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-efa34d5 [2019-09-16 16:14:09,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:14:09,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:14:09,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:14:09,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:14:09,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:14:09,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:14:09,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:14:09,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:14:09,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:14:09,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:14:09,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:14:09,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:14:09,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:14:09,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:14:09,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:14:09,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:14:09,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:14:09,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:14:09,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:14:09,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:14:09,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:14:09,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:14:09,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:14:09,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:14:09,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:14:09,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:14:09,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:14:09,856 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 [2019-09-16 16:14:09,871 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:14:09,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:14:09,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:14:09,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:14:09,873 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:14:09,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:14:09,874 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:14:09,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:14:09,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:14:09,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:14:09,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:14:09,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:14:09,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:14:09,875 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:14:09,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:14:09,875 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:14:09,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:14:09,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:14:09,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:14:09,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:14:09,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:14:09,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:14:09,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:14:09,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:14:09,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:14:09,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:14:09,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:14:09,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:14:09,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:14:09,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:14:09,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:14:09,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:14:09,923 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:14:09,923 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:14:09,924 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr3.c [2019-09-16 16:14:09,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ddd97a1/4f58bcba65a8477d829564880121a5ae/FLAGc9164d26d [2019-09-16 16:14:10,410 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:14:10,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr3.c [2019-09-16 16:14:10,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ddd97a1/4f58bcba65a8477d829564880121a5ae/FLAGc9164d26d [2019-09-16 16:14:10,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0ddd97a1/4f58bcba65a8477d829564880121a5ae [2019-09-16 16:14:10,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:14:10,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:14:10,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:14:10,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:14:10,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:14:10,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:14:10" (1/1) ... [2019-09-16 16:14:10,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da2ec92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:10, skipping insertion in model container [2019-09-16 16:14:10,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:14:10" (1/1) ... [2019-09-16 16:14:10,823 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:14:10,841 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:14:11,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:14:11,056 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:14:11,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:14:11,193 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:14:11,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11 WrapperNode [2019-09-16 16:14:11,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:14:11,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:14:11,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:14:11,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:14:11,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (1/1) ... [2019-09-16 16:14:11,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (1/1) ... [2019-09-16 16:14:11,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (1/1) ... [2019-09-16 16:14:11,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (1/1) ... [2019-09-16 16:14:11,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (1/1) ... [2019-09-16 16:14:11,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (1/1) ... [2019-09-16 16:14:11,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (1/1) ... [2019-09-16 16:14:11,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:14:11,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:14:11,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:14:11,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:14:11,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (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 [2019-09-16 16:14:11,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:14:11,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:14:11,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:14:11,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:14:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:14:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:14:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:14:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:14:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:14:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 16:14:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 16:14:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 16:14:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 16:14:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:14:11,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:14:11,661 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:14:11,661 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-16 16:14:11,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:14:11 BoogieIcfgContainer [2019-09-16 16:14:11,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:14:11,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:14:11,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:14:11,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:14:11,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:14:10" (1/3) ... [2019-09-16 16:14:11,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55849ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:14:11, skipping insertion in model container [2019-09-16 16:14:11,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:14:11" (2/3) ... [2019-09-16 16:14:11,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55849ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:14:11, skipping insertion in model container [2019-09-16 16:14:11,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:14:11" (3/3) ... [2019-09-16 16:14:11,670 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2019-09-16 16:14:11,679 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:14:11,687 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:14:11,701 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:14:11,726 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:14:11,726 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:14:11,726 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:14:11,727 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:14:11,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:14:11,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:14:11,727 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:14:11,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:14:11,727 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:14:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-09-16 16:14:11,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 16:14:11,747 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:14:11,748 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] [2019-09-16 16:14:11,749 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:14:11,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:14:11,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1164915713, now seen corresponding path program 1 times [2019-09-16 16:14:11,755 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:14:11,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:14:11,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:11,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:14:11,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:14:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:14:11,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:14:11,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:14:11,921 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:14:11,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:14:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:14:11,939 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2019-09-16 16:14:11,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:14:11,965 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2019-09-16 16:14:11,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:14:11,967 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-09-16 16:14:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:14:11,976 INFO L225 Difference]: With dead ends: 68 [2019-09-16 16:14:11,976 INFO L226 Difference]: Without dead ends: 34 [2019-09-16 16:14:11,980 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 [2019-09-16 16:14:11,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-16 16:14:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-09-16 16:14:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-16 16:14:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-09-16 16:14:12,025 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 20 [2019-09-16 16:14:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:14:12,026 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-09-16 16:14:12,026 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:14:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-09-16 16:14:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 16:14:12,028 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:14:12,029 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] [2019-09-16 16:14:12,029 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:14:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:14:12,030 INFO L82 PathProgramCache]: Analyzing trace with hash 208061977, now seen corresponding path program 1 times [2019-09-16 16:14:12,030 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:14:12,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:14:12,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:12,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:14:12,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:14:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:14:12,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:14:12,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:14:12,206 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:14:12,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:14:12,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:14:12,208 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 5 states. [2019-09-16 16:14:12,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:14:12,284 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2019-09-16 16:14:12,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:14:12,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-16 16:14:12,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:14:12,287 INFO L225 Difference]: With dead ends: 42 [2019-09-16 16:14:12,288 INFO L226 Difference]: Without dead ends: 40 [2019-09-16 16:14:12,289 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 [2019-09-16 16:14:12,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-16 16:14:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-09-16 16:14:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-16 16:14:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-09-16 16:14:12,305 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 20 [2019-09-16 16:14:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:14:12,306 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-09-16 16:14:12,306 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:14:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-09-16 16:14:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-16 16:14:12,309 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:14:12,309 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] [2019-09-16 16:14:12,309 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:14:12,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:14:12,310 INFO L82 PathProgramCache]: Analyzing trace with hash 209909019, now seen corresponding path program 1 times [2019-09-16 16:14:12,310 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:14:12,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:14:12,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:12,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:14:12,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:14:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:14:12,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:14:12,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 16:14:12,543 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 16:14:12,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 16:14:12,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:14:12,544 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 4 states. [2019-09-16 16:14:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:14:12,636 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2019-09-16 16:14:12,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 16:14:12,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-09-16 16:14:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:14:12,640 INFO L225 Difference]: With dead ends: 70 [2019-09-16 16:14:12,640 INFO L226 Difference]: Without dead ends: 43 [2019-09-16 16:14:12,641 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 [2019-09-16 16:14:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-16 16:14:12,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-09-16 16:14:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-16 16:14:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2019-09-16 16:14:12,650 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 20 [2019-09-16 16:14:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:14:12,650 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2019-09-16 16:14:12,651 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 16:14:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2019-09-16 16:14:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 16:14:12,654 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:14:12,654 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] [2019-09-16 16:14:12,655 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:14:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:14:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2624448, now seen corresponding path program 1 times [2019-09-16 16:14:12,655 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:14:12,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:14:12,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:12,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:14:12,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:14:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 16:14:12,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:14:12,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:14:12,985 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:14:12,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:14:12,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:14:12,986 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2019-09-16 16:14:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:14:13,102 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2019-09-16 16:14:13,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 16:14:13,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-09-16 16:14:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:14:13,104 INFO L225 Difference]: With dead ends: 73 [2019-09-16 16:14:13,104 INFO L226 Difference]: Without dead ends: 51 [2019-09-16 16:14:13,105 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 [2019-09-16 16:14:13,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-09-16 16:14:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2019-09-16 16:14:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-16 16:14:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-09-16 16:14:13,113 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 24 [2019-09-16 16:14:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:14:13,113 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-09-16 16:14:13,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:14:13,113 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-09-16 16:14:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-16 16:14:13,114 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:14:13,115 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] [2019-09-16 16:14:13,115 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:14:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:14:13,115 INFO L82 PathProgramCache]: Analyzing trace with hash -342662518, now seen corresponding path program 1 times [2019-09-16 16:14:13,115 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:14:13,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:14:13,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:13,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:14:13,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:14:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-16 16:14:13,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:14:13,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 16:14:13,169 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 16:14:13,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 16:14:13,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:14:13,170 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 3 states. [2019-09-16 16:14:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:14:13,187 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2019-09-16 16:14:13,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 16:14:13,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-09-16 16:14:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:14:13,188 INFO L225 Difference]: With dead ends: 63 [2019-09-16 16:14:13,189 INFO L226 Difference]: Without dead ends: 42 [2019-09-16 16:14:13,189 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 [2019-09-16 16:14:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-16 16:14:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-16 16:14:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-16 16:14:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-09-16 16:14:13,197 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 32 [2019-09-16 16:14:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:14:13,197 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-09-16 16:14:13,197 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 16:14:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-09-16 16:14:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-16 16:14:13,198 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:14:13,198 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] [2019-09-16 16:14:13,199 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:14:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:14:13,199 INFO L82 PathProgramCache]: Analyzing trace with hash 358402060, now seen corresponding path program 1 times [2019-09-16 16:14:13,199 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:14:13,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:14:13,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:13,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:14:13,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:14:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:14:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:14:14,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:14:14,356 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) [2019-09-16 16:14:14,392 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 [2019-09-16 16:14:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:14:14,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-16 16:14:14,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:14:14,542 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 [2019-09-16 16:14:14,543 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:14:14,559 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:14:14,560 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:14:14,560 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-09-16 16:14:14,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:14:14,794 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:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) 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) [2019-09-16 16:14:14,800 INFO L168 Benchmark]: Toolchain (without parser) took 3991.42 ms. Allocated memory was 132.1 MB in the beginning and 263.2 MB in the end (delta: 131.1 MB). Free memory was 86.3 MB in the beginning and 167.2 MB in the end (delta: -80.9 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:14:14,801 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 132.1 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:14:14,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.09 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 86.1 MB in the beginning and 174.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:14:14,803 INFO L168 Benchmark]: Boogie Preprocessor took 46.04 ms. Allocated memory is still 199.2 MB. Free memory was 174.6 MB in the beginning and 172.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-09-16 16:14:14,804 INFO L168 Benchmark]: RCFGBuilder took 421.55 ms. Allocated memory is still 199.2 MB. Free memory was 172.7 MB in the beginning and 153.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2019-09-16 16:14:14,805 INFO L168 Benchmark]: TraceAbstraction took 3135.08 ms. Allocated memory was 199.2 MB in the beginning and 263.2 MB in the end (delta: 64.0 MB). Free memory was 153.0 MB in the beginning and 167.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:14:14,809 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 132.1 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.09 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 86.1 MB in the beginning and 174.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.04 ms. Allocated memory is still 199.2 MB. Free memory was 174.6 MB in the beginning and 172.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.55 ms. Allocated memory is still 199.2 MB. Free memory was 172.7 MB in the beginning and 153.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3135.08 ms. Allocated memory was 199.2 MB in the beginning and 263.2 MB in the end (delta: 64.0 MB). Free memory was 153.0 MB in the beginning and 167.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...