146.9 MB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:40:11,952 INFO L168 Benchmark]: TraceAbstraction took 2199.09 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 146.2 MB in the beginning and 109.7 MB in the end (delta: 36.5 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. [2019-10-07 00:40:11,956 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 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.04 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 103.8 MB in the beginning and 182.1 MB in the end (delta: -78.3 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.50 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 179.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 642.37 ms. Allocated memory is still 203.4 MB. Free memory was 179.8 MB in the beginning and 146.9 MB in the end (delta: 32.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2199.09 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 146.2 MB in the beginning and 109.7 MB in the end (delta: 36.5 MB). Peak memory consumption was 67.9 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...