/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/rewnif.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:49:42,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:49:42,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:49:42,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:49:42,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:49:42,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:49:42,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:49:42,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:49:42,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:49:42,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:49:42,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:49:42,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:49:42,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:49:42,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:49:42,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:49:42,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:49:42,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:49:42,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:49:42,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:49:42,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:49:42,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:49:42,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:49:42,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:49:42,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:49:42,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:49:42,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:49:42,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:49:42,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:49:42,833 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 [2019-11-23 20:49:42,849 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:49:42,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:49:42,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:49:42,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:49:42,851 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:49:42,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:49:42,851 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:49:42,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:49:42,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:49:42,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:49:42,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:49:42,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:49:42,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:49:42,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:49:42,853 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:49:42,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:49:42,854 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:49:42,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:49:42,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:49:42,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:49:42,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:49:42,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:49:42,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:49:42,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:49:42,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:49:42,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:49:42,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:49:42,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:49:42,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:49:42,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:49:43,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:49:43,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:49:43,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:49:43,172 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:49:43,172 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:49:43,173 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnif.c [2019-11-23 20:49:43,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf957c1b/1bf8cdb281114a23bac91ae3235e73b9/FLAGb51dec0c2 [2019-11-23 20:49:43,721 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:49:43,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnif.c [2019-11-23 20:49:43,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf957c1b/1bf8cdb281114a23bac91ae3235e73b9/FLAGb51dec0c2 [2019-11-23 20:49:44,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bf957c1b/1bf8cdb281114a23bac91ae3235e73b9 [2019-11-23 20:49:44,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:49:44,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:49:44,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:49:44,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:49:44,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:49:44,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b57d1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44, skipping insertion in model container [2019-11-23 20:49:44,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:49:44,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:49:44,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:49:44,349 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:49:44,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:49:44,378 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:49:44,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44 WrapperNode [2019-11-23 20:49:44,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:49:44,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:49:44,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:49:44,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:49:44,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:49:44,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:49:44,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:49:44,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:49:44,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (1/1) ... [2019-11-23 20:49:44,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:49:44,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:49:44,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:49:44,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:49:44,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (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 [2019-11-23 20:49:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:49:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 20:49:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:49:44,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:49:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:49:44,804 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:49:44,804 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-23 20:49:44,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:49:44 BoogieIcfgContainer [2019-11-23 20:49:44,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:49:44,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:49:44,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:49:44,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:49:44,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:49:44" (1/3) ... [2019-11-23 20:49:44,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb4b4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:49:44, skipping insertion in model container [2019-11-23 20:49:44,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:49:44" (2/3) ... [2019-11-23 20:49:44,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb4b4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:49:44, skipping insertion in model container [2019-11-23 20:49:44,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:49:44" (3/3) ... [2019-11-23 20:49:44,831 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnif.c [2019-11-23 20:49:44,848 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:49:44,857 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 20:49:44,870 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 20:49:44,898 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:49:44,898 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:49:44,898 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:49:44,899 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:49:44,899 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:49:44,899 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:49:44,899 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:49:44,899 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:49:44,916 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-23 20:49:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 20:49:44,922 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:44,923 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:44,924 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:44,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:44,930 INFO L82 PathProgramCache]: Analyzing trace with hash 133671584, now seen corresponding path program 1 times [2019-11-23 20:49:44,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:44,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17620870] [2019-11-23 20:49:44,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:45,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17620870] [2019-11-23 20:49:45,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:49:45,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 20:49:45,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701883465] [2019-11-23 20:49:45,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 20:49:45,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:45,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 20:49:45,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 20:49:45,100 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-23 20:49:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:45,125 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2019-11-23 20:49:45,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 20:49:45,128 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-23 20:49:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:45,143 INFO L225 Difference]: With dead ends: 29 [2019-11-23 20:49:45,144 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 20:49:45,149 INFO L630 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 [2019-11-23 20:49:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 20:49:45,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 20:49:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 20:49:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-23 20:49:45,199 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2019-11-23 20:49:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:45,200 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-23 20:49:45,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 20:49:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-23 20:49:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 20:49:45,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:45,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:45,202 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:45,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:45,204 INFO L82 PathProgramCache]: Analyzing trace with hash 121665811, now seen corresponding path program 1 times [2019-11-23 20:49:45,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:45,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002781480] [2019-11-23 20:49:45,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:45,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002781480] [2019-11-23 20:49:45,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:49:45,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:49:45,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599280708] [2019-11-23 20:49:45,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:49:45,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:45,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:49:45,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:49:45,346 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-23 20:49:45,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:45,440 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-11-23 20:49:45,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:49:45,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 20:49:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:45,441 INFO L225 Difference]: With dead ends: 29 [2019-11-23 20:49:45,442 INFO L226 Difference]: Without dead ends: 18 [2019-11-23 20:49:45,443 INFO L630 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 [2019-11-23 20:49:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-23 20:49:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-23 20:49:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-23 20:49:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-23 20:49:45,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2019-11-23 20:49:45,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:45,452 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-23 20:49:45,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:49:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-23 20:49:45,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 20:49:45,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:45,454 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:45,455 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:45,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:45,456 INFO L82 PathProgramCache]: Analyzing trace with hash 729197006, now seen corresponding path program 1 times [2019-11-23 20:49:45,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:45,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749049907] [2019-11-23 20:49:45,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:45,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749049907] [2019-11-23 20:49:45,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:49:45,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:49:45,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432256128] [2019-11-23 20:49:45,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:49:45,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:45,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:49:45,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:49:45,537 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2019-11-23 20:49:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:45,586 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-11-23 20:49:45,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:49:45,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-23 20:49:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:45,588 INFO L225 Difference]: With dead ends: 26 [2019-11-23 20:49:45,588 INFO L226 Difference]: Without dead ends: 19 [2019-11-23 20:49:45,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:49:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-23 20:49:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-23 20:49:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 20:49:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-23 20:49:45,593 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2019-11-23 20:49:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:45,594 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-23 20:49:45,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:49:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-23 20:49:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-23 20:49:45,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:45,595 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:45,596 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1021157689, now seen corresponding path program 1 times [2019-11-23 20:49:45,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:45,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906346722] [2019-11-23 20:49:45,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:45,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906346722] [2019-11-23 20:49:45,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499264506] [2019-11-23 20:49:45,883 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 [2019-11-23 20:49:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:45,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-23 20:49:45,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:46,015 INFO L377 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 15 treesize of output 11 [2019-11-23 20:49:46,016 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:46,023 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:46,024 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:46,024 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-23 20:49:46,086 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:46,086 INFO L377 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 23 treesize of output 46 [2019-11-23 20:49:46,087 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:46,126 INFO L567 ElimStorePlain]: treesize reduction 24, result has 47.8 percent of original size [2019-11-23 20:49:46,128 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. [2019-11-23 20:49:46,128 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2019-11-23 20:49:46,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:49:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:46,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:46,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2019-11-23 20:49:46,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832830090] [2019-11-23 20:49:46,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 20:49:46,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:46,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 20:49:46,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-23 20:49:46,245 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 13 states. [2019-11-23 20:49:46,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:46,576 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-11-23 20:49:46,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-23 20:49:46,576 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-11-23 20:49:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:46,577 INFO L225 Difference]: With dead ends: 31 [2019-11-23 20:49:46,578 INFO L226 Difference]: Without dead ends: 29 [2019-11-23 20:49:46,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2019-11-23 20:49:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-23 20:49:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2019-11-23 20:49:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-23 20:49:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-23 20:49:46,591 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2019-11-23 20:49:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:46,591 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-23 20:49:46,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 20:49:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-23 20:49:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-23 20:49:46,593 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:46,593 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:46,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:46,794 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:46,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:46,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1566850755, now seen corresponding path program 1 times [2019-11-23 20:49:46,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:46,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621349168] [2019-11-23 20:49:46,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:47,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621349168] [2019-11-23 20:49:47,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769528807] [2019-11-23 20:49:47,210 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 [2019-11-23 20:49:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:47,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-23 20:49:47,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:47,298 INFO L377 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 13 treesize of output 9 [2019-11-23 20:49:47,298 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:47,305 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:47,306 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:47,306 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-11-23 20:49:47,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:49:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:47,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:47,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2019-11-23 20:49:47,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554145144] [2019-11-23 20:49:47,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-23 20:49:47,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:47,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-23 20:49:47,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-11-23 20:49:47,434 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 19 states. [2019-11-23 20:49:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:47,823 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2019-11-23 20:49:47,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-23 20:49:47,824 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 20 [2019-11-23 20:49:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:47,826 INFO L225 Difference]: With dead ends: 60 [2019-11-23 20:49:47,826 INFO L226 Difference]: Without dead ends: 58 [2019-11-23 20:49:47,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2019-11-23 20:49:47,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-23 20:49:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 37. [2019-11-23 20:49:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-23 20:49:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-11-23 20:49:47,841 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2019-11-23 20:49:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:47,846 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-11-23 20:49:47,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-23 20:49:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-11-23 20:49:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-23 20:49:47,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:47,848 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:48,053 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:48,053 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:48,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1995245389, now seen corresponding path program 2 times [2019-11-23 20:49:48,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:48,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35451335] [2019-11-23 20:49:48,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:48,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35451335] [2019-11-23 20:49:48,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088025586] [2019-11-23 20:49:48,142 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 [2019-11-23 20:49:48,187 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:49:48,187 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:49:48,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-23 20:49:48,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:48,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:48,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-11-23 20:49:48,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328874626] [2019-11-23 20:49:48,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 20:49:48,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:48,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 20:49:48,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-11-23 20:49:48,250 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 12 states. [2019-11-23 20:49:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:48,389 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2019-11-23 20:49:48,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-23 20:49:48,390 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2019-11-23 20:49:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:48,391 INFO L225 Difference]: With dead ends: 85 [2019-11-23 20:49:48,391 INFO L226 Difference]: Without dead ends: 47 [2019-11-23 20:49:48,392 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-11-23 20:49:48,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-23 20:49:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2019-11-23 20:49:48,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-23 20:49:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-11-23 20:49:48,405 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2019-11-23 20:49:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:48,408 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2019-11-23 20:49:48,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 20:49:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2019-11-23 20:49:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 20:49:48,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:48,410 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:48,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:48,611 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:48,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1364521933, now seen corresponding path program 3 times [2019-11-23 20:49:48,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:48,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039493897] [2019-11-23 20:49:48,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:48,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039493897] [2019-11-23 20:49:48,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053436519] [2019-11-23 20:49:48,787 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 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 [2019-11-23 20:49:48,844 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-23 20:49:48,845 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:49:48,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-23 20:49:48,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:48,910 INFO L377 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 15 treesize of output 11 [2019-11-23 20:49:48,911 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:48,916 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:48,917 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:48,917 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-11-23 20:49:48,961 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:48,962 INFO L377 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 26 treesize of output 25 [2019-11-23 20:49:48,963 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:48,971 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:48,972 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:48,972 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-11-23 20:49:49,006 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:49,008 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:49,009 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:49,010 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:49,010 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2019-11-23 20:49:49,011 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:49,022 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:49,023 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:49,023 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-11-23 20:49:49,113 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:49,114 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:49,115 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:49,123 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:49,123 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2019-11-23 20:49:49,124 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:49,143 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:49,144 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:49,144 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:31 [2019-11-23 20:49:49,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:49:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:49,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:49,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2019-11-23 20:49:49,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263362803] [2019-11-23 20:49:49,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-23 20:49:49,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:49,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-23 20:49:49,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2019-11-23 20:49:49,309 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 24 states. [2019-11-23 20:49:50,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:50,081 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2019-11-23 20:49:50,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-23 20:49:50,082 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2019-11-23 20:49:50,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:50,083 INFO L225 Difference]: With dead ends: 84 [2019-11-23 20:49:50,083 INFO L226 Difference]: Without dead ends: 82 [2019-11-23 20:49:50,084 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=266, Invalid=1294, Unknown=0, NotChecked=0, Total=1560 [2019-11-23 20:49:50,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-23 20:49:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 53. [2019-11-23 20:49:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-23 20:49:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-11-23 20:49:50,095 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 28 [2019-11-23 20:49:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:50,096 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2019-11-23 20:49:50,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-23 20:49:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2019-11-23 20:49:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 20:49:50,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:50,097 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:50,308 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:50,308 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:50,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1191072622, now seen corresponding path program 4 times [2019-11-23 20:49:50,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:50,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199414258] [2019-11-23 20:49:50,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:50,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199414258] [2019-11-23 20:49:50,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70129047] [2019-11-23 20:49:50,470 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2019-11-23 20:49:50,527 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 20:49:50,527 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:49:50,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-23 20:49:50,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:50,546 INFO L377 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 13 treesize of output 9 [2019-11-23 20:49:50,547 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:50,549 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:50,549 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:50,549 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-11-23 20:49:50,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:49:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:50,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:50,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-11-23 20:49:50,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410882060] [2019-11-23 20:49:50,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-23 20:49:50,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:50,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-23 20:49:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-11-23 20:49:50,643 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 16 states. [2019-11-23 20:49:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:51,041 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2019-11-23 20:49:51,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-23 20:49:51,041 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2019-11-23 20:49:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:51,042 INFO L225 Difference]: With dead ends: 110 [2019-11-23 20:49:51,043 INFO L226 Difference]: Without dead ends: 108 [2019-11-23 20:49:51,043 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2019-11-23 20:49:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-23 20:49:51,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 57. [2019-11-23 20:49:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-23 20:49:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2019-11-23 20:49:51,066 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 28 [2019-11-23 20:49:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:51,066 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2019-11-23 20:49:51,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-23 20:49:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2019-11-23 20:49:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-23 20:49:51,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:51,068 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:51,272 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:51,273 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:51,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:51,274 INFO L82 PathProgramCache]: Analyzing trace with hash 948898404, now seen corresponding path program 5 times [2019-11-23 20:49:51,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:51,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146251930] [2019-11-23 20:49:51,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:51,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146251930] [2019-11-23 20:49:51,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274997974] [2019-11-23 20:49:51,356 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2019-11-23 20:49:51,409 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-23 20:49:51,409 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:49:51,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 20:49:51,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:51,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:51,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-11-23 20:49:51,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284639166] [2019-11-23 20:49:51,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-23 20:49:51,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:51,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-23 20:49:51,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-11-23 20:49:51,481 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 15 states. [2019-11-23 20:49:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:51,650 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2019-11-23 20:49:51,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-23 20:49:51,651 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2019-11-23 20:49:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:51,652 INFO L225 Difference]: With dead ends: 90 [2019-11-23 20:49:51,652 INFO L226 Difference]: Without dead ends: 67 [2019-11-23 20:49:51,653 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2019-11-23 20:49:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-23 20:49:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 53. [2019-11-23 20:49:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-23 20:49:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2019-11-23 20:49:51,661 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 32 [2019-11-23 20:49:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:51,661 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2019-11-23 20:49:51,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-23 20:49:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2019-11-23 20:49:51,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-23 20:49:51,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:51,662 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:51,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:51,867 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:51,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:51,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1789893985, now seen corresponding path program 6 times [2019-11-23 20:49:51,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:51,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831602549] [2019-11-23 20:49:51,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 5 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:52,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831602549] [2019-11-23 20:49:52,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432168862] [2019-11-23 20:49:52,100 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:52,154 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-23 20:49:52,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:49:52,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-23 20:49:52,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:52,200 INFO L377 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 15 treesize of output 11 [2019-11-23 20:49:52,200 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,205 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,205 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,206 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-11-23 20:49:52,266 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,267 INFO L377 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 26 treesize of output 25 [2019-11-23 20:49:52,268 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,275 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,276 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,276 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-11-23 20:49:52,308 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,309 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,310 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,312 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,312 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2019-11-23 20:49:52,313 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,321 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,322 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,322 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-11-23 20:49:52,390 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,392 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,393 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,396 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,398 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,399 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,399 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,400 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2019-11-23 20:49:52,401 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,412 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,412 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,412 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2019-11-23 20:49:52,455 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,457 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:49:52,458 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,459 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,461 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,461 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,462 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,463 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,464 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2019-11-23 20:49:52,465 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,491 INFO L567 ElimStorePlain]: treesize reduction 11, result has 80.7 percent of original size [2019-11-23 20:49:52,491 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,492 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:46 [2019-11-23 20:49:52,571 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,571 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,572 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,574 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,575 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,576 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:49:52,578 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,578 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 49 [2019-11-23 20:49:52,579 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,590 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:52,590 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:52,590 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:40 [2019-11-23 20:49:52,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:49:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:52,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:52,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2019-11-23 20:49:52,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092339365] [2019-11-23 20:49:52,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-23 20:49:52,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:52,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-23 20:49:52,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2019-11-23 20:49:52,844 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 31 states. [2019-11-23 20:49:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:54,268 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2019-11-23 20:49:54,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-11-23 20:49:54,269 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 40 [2019-11-23 20:49:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:54,270 INFO L225 Difference]: With dead ends: 119 [2019-11-23 20:49:54,270 INFO L226 Difference]: Without dead ends: 117 [2019-11-23 20:49:54,273 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=395, Invalid=2575, Unknown=0, NotChecked=0, Total=2970 [2019-11-23 20:49:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-11-23 20:49:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2019-11-23 20:49:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-23 20:49:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2019-11-23 20:49:54,283 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 40 [2019-11-23 20:49:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:54,284 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2019-11-23 20:49:54,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-23 20:49:54,284 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2019-11-23 20:49:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-23 20:49:54,285 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:54,285 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:54,489 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:54,489 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:54,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1942581397, now seen corresponding path program 7 times [2019-11-23 20:49:54,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:54,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090647386] [2019-11-23 20:49:54,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:54,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090647386] [2019-11-23 20:49:54,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209870117] [2019-11-23 20:49:54,591 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:54,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-23 20:49:54,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:54,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:54,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2019-11-23 20:49:54,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541922574] [2019-11-23 20:49:54,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-23 20:49:54,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:54,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-23 20:49:54,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2019-11-23 20:49:54,743 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 18 states. [2019-11-23 20:49:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:54,944 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2019-11-23 20:49:54,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-23 20:49:54,944 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2019-11-23 20:49:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:54,948 INFO L225 Difference]: With dead ends: 132 [2019-11-23 20:49:54,948 INFO L226 Difference]: Without dead ends: 105 [2019-11-23 20:49:54,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2019-11-23 20:49:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-11-23 20:49:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2019-11-23 20:49:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-23 20:49:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2019-11-23 20:49:54,965 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 40 [2019-11-23 20:49:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:54,966 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2019-11-23 20:49:54,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-23 20:49:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2019-11-23 20:49:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-23 20:49:54,971 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:54,971 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:55,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:55,183 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:55,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:55,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1613367984, now seen corresponding path program 8 times [2019-11-23 20:49:55,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:55,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531074527] [2019-11-23 20:49:55,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:55,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531074527] [2019-11-23 20:49:55,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92453179] [2019-11-23 20:49:55,385 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:55,421 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:49:55,422 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:49:55,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-23 20:49:55,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:55,539 INFO L377 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 13 treesize of output 9 [2019-11-23 20:49:55,539 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:55,545 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:55,546 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:55,546 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-11-23 20:49:55,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:49:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:55,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:55,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2019-11-23 20:49:55,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629983032] [2019-11-23 20:49:55,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-23 20:49:55,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-23 20:49:55,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2019-11-23 20:49:55,773 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2019-11-23 20:49:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:56,716 INFO L93 Difference]: Finished difference Result 152 states and 156 transitions. [2019-11-23 20:49:56,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-23 20:49:56,717 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 44 [2019-11-23 20:49:56,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:56,718 INFO L225 Difference]: With dead ends: 152 [2019-11-23 20:49:56,718 INFO L226 Difference]: Without dead ends: 150 [2019-11-23 20:49:56,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2019-11-23 20:49:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-23 20:49:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 73. [2019-11-23 20:49:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-23 20:49:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2019-11-23 20:49:56,731 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 44 [2019-11-23 20:49:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:56,731 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2019-11-23 20:49:56,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-23 20:49:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2019-11-23 20:49:56,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-23 20:49:56,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:56,733 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:56,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:56,937 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash 924773190, now seen corresponding path program 9 times [2019-11-23 20:49:56,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:56,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072028679] [2019-11-23 20:49:56,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:57,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072028679] [2019-11-23 20:49:57,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568885527] [2019-11-23 20:49:57,084 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:57,171 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-23 20:49:57,171 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:49:57,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-23 20:49:57,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:57,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:57,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2019-11-23 20:49:57,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327746438] [2019-11-23 20:49:57,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-23 20:49:57,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:57,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-23 20:49:57,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2019-11-23 20:49:57,344 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 21 states. [2019-11-23 20:49:57,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:49:57,588 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2019-11-23 20:49:57,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-23 20:49:57,588 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 48 [2019-11-23 20:49:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:49:57,589 INFO L225 Difference]: With dead ends: 124 [2019-11-23 20:49:57,589 INFO L226 Difference]: Without dead ends: 93 [2019-11-23 20:49:57,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2019-11-23 20:49:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-23 20:49:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2019-11-23 20:49:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-23 20:49:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2019-11-23 20:49:57,604 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 48 [2019-11-23 20:49:57,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:49:57,604 INFO L462 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2019-11-23 20:49:57,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-23 20:49:57,604 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2019-11-23 20:49:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-23 20:49:57,606 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:49:57,606 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:49:57,810 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:57,810 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:49:57,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:49:57,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1873764875, now seen corresponding path program 10 times [2019-11-23 20:49:57,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:49:57,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921632569] [2019-11-23 20:49:57,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:49:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:49:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:58,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921632569] [2019-11-23 20:49:58,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752994009] [2019-11-23 20:49:58,158 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:49:58,218 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 20:49:58,218 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:49:58,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-23 20:49:58,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:49:58,268 INFO L377 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 15 treesize of output 11 [2019-11-23 20:49:58,269 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,273 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:58,274 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,274 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-11-23 20:49:58,317 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:58,318 INFO L377 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 [2019-11-23 20:49:58,319 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,335 INFO L567 ElimStorePlain]: treesize reduction 32, result has 43.9 percent of original size [2019-11-23 20:49:58,336 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,336 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2019-11-23 20:49:58,395 INFO L343 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2019-11-23 20:49:58,395 INFO L377 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 37 treesize of output 69 [2019-11-23 20:49:58,396 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,416 INFO L567 ElimStorePlain]: treesize reduction 30, result has 54.5 percent of original size [2019-11-23 20:49:58,416 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,416 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2019-11-23 20:49:58,522 INFO L343 Elim1Store]: treesize reduction 125, result has 34.2 percent of original size [2019-11-23 20:49:58,523 INFO L377 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 53 treesize of output 90 [2019-11-23 20:49:58,524 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,550 INFO L567 ElimStorePlain]: treesize reduction 32, result has 61.9 percent of original size [2019-11-23 20:49:58,551 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,551 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2019-11-23 20:49:58,650 INFO L343 Elim1Store]: treesize reduction 160, result has 32.8 percent of original size [2019-11-23 20:49:58,650 INFO L377 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 9 case distinctions, treesize of input 64 treesize of output 105 [2019-11-23 20:49:58,652 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,681 INFO L567 ElimStorePlain]: treesize reduction 46, result has 52.1 percent of original size [2019-11-23 20:49:58,682 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,682 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:50 [2019-11-23 20:49:58,842 INFO L343 Elim1Store]: treesize reduction 216, result has 26.3 percent of original size [2019-11-23 20:49:58,843 INFO L377 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 67 treesize of output 107 [2019-11-23 20:49:58,844 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,878 INFO L567 ElimStorePlain]: treesize reduction 32, result has 67.3 percent of original size [2019-11-23 20:49:58,878 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:58,878 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:66 [2019-11-23 20:49:59,048 INFO L343 Elim1Store]: treesize reduction 267, result has 25.2 percent of original size [2019-11-23 20:49:59,048 INFO L377 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 14 case distinctions, treesize of input 78 treesize of output 122 [2019-11-23 20:49:59,050 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:59,086 INFO L567 ElimStorePlain]: treesize reduction 46, result has 58.2 percent of original size [2019-11-23 20:49:59,087 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:59,087 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:81, output treesize:64 [2019-11-23 20:49:59,239 INFO L343 Elim1Store]: treesize reduction 224, result has 14.2 percent of original size [2019-11-23 20:49:59,240 INFO L377 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 14 case distinctions, treesize of input 67 treesize of output 69 [2019-11-23 20:49:59,242 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:49:59,255 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:49:59,255 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:49:59,256 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:46 [2019-11-23 20:49:59,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:49:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:49:59,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:49:59,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 34 [2019-11-23 20:49:59,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194291936] [2019-11-23 20:49:59,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-23 20:49:59,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:49:59,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-23 20:49:59,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2019-11-23 20:49:59,610 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 34 states. [2019-11-23 20:50:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:02,057 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2019-11-23 20:50:02,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-11-23 20:50:02,057 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 52 [2019-11-23 20:50:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:02,058 INFO L225 Difference]: With dead ends: 153 [2019-11-23 20:50:02,058 INFO L226 Difference]: Without dead ends: 151 [2019-11-23 20:50:02,060 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=481, Invalid=3551, Unknown=0, NotChecked=0, Total=4032 [2019-11-23 20:50:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-23 20:50:02,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 89. [2019-11-23 20:50:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-23 20:50:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2019-11-23 20:50:02,073 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 52 [2019-11-23 20:50:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:02,073 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2019-11-23 20:50:02,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-23 20:50:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2019-11-23 20:50:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-23 20:50:02,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:02,075 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:02,277 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:02,278 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:02,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1215546761, now seen corresponding path program 11 times [2019-11-23 20:50:02,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:02,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209501497] [2019-11-23 20:50:02,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 51 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:02,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209501497] [2019-11-23 20:50:02,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817961754] [2019-11-23 20:50:02,411 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:02,499 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-23 20:50:02,499 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:02,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-23 20:50:02,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 72 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:02,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:02,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2019-11-23 20:50:02,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967941665] [2019-11-23 20:50:02,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-23 20:50:02,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:02,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-23 20:50:02,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2019-11-23 20:50:02,659 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 24 states. [2019-11-23 20:50:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:02,898 INFO L93 Difference]: Finished difference Result 174 states and 179 transitions. [2019-11-23 20:50:02,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-23 20:50:02,899 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 56 [2019-11-23 20:50:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:02,900 INFO L225 Difference]: With dead ends: 174 [2019-11-23 20:50:02,900 INFO L226 Difference]: Without dead ends: 139 [2019-11-23 20:50:02,902 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2019-11-23 20:50:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-11-23 20:50:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2019-11-23 20:50:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-23 20:50:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2019-11-23 20:50:02,909 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 56 [2019-11-23 20:50:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:02,910 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2019-11-23 20:50:02,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-23 20:50:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2019-11-23 20:50:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-23 20:50:02,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:02,911 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:03,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:03,111 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash -836376270, now seen corresponding path program 12 times [2019-11-23 20:50:03,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:03,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089000978] [2019-11-23 20:50:03,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:03,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089000978] [2019-11-23 20:50:03,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658426032] [2019-11-23 20:50:03,409 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:03,522 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-23 20:50:03,522 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:03,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-23 20:50:03,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:03,706 INFO L377 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 15 treesize of output 11 [2019-11-23 20:50:03,707 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:03,729 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:03,730 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. [2019-11-23 20:50:03,731 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2019-11-23 20:50:03,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:04,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 61 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:04,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:04,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 38 [2019-11-23 20:50:04,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73471594] [2019-11-23 20:50:04,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-23 20:50:04,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:04,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-23 20:50:04,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2019-11-23 20:50:04,242 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 38 states. [2019-11-23 20:50:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:08,129 INFO L93 Difference]: Finished difference Result 194 states and 198 transitions. [2019-11-23 20:50:08,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2019-11-23 20:50:08,130 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 60 [2019-11-23 20:50:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:08,131 INFO L225 Difference]: With dead ends: 194 [2019-11-23 20:50:08,131 INFO L226 Difference]: Without dead ends: 159 [2019-11-23 20:50:08,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3442 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1201, Invalid=11009, Unknown=0, NotChecked=0, Total=12210 [2019-11-23 20:50:08,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-23 20:50:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 85. [2019-11-23 20:50:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-23 20:50:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2019-11-23 20:50:08,143 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 60 [2019-11-23 20:50:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:08,143 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2019-11-23 20:50:08,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-23 20:50:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2019-11-23 20:50:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-23 20:50:08,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:08,144 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:08,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:08,345 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:08,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:08,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1168444023, now seen corresponding path program 13 times [2019-11-23 20:50:08,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:08,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185861171] [2019-11-23 20:50:08,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 25 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:09,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185861171] [2019-11-23 20:50:09,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27924738] [2019-11-23 20:50:09,080 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:09,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 52 conjunts are in the unsatisfiable core [2019-11-23 20:50:09,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:09,333 INFO L377 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 15 treesize of output 11 [2019-11-23 20:50:09,333 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,339 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:09,340 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,340 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-23 20:50:09,415 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:09,416 INFO L377 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 [2019-11-23 20:50:09,416 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,432 INFO L567 ElimStorePlain]: treesize reduction 32, result has 43.9 percent of original size [2019-11-23 20:50:09,433 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,433 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2019-11-23 20:50:09,496 INFO L343 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2019-11-23 20:50:09,497 INFO L377 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 37 treesize of output 69 [2019-11-23 20:50:09,497 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,516 INFO L567 ElimStorePlain]: treesize reduction 30, result has 54.5 percent of original size [2019-11-23 20:50:09,516 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,517 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2019-11-23 20:50:09,650 INFO L343 Elim1Store]: treesize reduction 125, result has 34.2 percent of original size [2019-11-23 20:50:09,651 INFO L377 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 53 treesize of output 90 [2019-11-23 20:50:09,652 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,678 INFO L567 ElimStorePlain]: treesize reduction 32, result has 61.9 percent of original size [2019-11-23 20:50:09,678 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,679 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2019-11-23 20:50:09,798 INFO L343 Elim1Store]: treesize reduction 160, result has 32.8 percent of original size [2019-11-23 20:50:09,799 INFO L377 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 9 case distinctions, treesize of input 64 treesize of output 105 [2019-11-23 20:50:09,800 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,831 INFO L567 ElimStorePlain]: treesize reduction 46, result has 52.1 percent of original size [2019-11-23 20:50:09,831 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:09,831 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:50 [2019-11-23 20:50:09,991 INFO L343 Elim1Store]: treesize reduction 216, result has 26.3 percent of original size [2019-11-23 20:50:09,991 INFO L377 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 67 treesize of output 107 [2019-11-23 20:50:09,993 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:10,026 INFO L567 ElimStorePlain]: treesize reduction 32, result has 67.3 percent of original size [2019-11-23 20:50:10,027 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:10,027 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:66 [2019-11-23 20:50:10,199 INFO L343 Elim1Store]: treesize reduction 267, result has 25.2 percent of original size [2019-11-23 20:50:10,200 INFO L377 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 14 case distinctions, treesize of input 78 treesize of output 122 [2019-11-23 20:50:10,201 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:10,235 INFO L567 ElimStorePlain]: treesize reduction 46, result has 58.2 percent of original size [2019-11-23 20:50:10,236 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:10,236 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:81, output treesize:64 [2019-11-23 20:50:10,510 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2019-11-23 20:50:10,512 INFO L343 Elim1Store]: treesize reduction 120, result has 63.2 percent of original size [2019-11-23 20:50:10,513 INFO L377 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 62 treesize of output 233 [2019-11-23 20:50:10,514 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:10,580 INFO L567 ElimStorePlain]: treesize reduction 160, result has 27.6 percent of original size [2019-11-23 20:50:10,581 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:10,581 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2019-11-23 20:50:10,865 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2019-11-23 20:50:10,867 INFO L343 Elim1Store]: treesize reduction 234, result has 47.1 percent of original size [2019-11-23 20:50:10,867 INFO L377 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 73 treesize of output 237 [2019-11-23 20:50:10,868 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:10,934 INFO L567 ElimStorePlain]: treesize reduction 161, result has 27.5 percent of original size [2019-11-23 20:50:10,935 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:10,935 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:61 [2019-11-23 20:50:11,133 INFO L343 Elim1Store]: treesize reduction 310, result has 12.9 percent of original size [2019-11-23 20:50:11,133 INFO L377 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 20 case distinctions, treesize of input 68 treesize of output 73 [2019-11-23 20:50:11,134 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:11,147 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:11,148 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:11,148 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:55 [2019-11-23 20:50:11,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:11,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:11,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29] total 47 [2019-11-23 20:50:11,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573354543] [2019-11-23 20:50:11,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-11-23 20:50:11,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-11-23 20:50:11,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2019, Unknown=0, NotChecked=0, Total=2162 [2019-11-23 20:50:11,783 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 47 states. [2019-11-23 20:50:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:16,714 INFO L93 Difference]: Finished difference Result 187 states and 198 transitions. [2019-11-23 20:50:16,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-11-23 20:50:16,715 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 64 [2019-11-23 20:50:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:16,717 INFO L225 Difference]: With dead ends: 187 [2019-11-23 20:50:16,717 INFO L226 Difference]: Without dead ends: 185 [2019-11-23 20:50:16,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2830 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=743, Invalid=9559, Unknown=0, NotChecked=0, Total=10302 [2019-11-23 20:50:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-11-23 20:50:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 105. [2019-11-23 20:50:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-23 20:50:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2019-11-23 20:50:16,734 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 64 [2019-11-23 20:50:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:16,735 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2019-11-23 20:50:16,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-11-23 20:50:16,735 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2019-11-23 20:50:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-23 20:50:16,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:16,736 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:16,939 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:16,940 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash -20883879, now seen corresponding path program 14 times [2019-11-23 20:50:16,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:16,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078688416] [2019-11-23 20:50:16,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 99 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:17,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078688416] [2019-11-23 20:50:17,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841699688] [2019-11-23 20:50:17,114 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:17,160 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:50:17,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:17,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-23 20:50:17,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:17,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:17,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 30 [2019-11-23 20:50:17,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368755199] [2019-11-23 20:50:17,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-23 20:50:17,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:17,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-23 20:50:17,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2019-11-23 20:50:17,332 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 30 states. [2019-11-23 20:50:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:17,692 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2019-11-23 20:50:17,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-23 20:50:17,692 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 72 [2019-11-23 20:50:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:17,693 INFO L225 Difference]: With dead ends: 216 [2019-11-23 20:50:17,693 INFO L226 Difference]: Without dead ends: 173 [2019-11-23 20:50:17,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=1133, Unknown=0, NotChecked=0, Total=1482 [2019-11-23 20:50:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-23 20:50:17,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 105. [2019-11-23 20:50:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-23 20:50:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2019-11-23 20:50:17,706 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 72 [2019-11-23 20:50:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:17,706 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2019-11-23 20:50:17,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-23 20:50:17,706 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2019-11-23 20:50:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-23 20:50:17,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:17,707 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:17,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:17,908 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:17,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:17,908 INFO L82 PathProgramCache]: Analyzing trace with hash -296854557, now seen corresponding path program 15 times [2019-11-23 20:50:17,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:17,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273242901] [2019-11-23 20:50:17,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 41 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:18,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273242901] [2019-11-23 20:50:18,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023546495] [2019-11-23 20:50:18,463 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:18,936 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2019-11-23 20:50:18,936 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:18,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-23 20:50:18,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:18,980 INFO L377 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 15 treesize of output 11 [2019-11-23 20:50:18,980 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:18,985 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:18,986 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:18,986 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-11-23 20:50:19,031 INFO L343 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2019-11-23 20:50:19,032 INFO L377 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 31 treesize of output 30 [2019-11-23 20:50:19,032 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,038 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:19,039 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,039 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2019-11-23 20:50:19,098 INFO L343 Elim1Store]: treesize reduction 96, result has 20.7 percent of original size [2019-11-23 20:50:19,099 INFO L377 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 42 treesize of output 44 [2019-11-23 20:50:19,099 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,107 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:19,108 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,108 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-11-23 20:50:19,282 INFO L343 Elim1Store]: treesize reduction 36, result has 77.5 percent of original size [2019-11-23 20:50:19,283 INFO L377 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 44 treesize of output 145 [2019-11-23 20:50:19,283 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,327 INFO L567 ElimStorePlain]: treesize reduction 96, result has 30.9 percent of original size [2019-11-23 20:50:19,327 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,327 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2019-11-23 20:50:19,526 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2019-11-23 20:50:19,527 INFO L343 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2019-11-23 20:50:19,528 INFO L377 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 55 treesize of output 153 [2019-11-23 20:50:19,529 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,577 INFO L567 ElimStorePlain]: treesize reduction 101, result has 29.9 percent of original size [2019-11-23 20:50:19,577 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,578 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:43 [2019-11-23 20:50:19,896 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2019-11-23 20:50:19,897 INFO L343 Elim1Store]: treesize reduction 116, result has 53.8 percent of original size [2019-11-23 20:50:19,898 INFO L377 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 59 treesize of output 163 [2019-11-23 20:50:19,899 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,943 INFO L567 ElimStorePlain]: treesize reduction 96, result has 37.7 percent of original size [2019-11-23 20:50:19,944 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:19,944 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2019-11-23 20:50:20,131 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2019-11-23 20:50:20,132 INFO L343 Elim1Store]: treesize reduction 137, result has 55.7 percent of original size [2019-11-23 20:50:20,132 INFO L377 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 14 case distinctions, treesize of input 70 treesize of output 202 [2019-11-23 20:50:20,133 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:20,179 INFO L567 ElimStorePlain]: treesize reduction 122, result has 31.5 percent of original size [2019-11-23 20:50:20,180 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:20,180 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:73, output treesize:56 [2019-11-23 20:50:20,439 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2019-11-23 20:50:20,439 INFO L343 Elim1Store]: treesize reduction 120, result has 63.2 percent of original size [2019-11-23 20:50:20,440 INFO L377 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 62 treesize of output 233 [2019-11-23 20:50:20,441 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:20,497 INFO L567 ElimStorePlain]: treesize reduction 160, result has 27.6 percent of original size [2019-11-23 20:50:20,497 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:20,498 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2019-11-23 20:50:20,761 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2019-11-23 20:50:20,761 INFO L343 Elim1Store]: treesize reduction 234, result has 47.1 percent of original size [2019-11-23 20:50:20,762 INFO L377 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 73 treesize of output 237 [2019-11-23 20:50:20,763 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:20,828 INFO L567 ElimStorePlain]: treesize reduction 161, result has 27.5 percent of original size [2019-11-23 20:50:20,829 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:20,829 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:61 [2019-11-23 20:50:21,166 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 63 [2019-11-23 20:50:21,167 INFO L343 Elim1Store]: treesize reduction 228, result has 48.8 percent of original size [2019-11-23 20:50:21,168 INFO L377 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 77 treesize of output 251 [2019-11-23 20:50:21,169 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:21,237 INFO L567 ElimStorePlain]: treesize reduction 160, result has 32.2 percent of original size [2019-11-23 20:50:21,237 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:21,238 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:80, output treesize:76 [2019-11-23 20:50:21,588 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 74 [2019-11-23 20:50:21,589 INFO L343 Elim1Store]: treesize reduction 251, result has 52.6 percent of original size [2019-11-23 20:50:21,589 INFO L377 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 27 case distinctions, treesize of input 88 treesize of output 314 [2019-11-23 20:50:21,591 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:21,678 INFO L567 ElimStorePlain]: treesize reduction 214, result has 25.7 percent of original size [2019-11-23 20:50:21,678 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:21,678 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:91, output treesize:74 [2019-11-23 20:50:22,026 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 35 [2019-11-23 20:50:22,027 INFO L343 Elim1Store]: treesize reduction 408, result has 11.9 percent of original size [2019-11-23 20:50:22,027 INFO L377 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 27 case distinctions, treesize of input 83 treesize of output 91 [2019-11-23 20:50:22,028 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:22,044 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:22,044 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:22,045 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:83, output treesize:64 [2019-11-23 20:50:22,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:22,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:22,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 34] total 48 [2019-11-23 20:50:22,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784706601] [2019-11-23 20:50:22,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-23 20:50:22,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:22,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-23 20:50:22,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1988, Unknown=0, NotChecked=0, Total=2256 [2019-11-23 20:50:22,623 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 48 states. [2019-11-23 20:50:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:26,285 INFO L93 Difference]: Finished difference Result 255 states and 268 transitions. [2019-11-23 20:50:26,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-11-23 20:50:26,285 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 76 [2019-11-23 20:50:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:26,287 INFO L225 Difference]: With dead ends: 255 [2019-11-23 20:50:26,287 INFO L226 Difference]: Without dead ends: 253 [2019-11-23 20:50:26,290 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2401 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=747, Invalid=7263, Unknown=0, NotChecked=0, Total=8010 [2019-11-23 20:50:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-11-23 20:50:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 125. [2019-11-23 20:50:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-11-23 20:50:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2019-11-23 20:50:26,306 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 76 [2019-11-23 20:50:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:26,306 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2019-11-23 20:50:26,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-23 20:50:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2019-11-23 20:50:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-23 20:50:26,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:26,307 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:26,512 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:26,512 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash 609496852, now seen corresponding path program 16 times [2019-11-23 20:50:26,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:26,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061755822] [2019-11-23 20:50:26,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:26,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061755822] [2019-11-23 20:50:26,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085181735] [2019-11-23 20:50:26,867 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:26,913 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 20:50:26,913 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:26,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-23 20:50:26,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:26,939 INFO L377 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 13 treesize of output 9 [2019-11-23 20:50:26,939 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:26,941 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:26,941 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:26,942 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-11-23 20:50:27,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:27,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:27,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2019-11-23 20:50:27,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68602048] [2019-11-23 20:50:27,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-23 20:50:27,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:27,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-23 20:50:27,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2019-11-23 20:50:27,268 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand 34 states. [2019-11-23 20:50:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:28,867 INFO L93 Difference]: Finished difference Result 290 states and 296 transitions. [2019-11-23 20:50:28,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-11-23 20:50:28,868 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 76 [2019-11-23 20:50:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:28,870 INFO L225 Difference]: With dead ends: 290 [2019-11-23 20:50:28,870 INFO L226 Difference]: Without dead ends: 288 [2019-11-23 20:50:28,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=317, Invalid=3843, Unknown=0, NotChecked=0, Total=4160 [2019-11-23 20:50:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2019-11-23 20:50:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 125. [2019-11-23 20:50:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-11-23 20:50:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2019-11-23 20:50:28,887 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 76 [2019-11-23 20:50:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:28,888 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2019-11-23 20:50:28,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-23 20:50:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2019-11-23 20:50:28,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-23 20:50:28,888 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:28,889 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:29,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:29,092 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:29,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2057478922, now seen corresponding path program 17 times [2019-11-23 20:50:29,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:29,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379676521] [2019-11-23 20:50:29,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 129 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:29,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379676521] [2019-11-23 20:50:29,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984268415] [2019-11-23 20:50:29,300 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:29,435 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-11-23 20:50:29,435 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:29,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-23 20:50:29,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 162 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:29,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:29,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 33 [2019-11-23 20:50:29,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915347747] [2019-11-23 20:50:29,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-23 20:50:29,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-23 20:50:29,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2019-11-23 20:50:29,636 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand 33 states. [2019-11-23 20:50:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:29,994 INFO L93 Difference]: Finished difference Result 246 states and 252 transitions. [2019-11-23 20:50:29,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-23 20:50:29,995 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 80 [2019-11-23 20:50:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:29,996 INFO L225 Difference]: With dead ends: 246 [2019-11-23 20:50:29,996 INFO L226 Difference]: Without dead ends: 199 [2019-11-23 20:50:29,996 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=422, Invalid=1384, Unknown=0, NotChecked=0, Total=1806 [2019-11-23 20:50:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-11-23 20:50:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 121. [2019-11-23 20:50:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-23 20:50:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2019-11-23 20:50:30,011 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 80 [2019-11-23 20:50:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:30,012 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2019-11-23 20:50:30,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-23 20:50:30,012 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2019-11-23 20:50:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-23 20:50:30,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:30,013 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:30,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:30,217 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:30,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:30,217 INFO L82 PathProgramCache]: Analyzing trace with hash -804759985, now seen corresponding path program 18 times [2019-11-23 20:50:30,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:30,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023953025] [2019-11-23 20:50:30,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 61 proven. 389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:30,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023953025] [2019-11-23 20:50:30,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85488673] [2019-11-23 20:50:30,923 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:31,936 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2019-11-23 20:50:31,936 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:31,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 70 conjunts are in the unsatisfiable core [2019-11-23 20:50:31,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:32,118 INFO L377 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 15 treesize of output 11 [2019-11-23 20:50:32,118 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,128 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,128 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,128 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-11-23 20:50:32,190 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,191 INFO L377 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 26 treesize of output 25 [2019-11-23 20:50:32,191 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,200 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,200 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,200 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-11-23 20:50:32,239 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,241 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,242 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,242 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,242 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2019-11-23 20:50:32,243 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,251 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,252 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,252 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2019-11-23 20:50:32,346 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,347 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,348 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,349 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,350 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,351 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,358 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,359 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2019-11-23 20:50:32,359 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,370 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,371 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,371 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2019-11-23 20:50:32,425 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:50:32,426 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,428 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,429 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,431 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,432 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,433 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,434 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,434 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2019-11-23 20:50:32,435 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,460 INFO L567 ElimStorePlain]: treesize reduction 11, result has 80.7 percent of original size [2019-11-23 20:50:32,460 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,460 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:46 [2019-11-23 20:50:32,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,578 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,580 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,582 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,583 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,584 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,585 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,586 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,588 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,589 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,589 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2019-11-23 20:50:32,590 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,604 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,605 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,605 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2019-11-23 20:50:32,671 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,672 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:50:32,673 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,674 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,676 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,679 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,680 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,681 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,682 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,683 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,684 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,685 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,686 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 75 [2019-11-23 20:50:32,686 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,717 INFO L567 ElimStorePlain]: treesize reduction 11, result has 83.3 percent of original size [2019-11-23 20:50:32,717 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,717 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:55 [2019-11-23 20:50:32,848 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,849 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,850 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,851 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,852 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,863 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,864 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,865 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,865 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,866 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,867 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,867 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,868 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,869 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,870 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,871 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,872 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 73 [2019-11-23 20:50:32,872 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,888 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,888 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:32,889 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:64 [2019-11-23 20:50:32,967 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,968 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,969 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,970 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:50:32,971 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,973 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,974 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,975 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,976 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,977 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,978 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,979 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,980 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,981 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,982 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:32,983 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:32,983 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 87 [2019-11-23 20:50:32,984 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:33,020 INFO L567 ElimStorePlain]: treesize reduction 11, result has 85.3 percent of original size [2019-11-23 20:50:33,020 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:33,020 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:64 [2019-11-23 20:50:33,174 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,175 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,175 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,176 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,177 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,178 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,179 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,180 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,182 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,315 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-11-23 20:50:33,315 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:33,316 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 97 treesize of output 332 [2019-11-23 20:50:33,320 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:33,405 INFO L567 ElimStorePlain]: treesize reduction 192, result has 27.5 percent of original size [2019-11-23 20:50:33,406 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:33,406 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:100, output treesize:73 [2019-11-23 20:50:33,493 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,493 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:50:33,494 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,495 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,497 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,499 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,500 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,501 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,501 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,502 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,503 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,504 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,505 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,506 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,507 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,508 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,509 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,510 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,511 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,513 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,514 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:33,515 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 99 [2019-11-23 20:50:33,516 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:33,557 INFO L567 ElimStorePlain]: treesize reduction 11, result has 86.9 percent of original size [2019-11-23 20:50:33,558 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:33,558 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:88, output treesize:73 [2019-11-23 20:50:33,733 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,737 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,744 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,745 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,747 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,748 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,750 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,751 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,752 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,753 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,754 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,756 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,757 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,758 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,758 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,759 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,760 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:33,760 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 80 treesize of output 97 [2019-11-23 20:50:33,761 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:33,785 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:33,786 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:33,786 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:86, output treesize:82 [2019-11-23 20:50:33,890 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,892 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,893 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,895 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,897 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,898 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,900 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,901 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,902 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,903 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,904 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,905 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,906 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,907 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,908 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,909 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,910 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,912 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,913 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,914 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,915 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,916 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,917 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,919 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,920 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,921 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,922 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,923 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,925 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,926 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,927 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,928 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,930 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:33,942 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:33,942 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 35 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 91 treesize of output 141 [2019-11-23 20:50:33,943 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:34,001 INFO L567 ElimStorePlain]: treesize reduction 20, result has 83.7 percent of original size [2019-11-23 20:50:34,002 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:34,002 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:103 [2019-11-23 20:50:34,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:34,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:34,329 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,330 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,331 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,333 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,335 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,336 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,338 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,341 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,342 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,344 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,345 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,347 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,349 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,351 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,352 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,355 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,364 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,365 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,378 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,380 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,381 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,382 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,383 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,385 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,387 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,388 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,390 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,392 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,394 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,396 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,397 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,398 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,399 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,401 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,486 INFO L237 Elim1Store]: Index analysis took 159 ms [2019-11-23 20:50:34,523 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:34,524 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 35 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 144 [2019-11-23 20:50:34,525 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:34,529 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,530 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,531 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,533 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,534 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,535 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,537 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,539 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,540 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,542 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,543 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,546 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,547 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,548 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,550 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,551 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,553 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,555 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,556 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,558 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,559 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,560 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,561 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,562 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,563 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,566 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,567 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,568 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,570 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,572 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,573 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,574 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,575 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,576 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,578 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,579 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,581 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:34,617 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:34,617 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 43 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 189 [2019-11-23 20:50:34,618 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:34,786 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-11-23 20:50:34,787 INFO L567 ElimStorePlain]: treesize reduction 60, result has 78.8 percent of original size [2019-11-23 20:50:34,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:34,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:34,790 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2019-11-23 20:50:34,790 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:208, output treesize:223 [2019-11-23 20:50:34,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:34,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:34,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:34,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:35,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:35,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:35,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:35,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:35,663 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-11-23 20:50:36,252 WARN L192 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-23 20:50:36,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 8 terms [2019-11-23 20:50:36,882 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-11-23 20:50:37,197 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-11-23 20:50:37,523 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-11-23 20:50:37,842 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-11-23 20:50:38,173 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-11-23 20:50:38,512 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-11-23 20:50:38,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 20:50:38,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:38,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:38,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:38,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:38,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:38,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 39] total 63 [2019-11-23 20:50:38,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606493651] [2019-11-23 20:50:38,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 63 states [2019-11-23 20:50:38,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:38,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2019-11-23 20:50:38,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=3543, Unknown=0, NotChecked=0, Total=3906 [2019-11-23 20:50:38,730 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 63 states. [2019-11-23 20:50:40,914 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-11-23 20:50:41,203 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2019-11-23 20:50:42,021 WARN L192 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2019-11-23 20:50:42,241 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-11-23 20:50:42,588 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-23 20:50:42,816 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-11-23 20:50:43,183 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-11-23 20:50:43,526 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-23 20:50:43,857 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-11-23 20:50:44,181 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-23 20:50:44,449 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-11-23 20:50:44,727 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 90 [2019-11-23 20:50:45,116 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2019-11-23 20:50:45,523 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2019-11-23 20:50:45,871 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2019-11-23 20:50:46,205 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2019-11-23 20:50:46,525 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2019-11-23 20:50:46,792 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2019-11-23 20:50:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:46,840 INFO L93 Difference]: Finished difference Result 293 states and 306 transitions. [2019-11-23 20:50:46,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2019-11-23 20:50:46,843 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 88 [2019-11-23 20:50:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:46,844 INFO L225 Difference]: With dead ends: 293 [2019-11-23 20:50:46,844 INFO L226 Difference]: Without dead ends: 291 [2019-11-23 20:50:46,845 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 48 SyntacticMatches, 16 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4053 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=916, Invalid=11294, Unknown=0, NotChecked=0, Total=12210 [2019-11-23 20:50:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-11-23 20:50:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 125. [2019-11-23 20:50:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-11-23 20:50:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2019-11-23 20:50:46,872 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 88 [2019-11-23 20:50:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:46,872 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2019-11-23 20:50:46,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 63 states. [2019-11-23 20:50:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2019-11-23 20:50:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-23 20:50:46,873 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:46,873 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:47,073 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:47,074 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:47,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:47,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2110702651, now seen corresponding path program 19 times [2019-11-23 20:50:47,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:47,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287564994] [2019-11-23 20:50:47,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 163 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:47,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287564994] [2019-11-23 20:50:47,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905141734] [2019-11-23 20:50:47,296 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:47,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-23 20:50:47,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 200 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:47,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:47,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 36 [2019-11-23 20:50:47,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627683979] [2019-11-23 20:50:47,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-23 20:50:47,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:47,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-23 20:50:47,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=957, Unknown=0, NotChecked=0, Total=1260 [2019-11-23 20:50:47,595 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand 36 states. [2019-11-23 20:50:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:48,034 INFO L93 Difference]: Finished difference Result 260 states and 266 transitions. [2019-11-23 20:50:48,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-23 20:50:48,034 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 88 [2019-11-23 20:50:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:48,036 INFO L225 Difference]: With dead ends: 260 [2019-11-23 20:50:48,036 INFO L226 Difference]: Without dead ends: 209 [2019-11-23 20:50:48,037 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=502, Invalid=1660, Unknown=0, NotChecked=0, Total=2162 [2019-11-23 20:50:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-11-23 20:50:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 125. [2019-11-23 20:50:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-11-23 20:50:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2019-11-23 20:50:48,064 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 88 [2019-11-23 20:50:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:48,064 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2019-11-23 20:50:48,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-23 20:50:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2019-11-23 20:50:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-23 20:50:48,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:48,065 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:48,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:48,268 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:48,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:48,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2126956278, now seen corresponding path program 20 times [2019-11-23 20:50:48,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:48,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268863253] [2019-11-23 20:50:48,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:48,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268863253] [2019-11-23 20:50:48,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4348024] [2019-11-23 20:50:48,869 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:48,918 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:50:48,919 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:48,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 61 conjunts are in the unsatisfiable core [2019-11-23 20:50:48,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:49,235 INFO L377 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 13 treesize of output 9 [2019-11-23 20:50:49,235 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:49,239 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:49,240 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:49,240 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-11-23 20:50:49,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:49,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:50:49,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2019-11-23 20:50:49,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909076255] [2019-11-23 20:50:49,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-23 20:50:49,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:50:49,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-23 20:50:49,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2471, Unknown=0, NotChecked=0, Total=2652 [2019-11-23 20:50:49,815 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 52 states. [2019-11-23 20:50:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:50:52,556 INFO L93 Difference]: Finished difference Result 280 states and 285 transitions. [2019-11-23 20:50:52,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-11-23 20:50:52,557 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 92 [2019-11-23 20:50:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:50:52,559 INFO L225 Difference]: With dead ends: 280 [2019-11-23 20:50:52,559 INFO L226 Difference]: Without dead ends: 278 [2019-11-23 20:50:52,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=449, Invalid=7383, Unknown=0, NotChecked=0, Total=7832 [2019-11-23 20:50:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-11-23 20:50:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 125. [2019-11-23 20:50:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-11-23 20:50:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2019-11-23 20:50:52,586 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 92 [2019-11-23 20:50:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:50:52,586 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2019-11-23 20:50:52,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-23 20:50:52,586 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2019-11-23 20:50:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-23 20:50:52,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:50:52,587 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:50:52,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:52,790 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:50:52,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:50:52,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1084023296, now seen corresponding path program 21 times [2019-11-23 20:50:52,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:50:52,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484186838] [2019-11-23 20:50:52,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:50:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:50:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 61 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:50:53,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484186838] [2019-11-23 20:50:53,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128908299] [2019-11-23 20:50:53,514 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:50:54,630 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-23 20:50:54,631 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:50:54,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 60 conjunts are in the unsatisfiable core [2019-11-23 20:50:54,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:50:54,658 INFO L377 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 15 treesize of output 11 [2019-11-23 20:50:54,658 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:54,662 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:54,662 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:54,663 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-11-23 20:50:54,702 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:54,702 INFO L377 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 [2019-11-23 20:50:54,703 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:54,718 INFO L567 ElimStorePlain]: treesize reduction 32, result has 43.9 percent of original size [2019-11-23 20:50:54,719 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:54,719 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2019-11-23 20:50:54,787 INFO L343 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2019-11-23 20:50:54,788 INFO L377 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 37 treesize of output 69 [2019-11-23 20:50:54,788 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:54,808 INFO L567 ElimStorePlain]: treesize reduction 30, result has 54.5 percent of original size [2019-11-23 20:50:54,809 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:50:54,809 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2019-11-23 20:50:55,002 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-11-23 20:50:55,004 INFO L343 Elim1Store]: treesize reduction 17, result has 91.1 percent of original size [2019-11-23 20:50:55,005 INFO L377 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 49 treesize of output 194 [2019-11-23 20:50:55,006 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:55,057 INFO L567 ElimStorePlain]: treesize reduction 140, result has 27.5 percent of original size [2019-11-23 20:50:55,058 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. [2019-11-23 20:50:55,058 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:53 [2019-11-23 20:50:55,252 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-23 20:50:55,253 INFO L343 Elim1Store]: treesize reduction 106, result has 62.8 percent of original size [2019-11-23 20:50:55,253 INFO L377 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 60 treesize of output 202 [2019-11-23 20:50:55,254 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:55,338 INFO L567 ElimStorePlain]: treesize reduction 121, result has 38.9 percent of original size [2019-11-23 20:50:55,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:55,339 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. [2019-11-23 20:50:55,339 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:77 [2019-11-23 20:50:55,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:55,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:55,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:55,623 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,625 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,627 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,629 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,631 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,633 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,635 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,636 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,638 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,640 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,677 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 81 [2019-11-23 20:50:55,678 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:55,682 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,683 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,685 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,686 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,687 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,689 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,696 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,697 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,699 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,702 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,703 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,704 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,705 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,716 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:55,716 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 113 [2019-11-23 20:50:55,717 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:55,813 INFO L567 ElimStorePlain]: treesize reduction 17, result has 89.9 percent of original size [2019-11-23 20:50:55,814 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 2 xjuncts. [2019-11-23 20:50:55,814 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:159, output treesize:151 [2019-11-23 20:50:55,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:55,953 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,954 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,956 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,963 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,964 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,965 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,967 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,969 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,970 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,975 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,976 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:55,978 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,048 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:56,049 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 134 [2019-11-23 20:50:56,049 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:56,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,057 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,058 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,059 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,061 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,062 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,063 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,065 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,066 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,067 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,069 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,070 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,072 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,074 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,075 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,076 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,078 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,080 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:56,109 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:56,109 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 166 [2019-11-23 20:50:56,110 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:56,242 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-23 20:50:56,243 INFO L567 ElimStorePlain]: treesize reduction 69, result has 74.3 percent of original size [2019-11-23 20:50:56,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:56,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:56,245 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 2 xjuncts. [2019-11-23 20:50:56,245 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:181, output treesize:199 [2019-11-23 20:50:56,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:56,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:56,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:56,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:56,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:56,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:56,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:50:57,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 20:50:57,074 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,076 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,099 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,103 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,105 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,107 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,110 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,123 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,134 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,136 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,140 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,142 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,143 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,150 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,156 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,163 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,176 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,197 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,199 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,201 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,203 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,207 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,210 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,216 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,437 INFO L237 Elim1Store]: Index analysis took 366 ms [2019-11-23 20:50:57,489 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:57,490 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 164 [2019-11-23 20:50:57,491 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:57,506 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,508 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,510 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,512 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,518 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,521 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,524 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,527 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,530 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,533 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,535 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,537 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,540 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,542 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,544 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,547 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,550 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,553 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,669 INFO L237 Elim1Store]: Index analysis took 167 ms [2019-11-23 20:50:57,710 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:57,711 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 132 [2019-11-23 20:50:57,712 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:57,722 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,723 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,725 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,726 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,728 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,730 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,731 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,737 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,739 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,740 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,809 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 98 [2019-11-23 20:50:57,810 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:57,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,822 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,824 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,826 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,827 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,829 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,830 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,831 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,833 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,834 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,835 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,837 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,839 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,840 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,842 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,843 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,845 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,846 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,847 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:57,864 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:57,865 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 131 [2019-11-23 20:50:57,866 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:58,134 WARN L192 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 126 [2019-11-23 20:50:58,135 INFO L567 ElimStorePlain]: treesize reduction 106, result has 78.4 percent of original size [2019-11-23 20:50:58,136 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 4 xjuncts. [2019-11-23 20:50:58,136 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:401, output treesize:385 [2019-11-23 20:50:58,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 20:50:58,559 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,572 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,581 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,606 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,614 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,641 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,643 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,646 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,648 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,664 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,666 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,672 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,674 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,677 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,679 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,685 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,699 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,710 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,715 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,722 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,735 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,738 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:58,742 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,032 INFO L237 Elim1Store]: Index analysis took 484 ms [2019-11-23 20:50:59,116 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:59,117 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 185 [2019-11-23 20:50:59,118 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:59,129 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,142 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,148 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,149 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,152 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,158 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,160 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,162 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,166 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,169 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,171 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,179 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,183 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,187 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,189 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,192 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,194 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,196 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,199 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,203 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,209 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,211 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,217 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,399 INFO L237 Elim1Store]: Index analysis took 272 ms [2019-11-23 20:50:59,461 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:59,462 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 184 [2019-11-23 20:50:59,463 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:59,474 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,476 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,478 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,480 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,483 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,485 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,488 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,491 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,495 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,497 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,498 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,500 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,503 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,504 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,508 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,510 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,513 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,516 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,517 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,519 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,597 INFO L237 Elim1Store]: Index analysis took 125 ms [2019-11-23 20:50:59,639 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:59,640 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 20 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 151 [2019-11-23 20:50:59,641 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 20:50:59,661 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,662 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,664 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,665 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,667 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,670 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,672 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,674 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,675 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,676 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,679 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,680 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,682 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,684 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,686 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,687 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,689 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,690 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,691 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,693 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,694 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,696 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,697 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,698 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,700 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,702 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,703 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,704 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,706 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,707 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,708 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:50:59,769 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:50:59,770 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 33 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 217 [2019-11-23 20:50:59,771 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-23 20:51:00,319 WARN L192 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 137 [2019-11-23 20:51:00,320 INFO L567 ElimStorePlain]: treesize reduction 208, result has 69.8 percent of original size [2019-11-23 20:51:00,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,328 INFO L496 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: 8 dim-0 vars, and 4 xjuncts. [2019-11-23 20:51:00,328 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:445, output treesize:481 [2019-11-23 20:51:00,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,832 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2019-11-23 20:51:00,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 20:51:00,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:00,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:51:01,871 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2019-11-23 20:51:04,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 8 terms [2019-11-23 20:51:05,629 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:06,306 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:06,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:07,687 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:08,984 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:09,595 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:10,444 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:10,839 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:11,774 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:13,670 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:14,272 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:15,965 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:16,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:19,951 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:51:20,513 INFO L189 IndexEqualityManager]: detected not equals via solver