/usr/bin/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/nr3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 18:52:33,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 18:52:33,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 18:52:33,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 18:52:33,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 18:52:33,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 18:52:33,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 18:52:33,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 18:52:33,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 18:52:33,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 18:52:33,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 18:52:33,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 18:52:33,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 18:52:33,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 18:52:33,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 18:52:33,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 18:52:33,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 18:52:33,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 18:52:33,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 18:52:33,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 18:52:33,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 18:52:33,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 18:52:33,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 18:52:33,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 18:52:33,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 18:52:33,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 18:52:33,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 18:52:33,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 18:52:33,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 18:52:33,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 18:52:33,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 18:52:33,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 18:52:33,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 18:52:33,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 18:52:33,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 18:52:33,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 18:52:33,163 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 [2019-11-06 18:52:33,188 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 18:52:33,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 18:52:33,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 18:52:33,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 18:52:33,190 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 18:52:33,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 18:52:33,190 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 18:52:33,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 18:52:33,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 18:52:33,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 18:52:33,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 18:52:33,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 18:52:33,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 18:52:33,192 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 18:52:33,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 18:52:33,192 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 18:52:33,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 18:52:33,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 18:52:33,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 18:52:33,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 18:52:33,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 18:52:33,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 18:52:33,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 18:52:33,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 18:52:33,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 18:52:33,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 18:52:33,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 18:52:33,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 18:52:33,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 18:52:33,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 18:52:33,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 18:52:33,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 18:52:33,523 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 18:52:33,524 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 18:52:33,524 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr3.c [2019-11-06 18:52:33,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b499798/69552d71c5a54fb3878344e7110b8250/FLAG4c7b4f27b [2019-11-06 18:52:34,089 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 18:52:34,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/nr3.c [2019-11-06 18:52:34,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b499798/69552d71c5a54fb3878344e7110b8250/FLAG4c7b4f27b [2019-11-06 18:52:34,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b499798/69552d71c5a54fb3878344e7110b8250 [2019-11-06 18:52:34,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 18:52:34,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 18:52:34,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 18:52:34,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 18:52:34,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 18:52:34,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fafc8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34, skipping insertion in model container [2019-11-06 18:52:34,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,531 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 18:52:34,552 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 18:52:34,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 18:52:34,744 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 18:52:34,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 18:52:34,873 INFO L192 MainTranslator]: Completed translation [2019-11-06 18:52:34,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34 WrapperNode [2019-11-06 18:52:34,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 18:52:34,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 18:52:34,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 18:52:34,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 18:52:34,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (1/1) ... [2019-11-06 18:52:34,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 18:52:34,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 18:52:34,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 18:52:34,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 18:52:34,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (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 [2019-11-06 18:52:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 18:52:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 18:52:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 18:52:34,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 18:52:34,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 18:52:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 18:52:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 18:52:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 18:52:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 18:52:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 18:52:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 18:52:34,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 18:52:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 18:52:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 18:52:34,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 18:52:35,240 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 18:52:35,241 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 18:52:35,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:52:35 BoogieIcfgContainer [2019-11-06 18:52:35,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 18:52:35,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 18:52:35,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 18:52:35,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 18:52:35,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:52:34" (1/3) ... [2019-11-06 18:52:35,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b38b348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:52:35, skipping insertion in model container [2019-11-06 18:52:35,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:52:34" (2/3) ... [2019-11-06 18:52:35,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b38b348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:52:35, skipping insertion in model container [2019-11-06 18:52:35,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:52:35" (3/3) ... [2019-11-06 18:52:35,264 INFO L109 eAbstractionObserver]: Analyzing ICFG nr3.c [2019-11-06 18:52:35,274 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 18:52:35,281 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 18:52:35,293 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 18:52:35,319 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 18:52:35,319 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 18:52:35,319 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 18:52:35,319 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 18:52:35,320 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 18:52:35,320 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 18:52:35,320 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 18:52:35,320 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 18:52:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-06 18:52:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 18:52:35,340 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:35,341 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:35,343 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1453831941, now seen corresponding path program 1 times [2019-11-06 18:52:35,354 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:35,355 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183496651] [2019-11-06 18:52:35,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:35,635 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183496651] [2019-11-06 18:52:35,636 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 18:52:35,636 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 18:52:35,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435766720] [2019-11-06 18:52:35,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 18:52:35,643 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:35,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 18:52:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 18:52:35,656 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 6 states. [2019-11-06 18:52:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:35,862 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2019-11-06 18:52:35,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 18:52:35,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-06 18:52:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:35,874 INFO L225 Difference]: With dead ends: 60 [2019-11-06 18:52:35,874 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 18:52:35,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-06 18:52:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 18:52:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-06 18:52:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-06 18:52:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-06 18:52:35,917 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2019-11-06 18:52:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:35,918 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-06 18:52:35,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 18:52:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-06 18:52:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 18:52:35,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:35,919 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:35,920 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:35,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1455678983, now seen corresponding path program 1 times [2019-11-06 18:52:35,921 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:35,921 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020029416] [2019-11-06 18:52:35,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:36,135 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020029416] [2019-11-06 18:52:36,135 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 18:52:36,135 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 18:52:36,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852389712] [2019-11-06 18:52:36,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 18:52:36,141 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:36,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 18:52:36,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 18:52:36,142 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2019-11-06 18:52:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:36,291 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2019-11-06 18:52:36,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 18:52:36,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-06 18:52:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:36,295 INFO L225 Difference]: With dead ends: 52 [2019-11-06 18:52:36,296 INFO L226 Difference]: Without dead ends: 35 [2019-11-06 18:52:36,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 18:52:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-06 18:52:36,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-06 18:52:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 18:52:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-06 18:52:36,306 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 16 [2019-11-06 18:52:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:36,306 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-06 18:52:36,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 18:52:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-06 18:52:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-06 18:52:36,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:36,308 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:36,308 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:36,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:36,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2089835012, now seen corresponding path program 1 times [2019-11-06 18:52:36,309 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:36,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364748883] [2019-11-06 18:52:36,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:36,373 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364748883] [2019-11-06 18:52:36,373 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 18:52:36,373 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 18:52:36,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888741681] [2019-11-06 18:52:36,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 18:52:36,374 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:36,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 18:52:36,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 18:52:36,375 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2019-11-06 18:52:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:36,468 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2019-11-06 18:52:36,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 18:52:36,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-11-06 18:52:36,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:36,470 INFO L225 Difference]: With dead ends: 56 [2019-11-06 18:52:36,470 INFO L226 Difference]: Without dead ends: 34 [2019-11-06 18:52:36,473 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 18:52:36,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-06 18:52:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-11-06 18:52:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 18:52:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-11-06 18:52:36,487 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2019-11-06 18:52:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:36,487 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-11-06 18:52:36,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 18:52:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-11-06 18:52:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 18:52:36,489 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:36,490 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:36,490 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:36,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1382648830, now seen corresponding path program 1 times [2019-11-06 18:52:36,491 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:36,491 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413756493] [2019-11-06 18:52:36,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:36,587 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413756493] [2019-11-06 18:52:36,588 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 18:52:36,588 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 18:52:36,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648037547] [2019-11-06 18:52:36,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 18:52:36,589 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:36,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 18:52:36,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 18:52:36,590 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2019-11-06 18:52:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:36,680 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2019-11-06 18:52:36,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 18:52:36,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-06 18:52:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:36,682 INFO L225 Difference]: With dead ends: 57 [2019-11-06 18:52:36,682 INFO L226 Difference]: Without dead ends: 34 [2019-11-06 18:52:36,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 18:52:36,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-06 18:52:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-11-06 18:52:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-06 18:52:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-06 18:52:36,691 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2019-11-06 18:52:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:36,691 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-06 18:52:36,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 18:52:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-06 18:52:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-06 18:52:36,692 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:36,693 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:36,693 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:36,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1124483392, now seen corresponding path program 1 times [2019-11-06 18:52:36,694 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:36,694 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498546719] [2019-11-06 18:52:36,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:36,761 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498546719] [2019-11-06 18:52:36,762 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047768855] [2019-11-06 18:52:36,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:36,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 18:52:36,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:52:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:36,876 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 18:52:36,876 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-06 18:52:36,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607546056] [2019-11-06 18:52:36,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 18:52:36,879 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:36,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 18:52:36,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 18:52:36,880 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2019-11-06 18:52:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:36,964 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-06 18:52:36,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 18:52:36,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-06 18:52:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:36,965 INFO L225 Difference]: With dead ends: 61 [2019-11-06 18:52:36,965 INFO L226 Difference]: Without dead ends: 37 [2019-11-06 18:52:36,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 18:52:36,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-06 18:52:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-11-06 18:52:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-06 18:52:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-11-06 18:52:36,973 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2019-11-06 18:52:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:36,974 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-11-06 18:52:36,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 18:52:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-11-06 18:52:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-06 18:52:36,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:36,975 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:37,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:37,181 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:37,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1448609222, now seen corresponding path program 1 times [2019-11-06 18:52:37,182 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:37,182 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660241134] [2019-11-06 18:52:37,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:37,265 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660241134] [2019-11-06 18:52:37,265 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568029810] [2019-11-06 18:52:37,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:37,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 18:52:37,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:52:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:37,374 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 18:52:37,375 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2019-11-06 18:52:37,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028153423] [2019-11-06 18:52:37,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 18:52:37,377 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:37,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 18:52:37,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-06 18:52:37,378 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2019-11-06 18:52:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:37,518 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2019-11-06 18:52:37,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 18:52:37,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-11-06 18:52:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:37,522 INFO L225 Difference]: With dead ends: 64 [2019-11-06 18:52:37,523 INFO L226 Difference]: Without dead ends: 38 [2019-11-06 18:52:37,524 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-11-06 18:52:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-06 18:52:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-11-06 18:52:37,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-06 18:52:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-06 18:52:37,539 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 25 [2019-11-06 18:52:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:37,539 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-06 18:52:37,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 18:52:37,539 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-11-06 18:52:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-06 18:52:37,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:37,543 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:37,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:37,744 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1706774660, now seen corresponding path program 2 times [2019-11-06 18:52:37,745 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:37,745 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093817996] [2019-11-06 18:52:37,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:37,825 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093817996] [2019-11-06 18:52:37,826 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922727672] [2019-11-06 18:52:37,826 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:37,887 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 18:52:37,887 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 18:52:37,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 18:52:37,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:52:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:37,901 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 18:52:37,901 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2019-11-06 18:52:37,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642052972] [2019-11-06 18:52:37,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 18:52:37,903 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:37,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 18:52:37,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 18:52:37,905 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2019-11-06 18:52:37,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:37,990 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2019-11-06 18:52:37,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 18:52:37,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-06 18:52:37,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:37,992 INFO L225 Difference]: With dead ends: 65 [2019-11-06 18:52:37,992 INFO L226 Difference]: Without dead ends: 38 [2019-11-06 18:52:37,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 18:52:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-06 18:52:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-06 18:52:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-06 18:52:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-11-06 18:52:38,001 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 25 [2019-11-06 18:52:38,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:38,002 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-11-06 18:52:38,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 18:52:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-11-06 18:52:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-06 18:52:38,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:38,003 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:38,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:38,208 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:38,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1405489790, now seen corresponding path program 2 times [2019-11-06 18:52:38,209 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:38,210 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458013570] [2019-11-06 18:52:38,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:38,812 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458013570] [2019-11-06 18:52:38,812 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680881438] [2019-11-06 18:52:38,812 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:38,853 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 18:52:38,853 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 18:52:38,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-06 18:52:38,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:52:38,930 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2019-11-06 18:52:38,930 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:38,947 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:38,948 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 18:52:38,948 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2019-11-06 18:52:39,022 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:52:39,023 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2019-11-06 18:52:39,024 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:39,038 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:39,040 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. [2019-11-06 18:52:39,040 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:77, output treesize:73 [2019-11-06 18:52:39,113 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:52:39,115 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:52:39,127 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:39,127 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 96 [2019-11-06 18:52:39,128 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:39,198 INFO L567 ElimStorePlain]: treesize reduction 27, result has 77.3 percent of original size [2019-11-06 18:52:39,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:39,203 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. [2019-11-06 18:52:39,204 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:82, output treesize:92 [2019-11-06 18:52:39,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:39,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:39,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:39,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:39,477 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:39,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:39,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:39,680 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 18:52:39,681 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 22 [2019-11-06 18:52:39,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988386463] [2019-11-06 18:52:39,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-06 18:52:39,682 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:39,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-06 18:52:39,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2019-11-06 18:52:39,683 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 22 states. [2019-11-06 18:52:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:41,370 INFO L93 Difference]: Finished difference Result 125 states and 155 transitions. [2019-11-06 18:52:41,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-06 18:52:41,376 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2019-11-06 18:52:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:41,379 INFO L225 Difference]: With dead ends: 125 [2019-11-06 18:52:41,379 INFO L226 Difference]: Without dead ends: 109 [2019-11-06 18:52:41,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2019-11-06 18:52:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-06 18:52:41,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 61. [2019-11-06 18:52:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-06 18:52:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2019-11-06 18:52:41,398 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 28 [2019-11-06 18:52:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:41,399 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2019-11-06 18:52:41,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-06 18:52:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2019-11-06 18:52:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 18:52:41,400 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:41,401 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:41,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:41,605 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:41,605 INFO L82 PathProgramCache]: Analyzing trace with hash 612803125, now seen corresponding path program 1 times [2019-11-06 18:52:41,605 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:41,605 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009236087] [2019-11-06 18:52:41,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:41,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009236087] [2019-11-06 18:52:41,801 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947487637] [2019-11-06 18:52:41,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:41,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-06 18:52:41,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:52:41,972 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-11-06 18:52:41,973 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:41,979 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:41,980 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 18:52:41,980 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-06 18:52:42,029 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:42,030 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 57 [2019-11-06 18:52:42,030 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:42,057 INFO L567 ElimStorePlain]: treesize reduction 21, result has 65.0 percent of original size [2019-11-06 18:52:42,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,059 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. [2019-11-06 18:52:42,059 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:39 [2019-11-06 18:52:42,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,526 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:42,709 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 18:52:42,709 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2019-11-06 18:52:42,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399904548] [2019-11-06 18:52:42,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-06 18:52:42,710 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 18:52:42,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-06 18:52:42,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-11-06 18:52:42,711 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 26 states. [2019-11-06 18:52:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 18:52:44,267 INFO L93 Difference]: Finished difference Result 152 states and 183 transitions. [2019-11-06 18:52:44,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-06 18:52:44,268 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 37 [2019-11-06 18:52:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 18:52:44,271 INFO L225 Difference]: With dead ends: 152 [2019-11-06 18:52:44,271 INFO L226 Difference]: Without dead ends: 136 [2019-11-06 18:52:44,276 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=343, Invalid=1913, Unknown=0, NotChecked=0, Total=2256 [2019-11-06 18:52:44,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-11-06 18:52:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 113. [2019-11-06 18:52:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-11-06 18:52:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2019-11-06 18:52:44,321 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 37 [2019-11-06 18:52:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 18:52:44,321 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2019-11-06 18:52:44,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-06 18:52:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2019-11-06 18:52:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-06 18:52:44,328 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 18:52:44,330 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 18:52:44,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:44,534 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 18:52:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 18:52:44,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1104036981, now seen corresponding path program 3 times [2019-11-06 18:52:44,534 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 18:52:44,534 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249028813] [2019-11-06 18:52:44,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 18:52:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 18:52:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 18:52:45,481 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249028813] [2019-11-06 18:52:45,481 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213422459] [2019-11-06 18:52:45,481 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 18:52:45,556 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-11-06 18:52:45,557 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 18:52:45,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-06 18:52:45,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 18:52:45,714 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2019-11-06 18:52:45,715 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:45,727 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:45,728 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 18:52:45,728 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2019-11-06 18:52:45,828 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:52:45,829 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2019-11-06 18:52:45,830 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:45,848 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:45,849 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. [2019-11-06 18:52:45,849 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:51, output treesize:47 [2019-11-06 18:52:45,920 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:52:45,947 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:45,948 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 36 treesize of output 105 [2019-11-06 18:52:45,950 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:46,005 INFO L567 ElimStorePlain]: treesize reduction 44, result has 62.1 percent of original size [2019-11-06 18:52:46,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,008 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. [2019-11-06 18:52:46,008 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:72 [2019-11-06 18:52:46,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 18:52:46,405 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:52:46,430 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:46,431 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 36 treesize of output 105 [2019-11-06 18:52:46,432 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:46,486 INFO L567 ElimStorePlain]: treesize reduction 56, result has 52.9 percent of original size [2019-11-06 18:52:46,487 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,487 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. [2019-11-06 18:52:46,488 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:63 [2019-11-06 18:52:46,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,695 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:52:46,740 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:46,740 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 2 case distinctions, treesize of input 57 treesize of output 134 [2019-11-06 18:52:46,741 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:46,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:52:46,821 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:52:46,822 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 223 [2019-11-06 18:52:46,823 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 18:52:46,980 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2019-11-06 18:52:46,981 INFO L567 ElimStorePlain]: treesize reduction 167, result has 48.1 percent of original size [2019-11-06 18:52:46,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:46,983 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 2 xjuncts. [2019-11-06 18:52:46,983 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:125, output treesize:155 [2019-11-06 18:52:46,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:47,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:47,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:47,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:47,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:47,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:47,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:52:47,114 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:20,443 WARN L191 SmtUtils]: Spent 33.23 s on a formula simplification that was a NOOP. DAG size: 62 [2019-11-06 18:53:20,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-11-06 18:53:20,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:53:20,699 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:53:20,700 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 238 [2019-11-06 18:53:20,701 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 18:53:20,716 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:53:20,815 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:53:20,815 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 242 [2019-11-06 18:53:20,817 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 18:53:20,831 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:53:20,835 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:53:20,866 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:53:20,867 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 98 [2019-11-06 18:53:20,868 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-06 18:53:20,880 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:53:21,055 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2019-11-06 18:53:21,055 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:53:21,056 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 9 case distinctions, treesize of input 86 treesize of output 351 [2019-11-06 18:53:21,058 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-06 18:53:21,069 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:53:21,076 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-06 18:53:21,126 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 18:53:21,127 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 187 [2019-11-06 18:53:21,128 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-06 18:53:21,679 WARN L191 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 103 [2019-11-06 18:53:21,679 INFO L567 ElimStorePlain]: treesize reduction 471, result has 55.3 percent of original size [2019-11-06 18:53:21,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:21,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:21,682 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:21,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:21,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:21,686 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 5 xjuncts. [2019-11-06 18:53:21,687 INFO L221 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:387, output treesize:545 [2019-11-06 18:53:21,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:21,688 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:21,688 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 18:53:21,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms