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/rewnifrev2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 11:43:57,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 11:43:57,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 11:43:57,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 11:43:57,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 11:43:57,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 11:43:57,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 11:43:57,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 11:43:57,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 11:43:57,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 11:43:57,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 11:43:57,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 11:43:57,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 11:43:57,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 11:43:57,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 11:43:57,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 11:43:57,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 11:43:57,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 11:43:57,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 11:43:57,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 11:43:57,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 11:43:57,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 11:43:57,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 11:43:57,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 11:43:57,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 11:43:57,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 11:43:57,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 11:43:57,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 11:43:57,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 11:43:57,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 11:43:57,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 11:43:57,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 11:43:57,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 11:43:57,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 11:43:57,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 11:43:57,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 11:43:57,179 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 [2019-09-07 11:43:57,210 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 11:43:57,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 11:43:57,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 11:43:57,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 11:43:57,214 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 11:43:57,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 11:43:57,214 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 11:43:57,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 11:43:57,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 11:43:57,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 11:43:57,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 11:43:57,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 11:43:57,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 11:43:57,216 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 11:43:57,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 11:43:57,216 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 11:43:57,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 11:43:57,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 11:43:57,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 11:43:57,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 11:43:57,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 11:43:57,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 11:43:57,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 11:43:57,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 11:43:57,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 11:43:57,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 11:43:57,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 11:43:57,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 11:43:57,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 11:43:57,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 11:43:57,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 11:43:57,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 11:43:57,274 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 11:43:57,275 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 11:43:57,276 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev2.c [2019-09-07 11:43:57,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea3a828d/c697a9ce72af44448f7c083af29efb64/FLAG204b80cae [2019-09-07 11:43:57,804 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 11:43:57,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnifrev2.c [2019-09-07 11:43:57,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea3a828d/c697a9ce72af44448f7c083af29efb64/FLAG204b80cae [2019-09-07 11:43:58,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea3a828d/c697a9ce72af44448f7c083af29efb64 [2019-09-07 11:43:58,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 11:43:58,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 11:43:58,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 11:43:58,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 11:43:58,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 11:43:58,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b519728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58, skipping insertion in model container [2019-09-07 11:43:58,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,202 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 11:43:58,220 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 11:43:58,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 11:43:58,403 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 11:43:58,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 11:43:58,439 INFO L192 MainTranslator]: Completed translation [2019-09-07 11:43:58,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58 WrapperNode [2019-09-07 11:43:58,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 11:43:58,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 11:43:58,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 11:43:58,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 11:43:58,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (1/1) ... [2019-09-07 11:43:58,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 11:43:58,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 11:43:58,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 11:43:58,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 11:43:58,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (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 [2019-09-07 11:43:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 11:43:58,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 11:43:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-07 11:43:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 11:43:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 11:43:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-07 11:43:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-07 11:43:58,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 11:43:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-07 11:43:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 11:43:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-07 11:43:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-07 11:43:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-07 11:43:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 11:43:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 11:43:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-07 11:43:58,905 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 11:43:58,905 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-07 11:43:58,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:43:58 BoogieIcfgContainer [2019-09-07 11:43:58,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 11:43:58,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 11:43:58,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 11:43:58,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 11:43:58,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:43:58" (1/3) ... [2019-09-07 11:43:58,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29321c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:43:58, skipping insertion in model container [2019-09-07 11:43:58,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:43:58" (2/3) ... [2019-09-07 11:43:58,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29321c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:43:58, skipping insertion in model container [2019-09-07 11:43:58,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:43:58" (3/3) ... [2019-09-07 11:43:58,927 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnifrev2.c [2019-09-07 11:43:58,938 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 11:43:58,948 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 11:43:58,967 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 11:43:58,991 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 11:43:58,992 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 11:43:58,992 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 11:43:58,992 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 11:43:58,992 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 11:43:58,992 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 11:43:58,992 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 11:43:58,992 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 11:43:58,992 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 11:43:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-07 11:43:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-07 11:43:59,013 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:43:59,014 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:43:59,016 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:43:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:43:59,022 INFO L82 PathProgramCache]: Analyzing trace with hash -516860939, now seen corresponding path program 1 times [2019-09-07 11:43:59,023 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:43:59,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:43:59,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:43:59,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:43:59,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:43:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:43:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 11:43:59,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 11:43:59,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-07 11:43:59,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-07 11:43:59,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-07 11:43:59,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-07 11:43:59,191 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-09-07 11:43:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:43:59,211 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2019-09-07 11:43:59,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-07 11:43:59,213 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-07 11:43:59,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:43:59,221 INFO L225 Difference]: With dead ends: 41 [2019-09-07 11:43:59,222 INFO L226 Difference]: Without dead ends: 20 [2019-09-07 11:43:59,225 INFO L628 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 [2019-09-07 11:43:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-07 11:43:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-07 11:43:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-07 11:43:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-09-07 11:43:59,263 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2019-09-07 11:43:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:43:59,264 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-09-07 11:43:59,264 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-07 11:43:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-09-07 11:43:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-07 11:43:59,266 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:43:59,266 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:43:59,266 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:43:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:43:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1546915729, now seen corresponding path program 1 times [2019-09-07 11:43:59,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:43:59,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:43:59,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:43:59,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:43:59,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:43:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:43:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 11:43:59,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 11:43:59,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 11:43:59,334 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 11:43:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 11:43:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 11:43:59,335 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2019-09-07 11:43:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:43:59,388 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-09-07 11:43:59,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 11:43:59,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-07 11:43:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:43:59,389 INFO L225 Difference]: With dead ends: 32 [2019-09-07 11:43:59,390 INFO L226 Difference]: Without dead ends: 21 [2019-09-07 11:43:59,391 INFO L628 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 [2019-09-07 11:43:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-07 11:43:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-07 11:43:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-07 11:43:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-07 11:43:59,397 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-09-07 11:43:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:43:59,397 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-07 11:43:59,397 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 11:43:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-07 11:43:59,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-07 11:43:59,398 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:43:59,398 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:43:59,399 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:43:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:43:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash -586037587, now seen corresponding path program 1 times [2019-09-07 11:43:59,399 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:43:59,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:43:59,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:43:59,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:43:59,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:43:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:43:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 11:43:59,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 11:43:59,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-07 11:43:59,780 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 11:43:59,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 11:43:59,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-09-07 11:43:59,781 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states. [2019-09-07 11:43:59,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:43:59,950 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-09-07 11:43:59,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 11:43:59,950 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-09-07 11:43:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:43:59,952 INFO L225 Difference]: With dead ends: 31 [2019-09-07 11:43:59,952 INFO L226 Difference]: Without dead ends: 29 [2019-09-07 11:43:59,953 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-09-07 11:43:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-07 11:43:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-09-07 11:43:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-07 11:43:59,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-09-07 11:43:59,962 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-09-07 11:43:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:43:59,963 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-09-07 11:43:59,963 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 11:43:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-09-07 11:43:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-07 11:43:59,964 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:43:59,965 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:43:59,966 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:43:59,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:43:59,966 INFO L82 PathProgramCache]: Analyzing trace with hash -798788415, now seen corresponding path program 1 times [2019-09-07 11:43:59,966 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:43:59,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:43:59,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:43:59,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:43:59,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 11:44:00,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:00,312 INFO L223 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:00,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:44:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:00,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-07 11:44:00,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:00,458 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:00,491 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:00,492 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:00,493 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:00,501 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:00,502 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:00,502 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-09-07 11:44:00,945 INFO L341 Elim1Store]: treesize reduction 17, result has 66.7 percent of original size [2019-09-07 11:44:00,945 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2019-09-07 11:44:00,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:00,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:00,954 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-09-07 11:44:00,978 INFO L567 ElimStorePlain]: treesize reduction 51, result has 22.7 percent of original size [2019-09-07 11:44:00,980 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:00,980 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:7 [2019-09-07 11:44:01,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-07 11:44:01,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:01,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2019-09-07 11:44:01,059 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 11:44:01,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 11:44:01,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-09-07 11:44:01,063 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 21 states. [2019-09-07 11:44:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:01,495 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2019-09-07 11:44:01,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 11:44:01,495 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 24 [2019-09-07 11:44:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:01,497 INFO L225 Difference]: With dead ends: 39 [2019-09-07 11:44:01,497 INFO L226 Difference]: Without dead ends: 37 [2019-09-07 11:44:01,498 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2019-09-07 11:44:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-07 11:44:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-09-07 11:44:01,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-07 11:44:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2019-09-07 11:44:01,508 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2019-09-07 11:44:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:01,508 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2019-09-07 11:44:01,508 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 11:44:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2019-09-07 11:44:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-07 11:44:01,510 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:01,510 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:01,510 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:01,511 INFO L82 PathProgramCache]: Analyzing trace with hash -75510059, now seen corresponding path program 2 times [2019-09-07 11:44:01,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:01,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:01,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:01,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:44:01,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 11:44:01,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:01,623 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 11:44:01,640 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:01,683 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 11:44:01,684 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:44:01,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 11:44:01,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 11:44:01,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:01,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2019-09-07 11:44:01,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 11:44:01,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 11:44:01,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2019-09-07 11:44:01,740 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 11 states. [2019-09-07 11:44:01,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:01,856 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2019-09-07 11:44:01,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 11:44:01,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2019-09-07 11:44:01,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:01,860 INFO L225 Difference]: With dead ends: 66 [2019-09-07 11:44:01,860 INFO L226 Difference]: Without dead ends: 38 [2019-09-07 11:44:01,861 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2019-09-07 11:44:01,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-07 11:44:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-09-07 11:44:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-07 11:44:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2019-09-07 11:44:01,869 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2019-09-07 11:44:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:01,870 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2019-09-07 11:44:01,870 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 11:44:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2019-09-07 11:44:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-07 11:44:01,871 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:01,871 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:01,871 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1971334765, now seen corresponding path program 3 times [2019-09-07 11:44:01,872 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:01,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:01,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:01,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:44:01,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 11:44:02,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:02,188 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:02,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-07 11:44:02,246 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-07 11:44:02,246 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:44:02,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-07 11:44:02,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:02,272 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:02,294 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:02,295 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:02,295 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:02,301 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:02,302 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:02,302 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:31 [2019-09-07 11:44:02,368 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:02,452 INFO L341 Elim1Store]: treesize reduction 132, result has 51.6 percent of original size [2019-09-07 11:44:02,452 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 163 [2019-09-07 11:44:02,453 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:02,504 INFO L567 ElimStorePlain]: treesize reduction 106, result has 36.5 percent of original size [2019-09-07 11:44:02,505 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-07 11:44:02,505 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:61 [2019-09-07 11:44:03,250 INFO L341 Elim1Store]: treesize reduction 34, result has 79.9 percent of original size [2019-09-07 11:44:03,251 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 154 [2019-09-07 11:44:03,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:03,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:03,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:03,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:03,257 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:03,308 INFO L567 ElimStorePlain]: treesize reduction 257, result has 7.9 percent of original size [2019-09-07 11:44:03,309 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:03,309 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:78, output treesize:10 [2019-09-07 11:44:03,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-07 11:44:03,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:03,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 28 [2019-09-07 11:44:03,408 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-07 11:44:03,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-07 11:44:03,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2019-09-07 11:44:03,409 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 28 states. [2019-09-07 11:44:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:04,640 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2019-09-07 11:44:04,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-07 11:44:04,640 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 34 [2019-09-07 11:44:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:04,642 INFO L225 Difference]: With dead ends: 67 [2019-09-07 11:44:04,642 INFO L226 Difference]: Without dead ends: 40 [2019-09-07 11:44:04,644 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=321, Invalid=1319, Unknown=0, NotChecked=0, Total=1640 [2019-09-07 11:44:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-07 11:44:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-09-07 11:44:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-07 11:44:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2019-09-07 11:44:04,652 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2019-09-07 11:44:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:04,652 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2019-09-07 11:44:04,653 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-07 11:44:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2019-09-07 11:44:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-07 11:44:04,654 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:04,654 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:04,654 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:04,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:04,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1502223569, now seen corresponding path program 4 times [2019-09-07 11:44:04,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:04,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:04,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:04,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:44:04,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-07 11:44:05,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:05,018 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:05,041 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-07 11:44:05,061 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 11:44:05,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:44:05,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-07 11:44:05,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:05,094 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:05,095 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:05,095 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:05,105 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:05,106 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:05,106 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:26 [2019-09-07 11:44:05,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:05,176 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:44:05,177 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:44:05,178 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:05,186 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:05,187 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:05,187 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:43 [2019-09-07 11:44:05,749 INFO L341 Elim1Store]: treesize reduction 52, result has 49.5 percent of original size [2019-09-07 11:44:05,750 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 67 [2019-09-07 11:44:05,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:05,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:05,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:05,754 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-09-07 11:44:05,781 INFO L567 ElimStorePlain]: treesize reduction 111, result has 11.9 percent of original size [2019-09-07 11:44:05,782 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:05,782 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:60, output treesize:7 [2019-09-07 11:44:05,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-07 11:44:05,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:05,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2019-09-07 11:44:05,891 INFO L454 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-09-07 11:44:05,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-09-07 11:44:05,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2019-09-07 11:44:05,892 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 29 states. [2019-09-07 11:44:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:07,130 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2019-09-07 11:44:07,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 11:44:07,130 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 36 [2019-09-07 11:44:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:07,131 INFO L225 Difference]: With dead ends: 51 [2019-09-07 11:44:07,131 INFO L226 Difference]: Without dead ends: 49 [2019-09-07 11:44:07,133 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2019-09-07 11:44:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-09-07 11:44:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2019-09-07 11:44:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-07 11:44:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2019-09-07 11:44:07,141 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2019-09-07 11:44:07,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:07,142 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2019-09-07 11:44:07,142 INFO L476 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-09-07 11:44:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2019-09-07 11:44:07,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-07 11:44:07,143 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:07,143 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:07,144 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:07,144 INFO L82 PathProgramCache]: Analyzing trace with hash 734357221, now seen corresponding path program 5 times [2019-09-07 11:44:07,144 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:07,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:07,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:07,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:44:07,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 11:44:07,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:07,738 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:07,748 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-07 11:44:07,820 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-09-07 11:44:07,820 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:44:07,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 40 conjunts are in the unsatisfiable core [2019-09-07 11:44:07,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:07,857 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:07,858 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:07,858 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:07,865 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:07,866 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:07,866 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-09-07 11:44:07,957 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:44:07,958 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:44:07,958 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:07,967 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:07,967 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:07,968 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:43 [2019-09-07 11:44:08,046 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,048 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,049 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,050 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,050 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,051 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,053 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:08,053 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:44:08,054 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:08,068 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:08,069 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:08,069 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:60 [2019-09-07 11:44:08,926 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,927 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,928 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,930 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,931 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,932 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,933 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,935 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 11:44:08,936 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:08,938 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:08,939 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 25 [2019-09-07 11:44:08,940 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:08,946 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:08,947 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:08,948 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:67, output treesize:7 [2019-09-07 11:44:08,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 11:44:09,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:09,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 35 [2019-09-07 11:44:09,038 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-07 11:44:09,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-07 11:44:09,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 11:44:09,039 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 35 states. [2019-09-07 11:44:10,219 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2019-09-07 11:44:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:11,769 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2019-09-07 11:44:11,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-07 11:44:11,770 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 44 [2019-09-07 11:44:11,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:11,772 INFO L225 Difference]: With dead ends: 82 [2019-09-07 11:44:11,772 INFO L226 Difference]: Without dead ends: 59 [2019-09-07 11:44:11,775 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=662, Invalid=3370, Unknown=0, NotChecked=0, Total=4032 [2019-09-07 11:44:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-09-07 11:44:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2019-09-07 11:44:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-09-07 11:44:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-09-07 11:44:11,792 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 44 [2019-09-07 11:44:11,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:11,792 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2019-09-07 11:44:11,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-07 11:44:11,792 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2019-09-07 11:44:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-07 11:44:11,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:11,794 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:11,794 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:11,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:11,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1964993353, now seen corresponding path program 6 times [2019-09-07 11:44:11,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:11,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:11,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:11,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:44:11,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-07 11:44:12,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:12,233 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:12,253 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-07 11:44:12,297 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-09-07 11:44:12,297 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:44:12,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-07 11:44:12,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:12,327 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:12,328 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:12,328 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:12,333 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:12,334 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:12,334 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-09-07 11:44:12,404 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:44:12,405 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:44:12,405 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:12,415 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:12,415 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:12,416 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:43 [2019-09-07 11:44:12,512 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:44:12,512 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:44:12,513 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:12,525 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:12,525 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:12,525 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:57 [2019-09-07 11:44:12,599 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,601 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,602 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,603 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,604 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,605 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,607 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,608 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,609 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,610 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,611 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:12,612 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:12,612 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:44:12,613 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:12,643 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:12,644 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:12,644 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:88, output treesize:74 [2019-09-07 11:44:13,829 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,830 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,831 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,832 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,833 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,834 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,835 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,836 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,837 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,837 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,838 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,840 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,842 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,844 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:13,845 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 11:44:13,848 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:13,848 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 30 [2019-09-07 11:44:13,849 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:13,859 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:13,859 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:13,860 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:80, output treesize:7 [2019-09-07 11:44:13,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-07 11:44:13,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:13,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23] total 39 [2019-09-07 11:44:13,982 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-07 11:44:13,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-07 11:44:13,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2019-09-07 11:44:13,983 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 39 states. [2019-09-07 11:44:17,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:17,004 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2019-09-07 11:44:17,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-07 11:44:17,005 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 54 [2019-09-07 11:44:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:17,006 INFO L225 Difference]: With dead ends: 97 [2019-09-07 11:44:17,006 INFO L226 Difference]: Without dead ends: 70 [2019-09-07 11:44:17,008 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 28 SyntacticMatches, 10 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=781, Invalid=4621, Unknown=0, NotChecked=0, Total=5402 [2019-09-07 11:44:17,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-07 11:44:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2019-09-07 11:44:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-09-07 11:44:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2019-09-07 11:44:17,023 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 54 [2019-09-07 11:44:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:17,023 INFO L475 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2019-09-07 11:44:17,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-07 11:44:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2019-09-07 11:44:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-07 11:44:17,025 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:17,025 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:17,025 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1367718665, now seen corresponding path program 7 times [2019-09-07 11:44:17,026 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:17,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:17,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:17,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:44:17,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-09-07 11:44:17,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:17,777 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:17,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:44:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:17,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 40 conjunts are in the unsatisfiable core [2019-09-07 11:44:17,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:17,848 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:17,849 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:17,849 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:17,854 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:17,854 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:17,855 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:26 [2019-09-07 11:44:17,923 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:44:17,924 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:44:17,924 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:17,931 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:17,931 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:17,931 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:40 [2019-09-07 11:44:18,043 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:44:18,044 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:44:18,045 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:18,055 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:18,055 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:18,056 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:54 [2019-09-07 11:44:18,192 INFO L341 Elim1Store]: treesize reduction 430, result has 10.0 percent of original size [2019-09-07 11:44:18,193 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:44:18,193 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:18,206 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:18,206 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:18,206 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:82, output treesize:68 [2019-09-07 11:44:18,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:18,388 INFO L341 Elim1Store]: treesize reduction 596, result has 9.1 percent of original size [2019-09-07 11:44:18,389 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 99 [2019-09-07 11:44:18,390 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:18,411 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:18,412 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:18,412 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2019-09-07 11:44:20,081 INFO L341 Elim1Store]: treesize reduction 265, result has 27.8 percent of original size [2019-09-07 11:44:20,082 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 133 [2019-09-07 11:44:20,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:20,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:20,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:20,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:20,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:20,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:20,088 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-09-07 11:44:20,157 INFO L567 ElimStorePlain]: treesize reduction 420, result has 3.4 percent of original size [2019-09-07 11:44:20,158 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:20,158 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:102, output treesize:7 [2019-09-07 11:44:20,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 76 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Exception during sending of exit command (exit): Stream closed [2019-09-07 11:44:20,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:20,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25] total 41 [2019-09-07 11:44:20,414 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-07 11:44:20,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-07 11:44:20,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2019-09-07 11:44:20,415 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 41 states. [2019-09-07 11:44:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:24,765 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2019-09-07 11:44:24,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-07 11:44:24,765 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 64 [2019-09-07 11:44:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:24,767 INFO L225 Difference]: With dead ends: 111 [2019-09-07 11:44:24,767 INFO L226 Difference]: Without dead ends: 80 [2019-09-07 11:44:24,769 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 34 SyntacticMatches, 14 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=845, Invalid=5475, Unknown=0, NotChecked=0, Total=6320 [2019-09-07 11:44:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-09-07 11:44:24,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2019-09-07 11:44:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-09-07 11:44:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2019-09-07 11:44:24,786 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 64 [2019-09-07 11:44:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:24,786 INFO L475 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2019-09-07 11:44:24,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-07 11:44:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2019-09-07 11:44:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-07 11:44:24,788 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:24,788 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:24,788 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:24,789 INFO L82 PathProgramCache]: Analyzing trace with hash -764331557, now seen corresponding path program 8 times [2019-09-07 11:44:24,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:24,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:24,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:24,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:44:24,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 52 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-07 11:44:25,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:25,512 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:25,522 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 11:44:25,563 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 11:44:25,564 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:44:25,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 49 conjunts are in the unsatisfiable core [2019-09-07 11:44:25,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:25,609 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:25,609 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:25,609 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:25,618 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:25,619 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:25,619 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-09-07 11:44:25,694 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:44:25,695 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:44:25,696 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:25,705 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:25,705 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:25,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:43 [2019-09-07 11:44:25,812 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:44:25,812 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:44:25,813 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:25,825 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:25,826 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:25,826 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:57 [2019-09-07 11:44:25,968 INFO L341 Elim1Store]: treesize reduction 430, result has 10.0 percent of original size [2019-09-07 11:44:25,969 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:44:25,970 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:25,985 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:25,985 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:25,986 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:71 [2019-09-07 11:44:26,231 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 31 [2019-09-07 11:44:26,231 INFO L341 Elim1Store]: treesize reduction 596, result has 9.1 percent of original size [2019-09-07 11:44:26,232 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 99 [2019-09-07 11:44:26,233 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:26,275 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:26,275 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:26,275 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2019-09-07 11:44:26,414 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,416 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,417 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,418 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,419 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,419 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,431 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,437 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,438 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,439 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,440 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,441 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,443 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,443 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,444 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,445 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,446 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,447 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,448 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,449 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,450 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:26,452 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:26,452 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 116 [2019-09-07 11:44:26,453 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:26,471 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:26,472 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:26,472 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:102 [2019-09-07 11:44:28,705 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,706 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,706 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,707 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,708 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,709 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,710 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,711 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,713 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,714 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,715 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,716 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,717 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,718 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,721 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,723 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,724 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,724 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,726 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,727 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,729 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 11:44:28,731 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:28,734 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:28,735 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 97 treesize of output 40 [2019-09-07 11:44:28,735 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:28,742 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:28,742 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:28,743 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:106, output treesize:7 [2019-09-07 11:44:28,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 31 proven. 104 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-09-07 11:44:28,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:28,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29] total 46 [2019-09-07 11:44:28,939 INFO L454 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-09-07 11:44:28,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-09-07 11:44:28,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1760, Unknown=0, NotChecked=0, Total=2070 [2019-09-07 11:44:28,941 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 46 states. [2019-09-07 11:44:30,444 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2019-09-07 11:44:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:33,633 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2019-09-07 11:44:33,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-07 11:44:33,634 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 74 [2019-09-07 11:44:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:33,636 INFO L225 Difference]: With dead ends: 125 [2019-09-07 11:44:33,636 INFO L226 Difference]: Without dead ends: 90 [2019-09-07 11:44:33,639 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 38 SyntacticMatches, 18 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2835 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1139, Invalid=6871, Unknown=0, NotChecked=0, Total=8010 [2019-09-07 11:44:33,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-09-07 11:44:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2019-09-07 11:44:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-09-07 11:44:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2019-09-07 11:44:33,660 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 74 [2019-09-07 11:44:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:33,660 INFO L475 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2019-09-07 11:44:33,661 INFO L476 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-09-07 11:44:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2019-09-07 11:44:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-07 11:44:33,662 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:33,662 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:33,663 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:33,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1600614701, now seen corresponding path program 9 times [2019-09-07 11:44:33,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:33,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:33,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:33,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:44:33,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 74 proven. 87 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 11:44:34,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:34,934 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:34,945 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-07 11:44:35,007 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-09-07 11:44:35,007 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:44:35,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 54 conjunts are in the unsatisfiable core [2019-09-07 11:44:35,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:35,046 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:35,047 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:35,047 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,054 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:35,055 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,055 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-09-07 11:44:35,146 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:44:35,146 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:44:35,147 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,154 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:35,154 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,155 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:43 [2019-09-07 11:44:35,296 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:44:35,297 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:44:35,297 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,309 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:35,310 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,310 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:57 [2019-09-07 11:44:35,504 INFO L341 Elim1Store]: treesize reduction 430, result has 10.0 percent of original size [2019-09-07 11:44:35,505 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:44:35,505 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,518 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:35,518 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,518 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:71 [2019-09-07 11:44:35,729 INFO L341 Elim1Store]: treesize reduction 596, result has 9.1 percent of original size [2019-09-07 11:44:35,729 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 99 [2019-09-07 11:44:35,730 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,748 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:35,749 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:35,749 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2019-09-07 11:44:36,014 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 36 [2019-09-07 11:44:36,015 INFO L341 Elim1Store]: treesize reduction 780, result has 8.5 percent of original size [2019-09-07 11:44:36,015 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 116 [2019-09-07 11:44:36,016 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:36,045 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:36,046 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:36,046 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:99 [2019-09-07 11:44:36,212 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,213 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,215 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,215 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,217 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,219 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,219 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,221 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,222 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,223 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,224 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,225 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,227 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,228 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,229 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,230 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,232 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,233 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,234 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,235 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,236 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,237 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,238 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,239 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,240 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,242 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,243 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:36,245 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:36,245 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 124 treesize of output 133 [2019-09-07 11:44:36,246 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:36,276 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:36,276 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:36,277 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:116 [2019-09-07 11:44:39,211 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,212 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,213 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,215 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,216 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,219 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,220 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,221 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,222 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,223 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,224 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,225 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,226 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,227 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,228 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,230 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,231 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,232 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,233 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,234 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,235 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,236 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,238 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,239 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,240 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,241 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,242 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,243 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,244 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,246 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 11:44:39,248 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,248 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:39,250 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:39,250 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 110 treesize of output 45 [2019-09-07 11:44:39,251 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:39,256 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:39,257 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:39,257 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:119, output treesize:7 [2019-09-07 11:44:39,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 61 proven. 118 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 11:44:39,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:39,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 32] total 54 [2019-09-07 11:44:39,485 INFO L454 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-09-07 11:44:39,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-09-07 11:44:39,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2429, Unknown=0, NotChecked=0, Total=2862 [2019-09-07 11:44:39,487 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 54 states. [2019-09-07 11:44:40,928 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-07 11:44:41,110 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-07 11:44:41,827 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2019-09-07 11:44:42,452 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 114 [2019-09-07 11:44:45,613 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 98 [2019-09-07 11:44:46,030 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 100 [2019-09-07 11:44:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:44:46,045 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2019-09-07 11:44:46,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-09-07 11:44:46,046 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 84 [2019-09-07 11:44:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:44:46,047 INFO L225 Difference]: With dead ends: 138 [2019-09-07 11:44:46,048 INFO L226 Difference]: Without dead ends: 99 [2019-09-07 11:44:46,053 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 43 SyntacticMatches, 19 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3351 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1624, Invalid=8882, Unknown=0, NotChecked=0, Total=10506 [2019-09-07 11:44:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-09-07 11:44:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2019-09-07 11:44:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-09-07 11:44:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2019-09-07 11:44:46,077 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 84 [2019-09-07 11:44:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:44:46,077 INFO L475 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2019-09-07 11:44:46,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 54 states. [2019-09-07 11:44:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2019-09-07 11:44:46,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-07 11:44:46,079 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:44:46,079 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:44:46,080 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:44:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:44:46,080 INFO L82 PathProgramCache]: Analyzing trace with hash 523550975, now seen corresponding path program 10 times [2019-09-07 11:44:46,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:44:46,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:44:46,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:46,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:44:46,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:44:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:44:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 100 proven. 108 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-09-07 11:44:47,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:44:47,640 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:44:47,662 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-07 11:44:47,707 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 11:44:47,707 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:44:47,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 55 conjunts are in the unsatisfiable core [2019-09-07 11:44:47,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:44:47,725 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:44:47,725 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:44:47,726 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:47,730 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:47,730 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:47,730 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:26 [2019-09-07 11:44:47,827 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:44:47,828 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:44:47,828 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:47,835 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:47,835 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:47,836 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:40 [2019-09-07 11:44:47,963 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:44:47,963 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:44:47,964 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:47,973 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:47,973 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:47,974 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:54 [2019-09-07 11:44:48,177 INFO L341 Elim1Store]: treesize reduction 430, result has 10.0 percent of original size [2019-09-07 11:44:48,177 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:44:48,178 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:48,190 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:48,190 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:48,191 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:82, output treesize:68 [2019-09-07 11:44:48,402 INFO L341 Elim1Store]: treesize reduction 596, result has 9.1 percent of original size [2019-09-07 11:44:48,402 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 99 [2019-09-07 11:44:48,403 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:48,418 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:48,418 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:48,418 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:96, output treesize:82 [2019-09-07 11:44:48,706 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 36 [2019-09-07 11:44:48,707 INFO L341 Elim1Store]: treesize reduction 780, result has 8.5 percent of original size [2019-09-07 11:44:48,707 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 116 [2019-09-07 11:44:48,708 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:48,726 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:48,726 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:48,727 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:110, output treesize:96 [2019-09-07 11:44:49,070 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 41 [2019-09-07 11:44:49,071 INFO L341 Elim1Store]: treesize reduction 982, result has 7.9 percent of original size [2019-09-07 11:44:49,071 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 124 treesize of output 133 [2019-09-07 11:44:49,072 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:49,094 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:49,094 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:49,094 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:110 [2019-09-07 11:44:49,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:44:49,531 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 46 [2019-09-07 11:44:49,531 INFO L341 Elim1Store]: treesize reduction 1202, result has 7.4 percent of original size [2019-09-07 11:44:49,531 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 138 treesize of output 150 [2019-09-07 11:44:49,532 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:44:49,560 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:44:49,561 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:49,561 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:141, output treesize:127 [2019-09-07 11:44:56,112 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 70 [2019-09-07 11:44:56,112 INFO L341 Elim1Store]: treesize reduction 640, result has 19.3 percent of original size [2019-09-07 11:44:56,113 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 135 treesize of output 199 [2019-09-07 11:44:56,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,114 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,114 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,120 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-09-07 11:44:56,229 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 11 [2019-09-07 11:44:56,229 INFO L567 ElimStorePlain]: treesize reduction 911, result has 1.6 percent of original size [2019-09-07 11:44:56,230 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:44:56,230 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:144, output treesize:7 [2019-09-07 11:44:56,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:44:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 69 proven. 172 refuted. 13 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 11:44:56,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:44:56,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 35] total 59 [2019-09-07 11:44:56,535 INFO L454 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-09-07 11:44:56,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-09-07 11:44:56,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2960, Unknown=1, NotChecked=0, Total=3422 [2019-09-07 11:44:56,537 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 59 states. [2019-09-07 11:44:58,609 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2019-09-07 11:44:58,838 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-07 11:44:59,023 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-07 11:44:59,433 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 103 [2019-09-07 11:44:59,841 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2019-09-07 11:45:00,903 WARN L188 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 135 [2019-09-07 11:45:04,108 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-07 11:45:04,294 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-07 11:45:06,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:45:06,431 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2019-09-07 11:45:06,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2019-09-07 11:45:06,432 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 94 [2019-09-07 11:45:06,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:45:06,434 INFO L225 Difference]: With dead ends: 152 [2019-09-07 11:45:06,434 INFO L226 Difference]: Without dead ends: 109 [2019-09-07 11:45:06,439 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 49 SyntacticMatches, 21 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3965 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=1843, Invalid=10812, Unknown=1, NotChecked=0, Total=12656 [2019-09-07 11:45:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-09-07 11:45:06,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2019-09-07 11:45:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-09-07 11:45:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2019-09-07 11:45:06,470 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 94 [2019-09-07 11:45:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:45:06,470 INFO L475 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2019-09-07 11:45:06,470 INFO L476 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-09-07 11:45:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2019-09-07 11:45:06,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-07 11:45:06,472 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:45:06,472 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:45:06,472 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:45:06,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:45:06,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1672317265, now seen corresponding path program 11 times [2019-09-07 11:45:06,473 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:45:06,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:45:06,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:45:06,474 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:45:06,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:45:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:45:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 130 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-09-07 11:45:07,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:45:07,343 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:45:07,356 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-07 11:45:07,477 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-09-07 11:45:07,477 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:45:07,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 64 conjunts are in the unsatisfiable core [2019-09-07 11:45:07,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:45:07,513 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:45:07,514 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:45:07,514 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:07,520 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:07,521 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:07,521 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-09-07 11:45:07,603 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:45:07,604 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:45:07,604 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:07,612 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:07,613 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:07,613 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:43 [2019-09-07 11:45:07,723 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:45:07,724 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:45:07,724 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:07,736 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:07,736 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:07,736 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:57 [2019-09-07 11:45:07,893 INFO L341 Elim1Store]: treesize reduction 430, result has 10.0 percent of original size [2019-09-07 11:45:07,893 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:45:07,894 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:07,910 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:07,911 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:07,911 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:71 [2019-09-07 11:45:08,108 INFO L341 Elim1Store]: treesize reduction 596, result has 9.1 percent of original size [2019-09-07 11:45:08,108 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 99 [2019-09-07 11:45:08,109 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:08,126 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:08,126 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:08,126 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2019-09-07 11:45:08,394 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 36 [2019-09-07 11:45:08,395 INFO L341 Elim1Store]: treesize reduction 780, result has 8.5 percent of original size [2019-09-07 11:45:08,395 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 116 [2019-09-07 11:45:08,395 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:08,415 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:08,415 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:08,416 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:99 [2019-09-07 11:45:08,747 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 41 [2019-09-07 11:45:08,748 INFO L341 Elim1Store]: treesize reduction 982, result has 7.9 percent of original size [2019-09-07 11:45:08,748 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 124 treesize of output 133 [2019-09-07 11:45:08,749 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:08,775 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:08,775 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:08,776 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:127, output treesize:113 [2019-09-07 11:45:09,187 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 46 [2019-09-07 11:45:09,188 INFO L341 Elim1Store]: treesize reduction 1202, result has 7.4 percent of original size [2019-09-07 11:45:09,189 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 138 treesize of output 150 [2019-09-07 11:45:09,189 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:09,216 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:09,216 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:09,217 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:141, output treesize:127 [2019-09-07 11:45:09,435 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,437 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,438 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,440 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,441 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,442 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,443 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,444 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,445 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,446 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,447 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,448 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,450 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,452 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,453 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,454 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,455 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,456 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,457 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,458 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,459 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,459 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,460 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,461 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,462 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,463 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,464 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,466 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,466 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,467 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,468 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,470 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,471 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,473 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,474 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,475 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,477 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,478 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,480 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,481 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,482 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,484 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,485 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,490 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,491 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:09,493 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:09,493 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 46 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 152 treesize of output 167 [2019-09-07 11:45:09,494 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:09,544 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:09,544 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:09,545 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:158, output treesize:144 [2019-09-07 11:45:13,733 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,735 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,745 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,747 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,748 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,752 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,757 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,758 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,759 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,760 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,761 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 11:45:13,763 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,767 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,768 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,769 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,770 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,771 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,772 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,774 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,775 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,777 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,778 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,779 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:13,782 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:13,783 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 136 treesize of output 55 [2019-09-07 11:45:13,784 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:13,790 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:13,790 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:13,790 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:145, output treesize:7 [2019-09-07 11:45:13,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:45:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 76 proven. 209 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-07 11:45:14,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:45:14,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 38] total 57 [2019-09-07 11:45:14,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 57 states [2019-09-07 11:45:14,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2019-09-07 11:45:14,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2733, Unknown=0, NotChecked=0, Total=3192 [2019-09-07 11:45:14,117 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 57 states. [2019-09-07 11:45:17,017 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2019-09-07 11:45:20,810 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-07 11:45:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:45:22,522 INFO L93 Difference]: Finished difference Result 167 states and 180 transitions. [2019-09-07 11:45:22,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-09-07 11:45:22,523 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 104 [2019-09-07 11:45:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:45:22,525 INFO L225 Difference]: With dead ends: 167 [2019-09-07 11:45:22,525 INFO L226 Difference]: Without dead ends: 120 [2019-09-07 11:45:22,528 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 53 SyntacticMatches, 31 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4844 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=1771, Invalid=11801, Unknown=0, NotChecked=0, Total=13572 [2019-09-07 11:45:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-09-07 11:45:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2019-09-07 11:45:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-09-07 11:45:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2019-09-07 11:45:22,555 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 104 [2019-09-07 11:45:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:45:22,555 INFO L475 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2019-09-07 11:45:22,555 INFO L476 AbstractCegarLoop]: Interpolant automaton has 57 states. [2019-09-07 11:45:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2019-09-07 11:45:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-07 11:45:22,556 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:45:22,557 INFO L399 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:45:22,557 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:45:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:45:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2142120483, now seen corresponding path program 12 times [2019-09-07 11:45:22,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:45:22,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:45:22,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:45:22,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:45:22,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:45:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:45:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 164 proven. 156 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-09-07 11:45:24,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:45:24,475 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:45:24,486 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-07 11:45:24,813 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-09-07 11:45:24,813 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:45:24,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 70 conjunts are in the unsatisfiable core [2019-09-07 11:45:24,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:45:24,849 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:45:24,849 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:45:24,850 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:24,856 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:24,856 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:24,856 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-09-07 11:45:24,961 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:45:24,962 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:45:24,962 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:24,972 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:24,973 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:24,973 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:43 [2019-09-07 11:45:25,109 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:45:25,109 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:45:25,110 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:25,123 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:25,124 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:25,124 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:57 [2019-09-07 11:45:25,310 INFO L341 Elim1Store]: treesize reduction 430, result has 10.0 percent of original size [2019-09-07 11:45:25,310 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:45:25,311 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:25,326 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:25,326 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:25,326 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:71 [2019-09-07 11:45:25,558 INFO L341 Elim1Store]: treesize reduction 596, result has 9.1 percent of original size [2019-09-07 11:45:25,558 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 99 [2019-09-07 11:45:25,559 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:25,577 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:25,578 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:25,578 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2019-09-07 11:45:25,869 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 36 [2019-09-07 11:45:25,870 INFO L341 Elim1Store]: treesize reduction 780, result has 8.5 percent of original size [2019-09-07 11:45:25,870 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 116 [2019-09-07 11:45:25,871 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:25,891 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:25,892 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:25,892 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:99 [2019-09-07 11:45:26,254 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 41 [2019-09-07 11:45:26,254 INFO L341 Elim1Store]: treesize reduction 982, result has 7.9 percent of original size [2019-09-07 11:45:26,255 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 124 treesize of output 133 [2019-09-07 11:45:26,256 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:26,279 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:26,279 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:26,280 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:127, output treesize:113 [2019-09-07 11:45:26,715 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 46 [2019-09-07 11:45:26,715 INFO L341 Elim1Store]: treesize reduction 1202, result has 7.4 percent of original size [2019-09-07 11:45:26,716 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 138 treesize of output 150 [2019-09-07 11:45:26,716 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:26,745 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:26,745 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:26,746 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:141, output treesize:127 [2019-09-07 11:45:27,252 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 51 [2019-09-07 11:45:27,253 INFO L341 Elim1Store]: treesize reduction 1440, result has 7.0 percent of original size [2019-09-07 11:45:27,253 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 152 treesize of output 167 [2019-09-07 11:45:27,254 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:27,284 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:27,284 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:27,284 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:155, output treesize:141 [2019-09-07 11:45:27,543 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,544 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,546 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,547 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,547 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,551 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,552 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,553 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,553 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,554 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,556 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,557 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,558 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,559 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,560 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,561 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,563 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,566 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,567 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,568 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,570 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,572 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,573 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,574 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,575 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,576 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,578 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,579 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,580 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,581 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,582 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,583 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,585 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,586 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,588 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,589 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,590 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,591 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,593 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,597 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,598 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,599 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,600 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,601 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,604 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,605 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,606 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,607 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,608 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:27,609 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:27,610 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 56 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 166 treesize of output 184 [2019-09-07 11:45:27,611 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:27,650 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:27,651 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:27,651 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:172, output treesize:158 [2019-09-07 11:45:34,038 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,039 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,039 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,040 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,041 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,041 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,042 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,043 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,044 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,045 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,046 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,047 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,048 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,049 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,050 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,051 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,052 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,055 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,056 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,057 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,058 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,059 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,060 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,061 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,062 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,064 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,065 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,066 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,067 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,068 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,069 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,070 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,072 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,073 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,074 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,076 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,077 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,078 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,080 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,081 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,082 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,083 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,084 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,085 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,086 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,088 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,089 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,090 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,091 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,092 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 11:45:34,093 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,094 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,095 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,097 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,098 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,099 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,100 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,101 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,102 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:34,104 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:34,104 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 55 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 149 treesize of output 60 [2019-09-07 11:45:34,105 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:34,111 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:34,112 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:34,112 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:158, output treesize:7 [2019-09-07 11:45:34,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:45:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 94 proven. 253 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 11:45:34,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:45:34,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 42] total 70 [2019-09-07 11:45:34,528 INFO L454 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-09-07 11:45:34,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-09-07 11:45:34,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=4059, Unknown=0, NotChecked=0, Total=4830 [2019-09-07 11:45:34,529 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 70 states. [2019-09-07 11:45:36,961 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2019-09-07 11:45:37,220 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2019-09-07 11:45:37,428 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2019-09-07 11:45:37,849 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 123 [2019-09-07 11:45:38,285 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 122 [2019-09-07 11:45:39,276 WARN L188 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 152 [2019-09-07 11:45:42,910 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-09-07 11:45:43,082 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2019-09-07 11:45:44,670 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 119 [2019-09-07 11:45:45,290 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 121 [2019-09-07 11:45:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:45:45,305 INFO L93 Difference]: Finished difference Result 180 states and 194 transitions. [2019-09-07 11:45:45,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2019-09-07 11:45:45,306 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 114 [2019-09-07 11:45:45,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:45:45,308 INFO L225 Difference]: With dead ends: 180 [2019-09-07 11:45:45,308 INFO L226 Difference]: Without dead ends: 129 [2019-09-07 11:45:45,310 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 57 SyntacticMatches, 28 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5847 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=2676, Invalid=14880, Unknown=0, NotChecked=0, Total=17556 [2019-09-07 11:45:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-09-07 11:45:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2019-09-07 11:45:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-09-07 11:45:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2019-09-07 11:45:45,344 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 114 [2019-09-07 11:45:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:45:45,344 INFO L475 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2019-09-07 11:45:45,344 INFO L476 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-09-07 11:45:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2019-09-07 11:45:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-07 11:45:45,346 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:45:45,346 INFO L399 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:45:45,346 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:45:45,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:45:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash 488309621, now seen corresponding path program 13 times [2019-09-07 11:45:45,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:45:45,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:45:45,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:45:45,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:45:45,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:45:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:45:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 202 proven. 183 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-09-07 11:45:47,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:45:47,674 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:45:47,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:45:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:45:47,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 70 conjunts are in the unsatisfiable core [2019-09-07 11:45:47,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:45:47,747 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:45:47,747 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:45:47,747 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:47,753 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:47,753 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:47,753 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:26 [2019-09-07 11:45:47,886 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:45:47,887 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:45:47,888 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:47,894 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:47,894 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:47,895 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:40 [2019-09-07 11:45:48,032 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:45:48,032 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:45:48,033 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:48,041 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:48,042 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:48,042 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:54 [2019-09-07 11:45:48,227 INFO L341 Elim1Store]: treesize reduction 430, result has 10.0 percent of original size [2019-09-07 11:45:48,228 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:45:48,229 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:48,241 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:48,242 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:48,242 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:82, output treesize:68 [2019-09-07 11:45:48,475 INFO L341 Elim1Store]: treesize reduction 596, result has 9.1 percent of original size [2019-09-07 11:45:48,476 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 99 [2019-09-07 11:45:48,476 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:48,494 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:48,494 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:48,494 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:96, output treesize:82 [2019-09-07 11:45:48,792 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 36 [2019-09-07 11:45:48,792 INFO L341 Elim1Store]: treesize reduction 780, result has 8.5 percent of original size [2019-09-07 11:45:48,793 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 116 [2019-09-07 11:45:48,793 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:48,811 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:48,811 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:48,812 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:110, output treesize:96 [2019-09-07 11:45:49,171 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 41 [2019-09-07 11:45:49,172 INFO L341 Elim1Store]: treesize reduction 982, result has 7.9 percent of original size [2019-09-07 11:45:49,172 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 124 treesize of output 133 [2019-09-07 11:45:49,174 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:49,197 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:49,197 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:49,198 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:110 [2019-09-07 11:45:49,648 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 46 [2019-09-07 11:45:49,649 INFO L341 Elim1Store]: treesize reduction 1202, result has 7.4 percent of original size [2019-09-07 11:45:49,649 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 138 treesize of output 150 [2019-09-07 11:45:49,650 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:49,674 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:49,674 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:49,675 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:138, output treesize:124 [2019-09-07 11:45:50,232 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 51 [2019-09-07 11:45:50,232 INFO L341 Elim1Store]: treesize reduction 1440, result has 7.0 percent of original size [2019-09-07 11:45:50,233 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 152 treesize of output 167 [2019-09-07 11:45:50,234 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:50,262 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:50,262 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:50,263 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:152, output treesize:138 [2019-09-07 11:45:50,912 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 56 [2019-09-07 11:45:50,912 INFO L341 Elim1Store]: treesize reduction 1696, result has 6.6 percent of original size [2019-09-07 11:45:50,913 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 166 treesize of output 184 [2019-09-07 11:45:50,914 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:50,948 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:50,948 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:50,948 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:166, output treesize:152 [2019-09-07 11:45:51,287 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:45:51,761 WARN L188 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 61 [2019-09-07 11:45:51,761 INFO L341 Elim1Store]: treesize reduction 1970, result has 6.3 percent of original size [2019-09-07 11:45:51,762 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 201 [2019-09-07 11:45:51,763 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:45:51,799 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:45:51,799 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:45:51,799 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:183, output treesize:169 [2019-09-07 11:46:01,031 WARN L188 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 91 [2019-09-07 11:46:01,031 INFO L341 Elim1Store]: treesize reduction 1177, result has 14.8 percent of original size [2019-09-07 11:46:01,032 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 177 treesize of output 265 [2019-09-07 11:46:01,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,046 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-09-07 11:46:01,115 INFO L567 ElimStorePlain]: treesize reduction 1605, result has 0.9 percent of original size [2019-09-07 11:46:01,116 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:01,116 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:186, output treesize:7 [2019-09-07 11:46:01,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 111 proven. 304 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2019-09-07 11:46:01,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:46:01,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 43] total 73 [2019-09-07 11:46:01,663 INFO L454 AbstractCegarLoop]: Interpolant automaton has 73 states [2019-09-07 11:46:01,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2019-09-07 11:46:01,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=4540, Unknown=0, NotChecked=0, Total=5256 [2019-09-07 11:46:01,664 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 73 states. [2019-09-07 11:46:02,826 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2019-09-07 11:46:03,187 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-07 11:46:03,583 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2019-09-07 11:46:03,774 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-09-07 11:46:04,027 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2019-09-07 11:46:04,233 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 11:46:04,541 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2019-09-07 11:46:04,765 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2019-09-07 11:46:05,074 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2019-09-07 11:46:05,370 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2019-09-07 11:46:05,672 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2019-09-07 11:46:05,904 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2019-09-07 11:46:06,133 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2019-09-07 11:46:06,470 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 131 [2019-09-07 11:46:07,198 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 131 [2019-09-07 11:46:08,765 WARN L188 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 242 DAG size of output: 168 [2019-09-07 11:46:13,462 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 88 [2019-09-07 11:46:13,632 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 90 [2019-09-07 11:46:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:46:16,595 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2019-09-07 11:46:16,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2019-09-07 11:46:16,596 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 124 [2019-09-07 11:46:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:46:16,597 INFO L225 Difference]: With dead ends: 194 [2019-09-07 11:46:16,598 INFO L226 Difference]: Without dead ends: 139 [2019-09-07 11:46:16,602 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 64 SyntacticMatches, 31 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=2833, Invalid=17189, Unknown=0, NotChecked=0, Total=20022 [2019-09-07 11:46:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-07 11:46:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2019-09-07 11:46:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-09-07 11:46:16,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2019-09-07 11:46:16,642 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 124 [2019-09-07 11:46:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:46:16,642 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2019-09-07 11:46:16,642 INFO L476 AbstractCegarLoop]: Interpolant automaton has 73 states. [2019-09-07 11:46:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2019-09-07 11:46:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-07 11:46:16,643 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:46:16,643 INFO L399 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:46:16,643 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:46:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:46:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash 316699975, now seen corresponding path program 14 times [2019-09-07 11:46:16,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:46:16,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:46:16,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:46:16,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 11:46:16,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:46:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:46:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 244 proven. 212 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2019-09-07 11:46:18,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:46:18,577 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:46:18,588 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 11:46:18,643 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 11:46:18,643 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:46:18,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 79 conjunts are in the unsatisfiable core [2019-09-07 11:46:18,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:46:18,684 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:46:18,685 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 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:46:18,685 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:18,690 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:18,691 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:18,691 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:29 [2019-09-07 11:46:18,789 INFO L341 Elim1Store]: treesize reduction 152, result has 13.6 percent of original size [2019-09-07 11:46:18,790 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2019-09-07 11:46:18,790 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:18,800 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:18,801 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:18,801 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:43 [2019-09-07 11:46:18,925 INFO L341 Elim1Store]: treesize reduction 282, result has 11.3 percent of original size [2019-09-07 11:46:18,926 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 65 [2019-09-07 11:46:18,927 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:18,938 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:18,938 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:18,938 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:57 [2019-09-07 11:46:19,087 INFO L341 Elim1Store]: treesize reduction 430, result has 10.0 percent of original size [2019-09-07 11:46:19,087 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 82 [2019-09-07 11:46:19,088 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:19,101 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:19,102 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:19,102 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:71 [2019-09-07 11:46:19,304 INFO L341 Elim1Store]: treesize reduction 596, result has 9.1 percent of original size [2019-09-07 11:46:19,304 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 99 [2019-09-07 11:46:19,305 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:19,322 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:19,323 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:19,323 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2019-09-07 11:46:19,588 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 36 [2019-09-07 11:46:19,589 INFO L341 Elim1Store]: treesize reduction 780, result has 8.5 percent of original size [2019-09-07 11:46:19,589 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 110 treesize of output 116 [2019-09-07 11:46:19,590 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:19,613 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:19,613 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:19,614 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:99 [2019-09-07 11:46:19,940 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 41 [2019-09-07 11:46:19,940 INFO L341 Elim1Store]: treesize reduction 982, result has 7.9 percent of original size [2019-09-07 11:46:19,940 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 124 treesize of output 133 [2019-09-07 11:46:19,941 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:19,967 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:19,967 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:19,968 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:127, output treesize:113 [2019-09-07 11:46:20,373 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 46 [2019-09-07 11:46:20,374 INFO L341 Elim1Store]: treesize reduction 1202, result has 7.4 percent of original size [2019-09-07 11:46:20,374 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 138 treesize of output 150 [2019-09-07 11:46:20,375 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:20,415 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:20,415 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:20,415 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:141, output treesize:127 [2019-09-07 11:46:20,922 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 51 [2019-09-07 11:46:20,923 INFO L341 Elim1Store]: treesize reduction 1440, result has 7.0 percent of original size [2019-09-07 11:46:20,923 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 152 treesize of output 167 [2019-09-07 11:46:20,924 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:20,959 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:20,960 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:20,960 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:155, output treesize:141 [2019-09-07 11:46:21,591 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 56 [2019-09-07 11:46:21,591 INFO L341 Elim1Store]: treesize reduction 1696, result has 6.6 percent of original size [2019-09-07 11:46:21,592 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 166 treesize of output 184 [2019-09-07 11:46:21,593 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:21,630 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:21,630 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:21,631 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:169, output treesize:155 [2019-09-07 11:46:22,389 WARN L188 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 61 [2019-09-07 11:46:22,390 INFO L341 Elim1Store]: treesize reduction 1970, result has 6.3 percent of original size [2019-09-07 11:46:22,391 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 180 treesize of output 201 [2019-09-07 11:46:22,392 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:22,435 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:22,435 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:22,435 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:183, output treesize:169 [2019-09-07 11:46:22,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,735 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,737 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,744 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,745 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,747 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,748 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,752 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,754 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,755 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,757 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,759 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,760 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,761 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,762 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,763 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,767 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,768 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,770 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,771 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,772 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,774 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,775 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,777 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,778 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,782 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,783 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,784 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,785 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,786 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,787 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,788 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,789 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,790 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,792 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,793 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,794 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,795 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,796 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,797 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,798 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,799 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,800 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,801 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,803 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,804 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,805 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,806 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,807 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,808 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,809 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,810 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,811 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,812 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,814 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,816 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,817 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:22,820 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:22,821 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 79 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 194 treesize of output 218 [2019-09-07 11:46:22,822 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:22,874 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:22,874 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:22,875 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:200, output treesize:186 [2019-09-07 11:46:30,486 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,487 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,488 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,489 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,490 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,492 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,493 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,495 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,497 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,498 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,499 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,500 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,501 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,502 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,503 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,505 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,506 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,507 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,508 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,509 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,510 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,513 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,514 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,515 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,516 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,516 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,517 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,518 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,518 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,519 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,521 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,522 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,523 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,524 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,525 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,526 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,527 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,529 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,531 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,532 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,533 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,534 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,535 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,537 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,539 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,540 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,541 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,543 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,544 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,545 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,547 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,547 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,548 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,549 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,550 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,551 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,552 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,553 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,554 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,556 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,557 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,558 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,559 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,561 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,561 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 11:46:30,563 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,566 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,567 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,568 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,570 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,571 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,572 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,573 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,574 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,575 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,578 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:30,579 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:30,580 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 78 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 175 treesize of output 70 [2019-09-07 11:46:30,581 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:30,587 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:30,588 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:30,588 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:184, output treesize:7 [2019-09-07 11:46:30,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 11:46:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 133 proven. 356 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2019-09-07 11:46:31,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 11:46:31,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 47] total 77 [2019-09-07 11:46:31,157 INFO L454 AbstractCegarLoop]: Interpolant automaton has 77 states [2019-09-07 11:46:31,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2019-09-07 11:46:31,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=4923, Unknown=0, NotChecked=0, Total=5852 [2019-09-07 11:46:31,158 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 77 states. [2019-09-07 11:46:34,518 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2019-09-07 11:46:34,780 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2019-09-07 11:46:35,040 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2019-09-07 11:46:35,395 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 140 [2019-09-07 11:46:35,965 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 141 [2019-09-07 11:46:36,719 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 152 [2019-09-07 11:46:41,512 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 94 [2019-09-07 11:46:41,712 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 96 [2019-09-07 11:46:43,945 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 102 [2019-09-07 11:46:44,457 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2019-09-07 11:46:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 11:46:44,468 INFO L93 Difference]: Finished difference Result 208 states and 224 transitions. [2019-09-07 11:46:44,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2019-09-07 11:46:44,469 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 134 [2019-09-07 11:46:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 11:46:44,471 INFO L225 Difference]: With dead ends: 208 [2019-09-07 11:46:44,471 INFO L226 Difference]: Without dead ends: 149 [2019-09-07 11:46:44,474 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 68 SyntacticMatches, 36 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9239 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=3138, Invalid=19512, Unknown=0, NotChecked=0, Total=22650 [2019-09-07 11:46:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-07 11:46:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2019-09-07 11:46:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-07 11:46:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2019-09-07 11:46:44,533 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 134 [2019-09-07 11:46:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 11:46:44,533 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2019-09-07 11:46:44,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 77 states. [2019-09-07 11:46:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2019-09-07 11:46:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-07 11:46:44,534 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 11:46:44,535 INFO L399 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 11:46:44,535 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 11:46:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 11:46:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1158488167, now seen corresponding path program 15 times [2019-09-07 11:46:44,535 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 11:46:44,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 11:46:44,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:46:44,536 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 11:46:44,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 11:46:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 11:46:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 290 proven. 243 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2019-09-07 11:46:45,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 11:46:45,737 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:46:45,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-07 11:46:46,776 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2019-09-07 11:46:46,776 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 11:46:46,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 60 conjunts are in the unsatisfiable core [2019-09-07 11:46:46,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 11:46:46,788 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:46,795 INFO L341 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2019-09-07 11:46:46,795 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2019-09-07 11:46:46,796 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:46,802 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 11:46:46,802 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 11:46:46,803 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:31 [2019-09-07 11:46:46,845 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:46,934 INFO L341 Elim1Store]: treesize reduction 132, result has 51.6 percent of original size [2019-09-07 11:46:46,935 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 163 [2019-09-07 11:46:46,936 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:46,987 INFO L567 ElimStorePlain]: treesize reduction 106, result has 36.5 percent of original size [2019-09-07 11:46:46,988 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-07 11:46:46,988 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:61 [2019-09-07 11:46:47,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:47,194 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2019-09-07 11:46:47,194 INFO L341 Elim1Store]: treesize reduction 279, result has 40.3 percent of original size [2019-09-07 11:46:47,195 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 220 [2019-09-07 11:46:47,196 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:47,253 INFO L567 ElimStorePlain]: treesize reduction 147, result has 33.8 percent of original size [2019-09-07 11:46:47,254 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-07 11:46:47,254 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:89, output treesize:75 [2019-09-07 11:46:47,334 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:47,706 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 93 [2019-09-07 11:46:47,706 INFO L341 Elim1Store]: treesize reduction 298, result has 59.6 percent of original size [2019-09-07 11:46:47,707 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 90 treesize of output 475 [2019-09-07 11:46:47,708 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:47,835 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2019-09-07 11:46:47,836 INFO L567 ElimStorePlain]: treesize reduction 384, result has 21.5 percent of original size [2019-09-07 11:46:47,836 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-07 11:46:47,837 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:105, output treesize:105 [2019-09-07 11:46:47,947 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:48,779 WARN L188 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 155 [2019-09-07 11:46:48,780 INFO L341 Elim1Store]: treesize reduction 390, result has 65.5 percent of original size [2019-09-07 11:46:48,780 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 29 case distinctions, treesize of input 115 treesize of output 783 [2019-09-07 11:46:48,783 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:49,003 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 55 [2019-09-07 11:46:49,004 INFO L567 ElimStorePlain]: treesize reduction 683, result has 16.5 percent of original size [2019-09-07 11:46:49,004 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-09-07 11:46:49,005 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:135, output treesize:135 [2019-09-07 11:46:49,163 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:50,780 WARN L188 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 289 DAG size of output: 233 [2019-09-07 11:46:50,781 INFO L341 Elim1Store]: treesize reduction 482, result has 69.7 percent of original size [2019-09-07 11:46:50,782 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 46 case distinctions, treesize of input 140 treesize of output 1159 [2019-09-07 11:46:50,786 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:51,158 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 65 [2019-09-07 11:46:51,158 INFO L567 ElimStorePlain]: treesize reduction 1058, result has 13.5 percent of original size [2019-09-07 11:46:51,159 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-09-07 11:46:51,160 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:165, output treesize:165 [2019-09-07 11:46:51,409 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:46:54,233 WARN L188 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 393 DAG size of output: 327 [2019-09-07 11:46:54,234 INFO L341 Elim1Store]: treesize reduction 574, result has 72.9 percent of original size [2019-09-07 11:46:54,234 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 67 case distinctions, treesize of input 165 treesize of output 1603 [2019-09-07 11:46:54,241 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:46:54,871 WARN L188 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 75 [2019-09-07 11:46:54,872 INFO L567 ElimStorePlain]: treesize reduction 1509, result has 11.4 percent of original size [2019-09-07 11:46:54,873 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-09-07 11:46:54,874 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:195, output treesize:195 [2019-09-07 11:46:55,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:47:00,488 WARN L188 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 513 DAG size of output: 437 [2019-09-07 11:47:00,489 INFO L341 Elim1Store]: treesize reduction 666, result has 75.5 percent of original size [2019-09-07 11:47:00,490 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 92 case distinctions, treesize of input 190 treesize of output 2115 [2019-09-07 11:47:00,500 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:47:01,418 WARN L188 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 85 [2019-09-07 11:47:01,418 INFO L567 ElimStorePlain]: treesize reduction 2036, result has 10.0 percent of original size [2019-09-07 11:47:01,420 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-09-07 11:47:01,420 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:225, output treesize:225 [2019-09-07 11:47:14,908 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 11:47:22,316 WARN L188 SmtUtils]: Spent 7.41 s on a formula simplification. DAG size of input: 649 DAG size of output: 563 [2019-09-07 11:47:22,317 INFO L341 Elim1Store]: treesize reduction 758, result has 77.6 percent of original size [2019-09-07 11:47:22,318 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 1 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 121 case distinctions, treesize of input 215 treesize of output 2695 [2019-09-07 11:47:22,331 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 11:47:23,666 WARN L188 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 569 DAG size of output: 95 [2019-09-07 11:47:23,666 INFO L567 ElimStorePlain]: treesize reduction 2639, result has 8.8 percent of original size [2019-09-07 11:47:23,667 INFO L496 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2019-09-07 11:47:23,667 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:255, output treesize:255 [2019-09-07 11:49:06,036 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-09-07 11:49:06,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 11:49:06,239 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:581) 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:232) 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:453) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1428) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:631) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 39 more [2019-09-07 11:49:06,245 INFO L168 Benchmark]: Toolchain (without parser) took 308059.17 ms. Allocated memory was 130.5 MB in the beginning and 235.4 MB in the end (delta: 104.9 MB). Free memory was 86.9 MB in the beginning and 156.2 MB in the end (delta: -69.3 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2019-09-07 11:49:06,245 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 130.5 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-07 11:49:06,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.25 ms. Allocated memory is still 130.5 MB. Free memory was 86.7 MB in the beginning and 76.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-07 11:49:06,246 INFO L168 Benchmark]: Boogie Preprocessor took 137.58 ms. Allocated memory was 130.5 MB in the beginning and 197.7 MB in the end (delta: 67.1 MB). Free memory was 76.9 MB in the beginning and 173.3 MB in the end (delta: -96.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-07 11:49:06,246 INFO L168 Benchmark]: RCFGBuilder took 335.60 ms. Allocated memory is still 197.7 MB. Free memory was 173.3 MB in the beginning and 159.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-09-07 11:49:06,246 INFO L168 Benchmark]: TraceAbstraction took 307328.25 ms. Allocated memory was 197.7 MB in the beginning and 235.4 MB in the end (delta: 37.7 MB). Free memory was 158.8 MB in the beginning and 156.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-09-07 11:49:06,247 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 130.5 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.25 ms. Allocated memory is still 130.5 MB. Free memory was 86.7 MB in the beginning and 76.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.58 ms. Allocated memory was 130.5 MB in the beginning and 197.7 MB in the end (delta: 67.1 MB). Free memory was 76.9 MB in the beginning and 173.3 MB in the end (delta: -96.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 335.60 ms. Allocated memory is still 197.7 MB. Free memory was 173.3 MB in the beginning and 159.5 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 307328.25 ms. Allocated memory was 197.7 MB in the beginning and 235.4 MB in the end (delta: 37.7 MB). Free memory was 158.8 MB in the beginning and 156.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...