/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-crafted/mapavg5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:11:51,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:11:51,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:11:51,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:11:51,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:11:51,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:11:51,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:11:51,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:11:51,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:11:51,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:11:51,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:11:51,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:11:51,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:11:51,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:11:51,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:11:51,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:11:51,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:11:51,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:11:51,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:11:51,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:11:51,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:11:51,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:11:51,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:11:51,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:11:51,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:11:51,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:11:51,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:11:51,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:11:51,702 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 20:11:51,731 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:11:51,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:11:51,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:11:51,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:11:51,733 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:11:51,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:11:51,734 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:11:51,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:11:51,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:11:51,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:11:51,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:11:51,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:11:51,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:11:51,739 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:11:51,739 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:11:51,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:11:51,740 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:11:51,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:11:51,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:11:51,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:11:51,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:11:51,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:11:51,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:11:51,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:11:51,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:11:51,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:11:51,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:11:51,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:11:51,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:11:51,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:11:52,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:11:52,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:11:52,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:11:52,050 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:11:52,051 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:11:52,051 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg5.i [2019-11-23 20:11:52,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10877a86e/208ce577b14a406ca44a5200cfc0f1a8/FLAG28f7f2b3a [2019-11-23 20:11:52,544 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:11:52,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i [2019-11-23 20:11:52,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10877a86e/208ce577b14a406ca44a5200cfc0f1a8/FLAG28f7f2b3a [2019-11-23 20:11:52,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10877a86e/208ce577b14a406ca44a5200cfc0f1a8 [2019-11-23 20:11:52,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:11:52,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:11:52,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:11:52,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:11:52,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:11:52,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:11:52" (1/1) ... [2019-11-23 20:11:52,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7954cf6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:52, skipping insertion in model container [2019-11-23 20:11:52,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:11:52" (1/1) ... [2019-11-23 20:11:52,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:11:53,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:11:53,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:11:53,234 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:11:53,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:11:53,379 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:11:53,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53 WrapperNode [2019-11-23 20:11:53,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:11:53,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:11:53,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:11:53,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:11:53,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:11:53,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:11:53,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:11:53,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:11:53,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (1/1) ... [2019-11-23 20:11:53,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:11:53,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:11:53,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:11:53,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:11:53,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (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 20:11:53,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:11:53,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:11:53,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:11:53,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:11:53,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 20:11:53,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 20:11:53,909 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:11:53,910 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 20:11:53,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:11:53 BoogieIcfgContainer [2019-11-23 20:11:53,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:11:53,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:11:53,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:11:53,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:11:53,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:11:52" (1/3) ... [2019-11-23 20:11:53,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a96e0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:11:53, skipping insertion in model container [2019-11-23 20:11:53,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:53" (2/3) ... [2019-11-23 20:11:53,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a96e0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:11:53, skipping insertion in model container [2019-11-23 20:11:53,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:11:53" (3/3) ... [2019-11-23 20:11:53,919 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg5.i [2019-11-23 20:11:53,931 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:11:53,938 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 20:11:53,949 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 20:11:53,980 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:11:53,981 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:11:53,981 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:11:53,981 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:11:53,981 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:11:53,981 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:11:53,981 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:11:53,981 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:11:53,997 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-23 20:11:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 20:11:54,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:11:54,006 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:11:54,007 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:11:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:11:54,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1563818866, now seen corresponding path program 1 times [2019-11-23 20:11:54,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:11:54,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950664282] [2019-11-23 20:11:54,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:11:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:11:54,141 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 20:11:54,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950664282] [2019-11-23 20:11:54,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:11:54,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 20:11:54,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537586686] [2019-11-23 20:11:54,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 20:11:54,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:11:54,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 20:11:54,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 20:11:54,167 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-11-23 20:11:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:11:54,187 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2019-11-23 20:11:54,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 20:11:54,189 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-23 20:11:54,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:11:54,199 INFO L225 Difference]: With dead ends: 53 [2019-11-23 20:11:54,199 INFO L226 Difference]: Without dead ends: 24 [2019-11-23 20:11:54,202 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 20:11:54,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-23 20:11:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-23 20:11:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-23 20:11:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-23 20:11:54,238 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2019-11-23 20:11:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:11:54,238 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-23 20:11:54,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 20:11:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-23 20:11:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 20:11:54,240 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:11:54,240 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:11:54,241 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:11:54,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:11:54,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2019-11-23 20:11:54,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:11:54,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844804081] [2019-11-23 20:11:54,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:11:54,266 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 20:11:54,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344129327] [2019-11-23 20:11:54,267 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 20:11:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:11:54,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 20:11:54,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:11:54,390 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 20:11:54,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844804081] [2019-11-23 20:11:54,392 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 20:11:54,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344129327] [2019-11-23 20:11:54,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:11:54,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:11:54,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693300435] [2019-11-23 20:11:54,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:11:54,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:11:54,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:11:54,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:11:54,396 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-11-23 20:11:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:11:54,470 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2019-11-23 20:11:54,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:11:54,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-23 20:11:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:11:54,472 INFO L225 Difference]: With dead ends: 45 [2019-11-23 20:11:54,472 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 20:11:54,473 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 20:11:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 20:11:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-23 20:11:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-23 20:11:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-11-23 20:11:54,479 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2019-11-23 20:11:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:11:54,480 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-11-23 20:11:54,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:11:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-23 20:11:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-23 20:11:54,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:11:54,481 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:11:54,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:11:54,685 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:11:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:11:54,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2143387046, now seen corresponding path program 1 times [2019-11-23 20:11:54,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:11:54,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115133034] [2019-11-23 20:11:54,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:11:54,724 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 20:11:54,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94164659] [2019-11-23 20:11:54,725 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 20:11:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:11:54,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 20:11:54,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:11:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:11:54,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115133034] [2019-11-23 20:11:54,848 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 20:11:54,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94164659] [2019-11-23 20:11:54,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 20:11:54,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-23 20:11:54,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622908927] [2019-11-23 20:11:54,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:11:54,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:11:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:11:54,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:11:54,852 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2019-11-23 20:11:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:11:55,272 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2019-11-23 20:11:55,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:11:55,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-11-23 20:11:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:11:55,274 INFO L225 Difference]: With dead ends: 47 [2019-11-23 20:11:55,274 INFO L226 Difference]: Without dead ends: 28 [2019-11-23 20:11:55,275 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 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 20:11:55,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-23 20:11:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-23 20:11:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-23 20:11:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-11-23 20:11:55,281 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 20 [2019-11-23 20:11:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:11:55,281 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-23 20:11:55,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:11:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-11-23 20:11:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-23 20:11:55,282 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:11:55,282 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:11:55,485 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:11:55,486 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:11:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:11:55,487 INFO L82 PathProgramCache]: Analyzing trace with hash -524663612, now seen corresponding path program 2 times [2019-11-23 20:11:55,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:11:55,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54234346] [2019-11-23 20:11:55,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:11:55,505 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 20:11:55,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536408665] [2019-11-23 20:11:55,506 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 20:11:55,581 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-23 20:11:55,582 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:11:55,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 20:11:55,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:11:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:11:55,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54234346] [2019-11-23 20:11:55,606 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 20:11:55,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536408665] [2019-11-23 20:11:55,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:11:55,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:11:55,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481231727] [2019-11-23 20:11:55,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:11:55,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:11:55,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:11:55,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:11:55,609 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2019-11-23 20:11:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:11:55,689 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-11-23 20:11:55,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:11:55,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-11-23 20:11:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:11:55,691 INFO L225 Difference]: With dead ends: 49 [2019-11-23 20:11:55,691 INFO L226 Difference]: Without dead ends: 33 [2019-11-23 20:11:55,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 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 20:11:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-23 20:11:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-11-23 20:11:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-23 20:11:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-23 20:11:55,698 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2019-11-23 20:11:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:11:55,698 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-23 20:11:55,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:11:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-23 20:11:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 20:11:55,700 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:11:55,700 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:11:55,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:11:55,901 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:11:55,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:11:55,902 INFO L82 PathProgramCache]: Analyzing trace with hash -187943454, now seen corresponding path program 1 times [2019-11-23 20:11:55,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:11:55,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984658899] [2019-11-23 20:11:55,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:11:55,919 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 20:11:55,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034768562] [2019-11-23 20:11:55,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 20:11:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:11:55,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 20:11:55,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:11:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 20:11:56,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984658899] [2019-11-23 20:11:56,013 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 20:11:56,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034768562] [2019-11-23 20:11:56,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 20:11:56,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 20:11:56,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352963719] [2019-11-23 20:11:56,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 20:11:56,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:11:56,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 20:11:56,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:11:56,015 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2019-11-23 20:11:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:11:56,143 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2019-11-23 20:11:56,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 20:11:56,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-11-23 20:11:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:11:56,146 INFO L225 Difference]: With dead ends: 57 [2019-11-23 20:11:56,146 INFO L226 Difference]: Without dead ends: 39 [2019-11-23 20:11:56,147 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:11:56,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-23 20:11:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2019-11-23 20:11:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-23 20:11:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-23 20:11:56,160 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 28 [2019-11-23 20:11:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:11:56,160 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-23 20:11:56,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 20:11:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-11-23 20:11:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-23 20:11:56,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:11:56,167 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:11:56,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:11:56,369 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:11:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:11:56,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1916598400, now seen corresponding path program 2 times [2019-11-23 20:11:56,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:11:56,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798398823] [2019-11-23 20:11:56,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:11:56,400 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 20:11:56,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229268223] [2019-11-23 20:11:56,400 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 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 20:11:56,444 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-23 20:11:56,444 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:11:56,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 20:11:56,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:11:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-23 20:11:56,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798398823] [2019-11-23 20:11:56,470 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 20:11:56,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229268223] [2019-11-23 20:11:56,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:11:56,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:11:56,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660551306] [2019-11-23 20:11:56,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:11:56,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:11:56,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:11:56,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:11:56,472 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2019-11-23 20:11:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:11:56,528 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2019-11-23 20:11:56,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:11:56,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-11-23 20:11:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:11:56,530 INFO L225 Difference]: With dead ends: 49 [2019-11-23 20:11:56,530 INFO L226 Difference]: Without dead ends: 38 [2019-11-23 20:11:56,530 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 20:11:56,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-23 20:11:56,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-11-23 20:11:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-23 20:11:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-23 20:11:56,537 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 34 [2019-11-23 20:11:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:11:56,538 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-23 20:11:56,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:11:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-11-23 20:11:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-23 20:11:56,539 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:11:56,539 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:11:56,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:11:56,740 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:11:56,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:11:56,741 INFO L82 PathProgramCache]: Analyzing trace with hash 509646686, now seen corresponding path program 1 times [2019-11-23 20:11:56,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:11:56,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197242750] [2019-11-23 20:11:56,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:11:56,759 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 20:11:56,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335768783] [2019-11-23 20:11:56,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 20:11:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:11:56,814 WARN L253 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 86 conjunts are in the unsatisfiable core [2019-11-23 20:11:56,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:11:56,884 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 20:11:56,885 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:11:56,896 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:11:56,897 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:11:56,897 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:10 [2019-11-23 20:12:00,745 WARN L192 SmtUtils]: Spent 3.62 s on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-11-23 20:12:00,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,760 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:00,807 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:00,816 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 78 [2019-11-23 20:12:00,818 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:00,838 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:00,844 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 78 [2019-11-23 20:12:00,846 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:00,866 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:00,871 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 76 [2019-11-23 20:12:00,873 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:00,896 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:00,905 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 87 [2019-11-23 20:12:00,907 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:00,928 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:00,935 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 80 [2019-11-23 20:12:00,937 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:00,971 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:00,980 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 76 [2019-11-23 20:12:00,981 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:01,007 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:01,018 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 89 [2019-11-23 20:12:01,020 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:01,043 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:01,053 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 89 [2019-11-23 20:12:01,055 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:01,074 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:01,081 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 87 [2019-11-23 20:12:01,083 INFO L496 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:01,117 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:01,124 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 78 [2019-11-23 20:12:01,126 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:01,159 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:01,170 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 80 [2019-11-23 20:12:01,172 INFO L496 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:01,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:01,187 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 78 [2019-11-23 20:12:01,189 INFO L496 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:02,254 WARN L192 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-11-23 20:12:02,255 INFO L567 ElimStorePlain]: treesize reduction 780, result has 40.2 percent of original size [2019-11-23 20:12:02,256 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2019-11-23 20:12:02,256 INFO L221 ElimStorePlain]: Needed 13 recursive calls to eliminate 1 variables, input treesize:1617, output treesize:525 [2019-11-23 20:12:02,608 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-11-23 20:12:03,045 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-23 20:12:03,481 WARN L192 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-23 20:12:03,780 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-11-23 20:12:03,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-23 20:12:05,400 WARN L192 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-11-23 20:12:06,343 WARN L192 SmtUtils]: Spent 893.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-23 20:12:06,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-23 20:12:06,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:06,413 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,419 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 69 [2019-11-23 20:12:06,421 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,441 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,448 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 77 [2019-11-23 20:12:06,450 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,464 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,471 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 85 [2019-11-23 20:12:06,473 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,486 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,491 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 94 [2019-11-23 20:12:06,493 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,523 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,530 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 96 [2019-11-23 20:12:06,532 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,546 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,552 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 77 [2019-11-23 20:12:06,554 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,568 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,575 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 77 [2019-11-23 20:12:06,576 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,598 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 67 [2019-11-23 20:12:06,599 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,618 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,625 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 79 [2019-11-23 20:12:06,627 INFO L496 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,653 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 94 [2019-11-23 20:12:06,655 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,673 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,679 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 73 [2019-11-23 20:12:06,680 INFO L496 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,699 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,706 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 98 [2019-11-23 20:12:06,708 INFO L496 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,727 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,734 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 96 [2019-11-23 20:12:06,735 INFO L496 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,754 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,761 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 77 [2019-11-23 20:12:06,762 INFO L496 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,783 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,803 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 96 [2019-11-23 20:12:06,805 INFO L496 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,828 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 71 [2019-11-23 20:12:06,830 INFO L496 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,848 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,856 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 98 [2019-11-23 20:12:06,857 INFO L496 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,882 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 84 [2019-11-23 20:12:06,884 INFO L496 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,903 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,911 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 94 [2019-11-23 20:12:06,913 INFO L496 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,932 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,940 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 96 [2019-11-23 20:12:06,944 INFO L496 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,967 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:06,974 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 85 [2019-11-23 20:12:06,975 INFO L496 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:06,996 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:07,001 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 65 [2019-11-23 20:12:07,002 INFO L496 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:07,016 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:07,021 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 80 [2019-11-23 20:12:07,022 INFO L496 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:07,036 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:07,040 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 79 [2019-11-23 20:12:07,041 INFO L496 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:07,055 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:07,058 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 85 [2019-11-23 20:12:07,059 INFO L496 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:07,072 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:07,073 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 94 [2019-11-23 20:12:07,074 INFO L496 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:08,409 WARN L192 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2019-11-23 20:12:08,410 INFO L567 ElimStorePlain]: treesize reduction 2192, result has 19.2 percent of original size [2019-11-23 20:12:08,410 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2019-11-23 20:12:08,411 INFO L221 ElimStorePlain]: Needed 27 recursive calls to eliminate 1 variables, input treesize:3787, output treesize:521 [2019-11-23 20:12:09,112 WARN L192 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-11-23 20:12:09,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-23 20:12:09,151 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:09,152 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:09,171 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 76 [2019-11-23 20:12:09,172 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:09,185 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:09,186 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:09,211 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 78 [2019-11-23 20:12:09,212 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:09,225 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:09,226 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:09,434 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 93 [2019-11-23 20:12:09,436 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:09,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:09,452 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:09,478 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 74 [2019-11-23 20:12:09,479 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:09,496 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:09,497 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:09,520 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 89 [2019-11-23 20:12:09,521 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:09,530 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:09,531 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:09,537 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 80 [2019-11-23 20:12:09,539 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:09,918 WARN L192 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-23 20:12:09,919 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:09,923 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2019-11-23 20:12:09,924 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:653, output treesize:697 [2019-11-23 20:12:10,778 WARN L192 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-11-23 20:12:11,269 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-23 20:12:11,864 WARN L192 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-11-23 20:12:11,902 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:11,903 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:11,905 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:11,906 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 132 treesize of output 67 [2019-11-23 20:12:11,907 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:12,343 WARN L192 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-23 20:12:12,344 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:12,357 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:12,358 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:12,360 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:12,360 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 54 [2019-11-23 20:12:12,362 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:12,799 WARN L192 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-23 20:12:12,800 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:12,813 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:12,816 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:12,816 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 56 [2019-11-23 20:12:12,817 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:13,130 WARN L192 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-11-23 20:12:13,130 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:13,141 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:13,144 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:13,146 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:13,147 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 52 [2019-11-23 20:12:13,147 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:13,468 WARN L192 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-11-23 20:12:13,468 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:13,486 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:13,487 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:13,489 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:13,489 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 58 [2019-11-23 20:12:13,490 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:13,781 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-11-23 20:12:13,782 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:13,791 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:12:13,793 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:12:13,794 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:13,794 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 71 [2019-11-23 20:12:13,796 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-23 20:12:13,944 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2019-11-23 20:12:13,945 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:12:13,945 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-2 vars, End of recursive call: and 6 xjuncts. [2019-11-23 20:12:13,946 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 12 variables, input treesize:701, output treesize:227 [2019-11-23 20:12:14,293 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2019-11-23 20:12:14,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-23 20:12:14,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,318 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,318 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,321 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,342 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,374 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,374 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:14,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:12:39,557 WARN L192 SmtUtils]: Spent 24.41 s on a formula simplification. DAG size of input: 116 DAG size of output: 54 [2019-11-23 20:12:52,595 WARN L192 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 106 [2019-11-23 20:12:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:12:52,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197242750] [2019-11-23 20:12:52,639 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 20:12:52,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335768783] [2019-11-23 20:12:52,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 20:12:52,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2019-11-23 20:12:52,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821628979] [2019-11-23 20:12:52,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-23 20:12:52,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:12:52,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-23 20:12:52,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2019-11-23 20:12:52,641 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 24 states. [2019-11-23 20:12:58,487 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-23 20:13:00,000 WARN L192 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-11-23 20:13:00,749 WARN L192 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2019-11-23 20:13:03,628 WARN L192 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2019-11-23 20:13:04,667 WARN L192 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-11-23 20:13:05,586 WARN L192 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-11-23 20:13:27,503 WARN L192 SmtUtils]: Spent 21.57 s on a formula simplification. DAG size of input: 144 DAG size of output: 77