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 -i ../../../trunk/examples/svcomp/array-tiling/mbpr3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:59:12,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:59:12,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:59:12,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:59:12,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:59:12,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:59:12,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:59:12,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:59:12,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:59:12,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:59:12,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:59:12,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:59:12,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:59:12,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:59:12,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:59:12,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:59:12,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:59:12,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:59:12,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:59:12,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:59:12,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:59:12,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:59:12,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:59:12,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:59:12,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:59:12,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:59:12,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:59:12,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:59:12,722 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 [2019-09-20 12:59:12,748 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:59:12,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:59:12,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:59:12,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:59:12,750 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:59:12,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:59:12,751 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:59:12,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:59:12,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:59:12,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:59:12,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:59:12,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:59:12,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:59:12,752 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:59:12,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:59:12,752 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:59:12,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:59:12,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:59:12,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:59:12,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:59:12,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:59:12,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:59:12,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:59:12,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:59:12,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:59:12,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:59:12,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:59:12,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:59:12,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:59:12,783 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:59:12,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:59:12,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:59:12,800 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:59:12,801 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:59:12,801 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr3.c [2019-09-20 12:59:12,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f86b182f/13635431510142c98f62549001a7bdd1/FLAG94cfd15e6 [2019-09-20 12:59:13,343 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:59:13,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr3.c [2019-09-20 12:59:13,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f86b182f/13635431510142c98f62549001a7bdd1/FLAG94cfd15e6 [2019-09-20 12:59:13,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f86b182f/13635431510142c98f62549001a7bdd1 [2019-09-20 12:59:13,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:59:13,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:59:13,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:59:13,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:59:13,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:59:13,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:59:13" (1/1) ... [2019-09-20 12:59:13,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3d72b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:13, skipping insertion in model container [2019-09-20 12:59:13,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:59:13" (1/1) ... [2019-09-20 12:59:13,750 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:59:13,768 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:59:13,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:59:13,957 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:59:13,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:59:14,095 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:59:14,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14 WrapperNode [2019-09-20 12:59:14,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:59:14,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:59:14,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:59:14,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:59:14,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (1/1) ... [2019-09-20 12:59:14,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (1/1) ... [2019-09-20 12:59:14,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (1/1) ... [2019-09-20 12:59:14,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (1/1) ... [2019-09-20 12:59:14,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (1/1) ... [2019-09-20 12:59:14,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (1/1) ... [2019-09-20 12:59:14,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (1/1) ... [2019-09-20 12:59:14,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:59:14,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:59:14,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:59:14,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:59:14,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (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 [2019-09-20 12:59:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:59:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:59:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:59:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:59:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:59:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:59:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:59:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:59:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:59:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 12:59:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 12:59:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 12:59:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 12:59:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:59:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:59:14,545 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:59:14,545 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 12:59:14,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:59:14 BoogieIcfgContainer [2019-09-20 12:59:14,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:59:14,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:59:14,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:59:14,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:59:14,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:59:13" (1/3) ... [2019-09-20 12:59:14,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ed9367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:59:14, skipping insertion in model container [2019-09-20 12:59:14,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:14" (2/3) ... [2019-09-20 12:59:14,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ed9367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:59:14, skipping insertion in model container [2019-09-20 12:59:14,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:59:14" (3/3) ... [2019-09-20 12:59:14,554 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2019-09-20 12:59:14,563 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:59:14,571 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:59:14,587 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:59:14,616 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:59:14,617 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:59:14,617 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:59:14,618 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:59:14,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:59:14,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:59:14,618 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:59:14,620 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:59:14,620 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:59:14,636 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-09-20 12:59:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 12:59:14,642 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:14,643 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:14,645 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1164915713, now seen corresponding path program 1 times [2019-09-20 12:59:14,650 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:14,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:14,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:14,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:14,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:14,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:14,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:59:14,833 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:59:14,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:59:14,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:59:14,851 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-09-20 12:59:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:14,893 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2019-09-20 12:59:14,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:59:14,895 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-09-20 12:59:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:14,908 INFO L225 Difference]: With dead ends: 68 [2019-09-20 12:59:14,909 INFO L226 Difference]: Without dead ends: 34 [2019-09-20 12:59:14,916 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:59:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-20 12:59:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-09-20 12:59:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-20 12:59:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-09-20 12:59:14,980 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 20 [2019-09-20 12:59:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:14,982 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-09-20 12:59:14,983 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:59:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-09-20 12:59:14,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 12:59:14,986 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:14,987 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:14,988 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:14,989 INFO L82 PathProgramCache]: Analyzing trace with hash 208061977, now seen corresponding path program 1 times [2019-09-20 12:59:14,990 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:14,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:14,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:14,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:14,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:15,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:15,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:59:15,200 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:59:15,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:59:15,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:59:15,202 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 5 states. [2019-09-20 12:59:15,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:15,283 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2019-09-20 12:59:15,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 12:59:15,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-20 12:59:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:15,287 INFO L225 Difference]: With dead ends: 42 [2019-09-20 12:59:15,287 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 12:59:15,289 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 12:59:15,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 12:59:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-09-20 12:59:15,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 12:59:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-09-20 12:59:15,305 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 20 [2019-09-20 12:59:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:15,305 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-09-20 12:59:15,306 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:59:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-09-20 12:59:15,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 12:59:15,307 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:15,307 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:15,307 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:15,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:15,308 INFO L82 PathProgramCache]: Analyzing trace with hash 209909019, now seen corresponding path program 1 times [2019-09-20 12:59:15,308 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:15,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:15,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:15,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:15,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:15,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:15,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 12:59:15,508 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 12:59:15,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 12:59:15,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 12:59:15,510 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 4 states. [2019-09-20 12:59:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:15,614 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2019-09-20 12:59:15,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 12:59:15,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-09-20 12:59:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:15,618 INFO L225 Difference]: With dead ends: 70 [2019-09-20 12:59:15,618 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 12:59:15,619 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 12:59:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 12:59:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-09-20 12:59:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 12:59:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2019-09-20 12:59:15,627 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 20 [2019-09-20 12:59:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:15,628 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2019-09-20 12:59:15,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 12:59:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2019-09-20 12:59:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 12:59:15,629 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:15,629 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:15,630 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:15,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:15,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2624448, now seen corresponding path program 1 times [2019-09-20 12:59:15,630 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:15,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:15,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:15,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:15,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 12:59:15,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:15,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:59:15,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:59:15,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:59:15,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:59:15,948 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2019-09-20 12:59:16,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:16,054 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2019-09-20 12:59:16,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 12:59:16,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-09-20 12:59:16,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:16,055 INFO L225 Difference]: With dead ends: 73 [2019-09-20 12:59:16,056 INFO L226 Difference]: Without dead ends: 51 [2019-09-20 12:59:16,056 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:59:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-09-20 12:59:16,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2019-09-20 12:59:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-20 12:59:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-09-20 12:59:16,065 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 24 [2019-09-20 12:59:16,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:16,065 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-09-20 12:59:16,065 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:59:16,066 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-09-20 12:59:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-20 12:59:16,067 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:16,067 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:16,067 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:16,068 INFO L82 PathProgramCache]: Analyzing trace with hash -342662518, now seen corresponding path program 1 times [2019-09-20 12:59:16,068 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:16,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:16,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:16,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:16,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 12:59:16,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:16,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 12:59:16,144 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 12:59:16,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 12:59:16,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 12:59:16,145 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 3 states. [2019-09-20 12:59:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:16,170 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2019-09-20 12:59:16,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 12:59:16,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-09-20 12:59:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:16,172 INFO L225 Difference]: With dead ends: 63 [2019-09-20 12:59:16,173 INFO L226 Difference]: Without dead ends: 42 [2019-09-20 12:59:16,176 INFO L636 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 [2019-09-20 12:59:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-20 12:59:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-20 12:59:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-20 12:59:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-09-20 12:59:16,193 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 32 [2019-09-20 12:59:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:16,194 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-09-20 12:59:16,198 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 12:59:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-09-20 12:59:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-20 12:59:16,200 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:16,200 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:16,200 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:16,201 INFO L82 PathProgramCache]: Analyzing trace with hash 358402060, now seen corresponding path program 1 times [2019-09-20 12:59:16,201 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:16,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:16,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:16,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:16,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:16,864 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 35 [2019-09-20 12:59:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:17,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:59:17,441 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 12:59:17,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:59:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:17,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-20 12:59:17,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:59:17,659 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-09-20 12:59:17,659 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 12:59:17,668 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 12:59:17,670 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 12:59:17,670 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-09-20 12:59:17,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:59:17,910 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.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.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) 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) [2019-09-20 12:59:17,916 INFO L168 Benchmark]: Toolchain (without parser) took 4178.77 ms. Allocated memory was 131.6 MB in the beginning and 265.3 MB in the end (delta: 133.7 MB). Free memory was 86.9 MB in the beginning and 165.8 MB in the end (delta: -78.8 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:17,917 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory was 105.7 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:59:17,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.57 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 86.7 MB in the beginning and 175.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:17,919 INFO L168 Benchmark]: Boogie Preprocessor took 42.51 ms. Allocated memory is still 198.7 MB. Free memory was 175.3 MB in the beginning and 172.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:17,920 INFO L168 Benchmark]: RCFGBuilder took 407.42 ms. Allocated memory is still 198.7 MB. Free memory was 172.9 MB in the beginning and 153.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:17,921 INFO L168 Benchmark]: TraceAbstraction took 3366.80 ms. Allocated memory was 198.7 MB in the beginning and 265.3 MB in the end (delta: 66.6 MB). Free memory was 152.8 MB in the beginning and 165.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:17,925 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory was 105.7 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.57 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 86.7 MB in the beginning and 175.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.51 ms. Allocated memory is still 198.7 MB. Free memory was 175.3 MB in the beginning and 172.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.42 ms. Allocated memory is still 198.7 MB. Free memory was 172.9 MB in the beginning and 153.4 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3366.80 ms. Allocated memory was 198.7 MB in the beginning and 265.3 MB in the end (delta: 66.6 MB). Free memory was 152.8 MB in the beginning and 165.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...