/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:45:12,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:45:12,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:45:12,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:45:12,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:45:12,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:45:12,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:45:12,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:45:12,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:45:12,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:45:12,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:45:12,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:45:12,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:45:12,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:45:12,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:45:12,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:45:12,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:45:12,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:45:12,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:45:12,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:45:12,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:45:12,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:45:12,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:45:12,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:45:12,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:45:12,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:45:12,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:45:12,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:45:12,380 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 20:45:12,400 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:45:12,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:45:12,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:45:12,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:45:12,403 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:45:12,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:45:12,403 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:45:12,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:45:12,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:45:12,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:45:12,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:45:12,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:45:12,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:45:12,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:45:12,406 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:45:12,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:45:12,406 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:45:12,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:45:12,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:45:12,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:45:12,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:45:12,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:45:12,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:45:12,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:45:12,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:45:12,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:45:12,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:45:12,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:45:12,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:45:12,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:45:12,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:45:12,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:45:12,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:45:12,676 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:45:12,677 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:45:12,678 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2019-11-23 20:45:12,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff3df18b/1a70b99600bd4c19a4f179febce59916/FLAG9b1937d50 [2019-11-23 20:45:13,225 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:45:13,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr4.c [2019-11-23 20:45:13,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff3df18b/1a70b99600bd4c19a4f179febce59916/FLAG9b1937d50 [2019-11-23 20:45:13,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff3df18b/1a70b99600bd4c19a4f179febce59916 [2019-11-23 20:45:13,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:45:13,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:45:13,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:45:13,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:45:13,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:45:13,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:45:13" (1/1) ... [2019-11-23 20:45:13,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22537aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:13, skipping insertion in model container [2019-11-23 20:45:13,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:45:13" (1/1) ... [2019-11-23 20:45:13,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:45:13,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:45:13,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:45:13,841 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:45:14,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:45:14,020 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:45:14,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14 WrapperNode [2019-11-23 20:45:14,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:45:14,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:45:14,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:45:14,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:45:14,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:45:14,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:45:14,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:45:14,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:45:14,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (1/1) ... [2019-11-23 20:45:14,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:45:14,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:45:14,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:45:14,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:45:14,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (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 20:45:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:45:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:45:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:45:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:45:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 20:45:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 20:45:14,552 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:45:14,553 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-23 20:45:14,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:45:14 BoogieIcfgContainer [2019-11-23 20:45:14,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:45:14,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:45:14,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:45:14,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:45:14,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:45:13" (1/3) ... [2019-11-23 20:45:14,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca5211b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:45:14, skipping insertion in model container [2019-11-23 20:45:14,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:45:14" (2/3) ... [2019-11-23 20:45:14,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca5211b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:45:14, skipping insertion in model container [2019-11-23 20:45:14,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:45:14" (3/3) ... [2019-11-23 20:45:14,562 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2019-11-23 20:45:14,573 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:45:14,584 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 20:45:14,595 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 20:45:14,616 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:45:14,617 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:45:14,617 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:45:14,617 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:45:14,617 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:45:14,617 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:45:14,617 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:45:14,618 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:45:14,633 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-11-23 20:45:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 20:45:14,640 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:14,641 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:14,641 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:14,647 INFO L82 PathProgramCache]: Analyzing trace with hash 219549199, now seen corresponding path program 1 times [2019-11-23 20:45:14,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:14,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678306064] [2019-11-23 20:45:14,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:14,802 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 20:45:14,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678306064] [2019-11-23 20:45:14,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:45:14,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 20:45:14,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474723905] [2019-11-23 20:45:14,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 20:45:14,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:14,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 20:45:14,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 20:45:14,828 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-11-23 20:45:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:14,852 INFO L93 Difference]: Finished difference Result 66 states and 95 transitions. [2019-11-23 20:45:14,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 20:45:14,853 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-23 20:45:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:14,865 INFO L225 Difference]: With dead ends: 66 [2019-11-23 20:45:14,866 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 20:45:14,870 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 20:45:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 20:45:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-23 20:45:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-23 20:45:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2019-11-23 20:45:14,911 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2019-11-23 20:45:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:14,912 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2019-11-23 20:45:14,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 20:45:14,912 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2019-11-23 20:45:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 20:45:14,914 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:14,914 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:14,914 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:14,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1179538664, now seen corresponding path program 1 times [2019-11-23 20:45:14,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:14,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760475249] [2019-11-23 20:45:14,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:15,019 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 20:45:15,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760475249] [2019-11-23 20:45:15,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:45:15,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:45:15,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168153587] [2019-11-23 20:45:15,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:45:15,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:15,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:45:15,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:45:15,027 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand 4 states. [2019-11-23 20:45:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:15,110 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-11-23 20:45:15,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 20:45:15,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-23 20:45:15,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:15,112 INFO L225 Difference]: With dead ends: 41 [2019-11-23 20:45:15,112 INFO L226 Difference]: Without dead ends: 39 [2019-11-23 20:45:15,115 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:45:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-23 20:45:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2019-11-23 20:45:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-23 20:45:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2019-11-23 20:45:15,126 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 17 [2019-11-23 20:45:15,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:15,127 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2019-11-23 20:45:15,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:45:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2019-11-23 20:45:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 20:45:15,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:15,128 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:15,128 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:15,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1179598246, now seen corresponding path program 1 times [2019-11-23 20:45:15,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:15,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771404108] [2019-11-23 20:45:15,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:15,363 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 20:45:15,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771404108] [2019-11-23 20:45:15,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:45:15,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:45:15,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660578477] [2019-11-23 20:45:15,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:45:15,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:15,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:45:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:45:15,366 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 4 states. [2019-11-23 20:45:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:15,495 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2019-11-23 20:45:15,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:45:15,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-23 20:45:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:15,497 INFO L225 Difference]: With dead ends: 64 [2019-11-23 20:45:15,497 INFO L226 Difference]: Without dead ends: 38 [2019-11-23 20:45:15,498 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:45:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-23 20:45:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2019-11-23 20:45:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-23 20:45:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2019-11-23 20:45:15,510 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17 [2019-11-23 20:45:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:15,510 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2019-11-23 20:45:15,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:45:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2019-11-23 20:45:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 20:45:15,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:15,514 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:15,515 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:15,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:15,516 INFO L82 PathProgramCache]: Analyzing trace with hash -130988767, now seen corresponding path program 1 times [2019-11-23 20:45:15,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:15,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123788646] [2019-11-23 20:45:15,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 20:45:15,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123788646] [2019-11-23 20:45:15,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:45:15,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 20:45:15,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176294338] [2019-11-23 20:45:15,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 20:45:15,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:15,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 20:45:15,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:45:15,807 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 5 states. [2019-11-23 20:45:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:15,948 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2019-11-23 20:45:15,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 20:45:15,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-23 20:45:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:15,950 INFO L225 Difference]: With dead ends: 71 [2019-11-23 20:45:15,950 INFO L226 Difference]: Without dead ends: 50 [2019-11-23 20:45:15,950 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:45:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-23 20:45:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2019-11-23 20:45:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-23 20:45:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2019-11-23 20:45:15,962 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 21 [2019-11-23 20:45:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:15,963 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2019-11-23 20:45:15,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 20:45:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2019-11-23 20:45:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-23 20:45:15,965 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:15,965 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:15,965 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:15,966 INFO L82 PathProgramCache]: Analyzing trace with hash 956146768, now seen corresponding path program 1 times [2019-11-23 20:45:15,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:15,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070111463] [2019-11-23 20:45:15,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 20:45:16,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070111463] [2019-11-23 20:45:16,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:45:16,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:45:16,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256608196] [2019-11-23 20:45:16,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:45:16,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:16,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:45:16,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:45:16,069 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 3 states. [2019-11-23 20:45:16,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:16,099 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2019-11-23 20:45:16,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:45:16,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-23 20:45:16,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:16,102 INFO L225 Difference]: With dead ends: 59 [2019-11-23 20:45:16,103 INFO L226 Difference]: Without dead ends: 38 [2019-11-23 20:45:16,104 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:45:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-23 20:45:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-23 20:45:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-23 20:45:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2019-11-23 20:45:16,116 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 33 [2019-11-23 20:45:16,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:16,117 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2019-11-23 20:45:16,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:45:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2019-11-23 20:45:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-23 20:45:16,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:16,118 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:16,118 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:16,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1977215122, now seen corresponding path program 1 times [2019-11-23 20:45:16,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:16,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543441001] [2019-11-23 20:45:16,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 20:45:16,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543441001] [2019-11-23 20:45:16,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:45:16,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:45:16,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184031979] [2019-11-23 20:45:16,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:45:16,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:16,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:45:16,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:45:16,222 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 3 states. [2019-11-23 20:45:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:16,249 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2019-11-23 20:45:16,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:45:16,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-23 20:45:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:16,251 INFO L225 Difference]: With dead ends: 53 [2019-11-23 20:45:16,251 INFO L226 Difference]: Without dead ends: 38 [2019-11-23 20:45:16,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:45:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-23 20:45:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-23 20:45:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-23 20:45:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-11-23 20:45:16,261 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 33 [2019-11-23 20:45:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:16,262 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-11-23 20:45:16,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:45:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-11-23 20:45:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-23 20:45:16,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:16,263 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:16,264 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:16,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1584188112, now seen corresponding path program 1 times [2019-11-23 20:45:16,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:16,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008010588] [2019-11-23 20:45:16,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:45:17,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008010588] [2019-11-23 20:45:17,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529414494] [2019-11-23 20:45:17,526 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 20:45:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:17,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-23 20:45:17,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:45:17,694 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 16 treesize of output 12 [2019-11-23 20:45:17,694 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:17,702 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:17,703 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 20:45:17,703 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-11-23 20:45:17,762 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 74 [2019-11-23 20:45:17,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,768 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,769 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,770 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,773 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,774 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,779 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,782 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,783 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,784 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,787 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 38 [2019-11-23 20:45:17,788 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:17,795 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:17,796 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:17,802 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:17,803 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:17,803 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:99, output treesize:14 [2019-11-23 20:45:17,863 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,864 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-11-23 20:45:17,865 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:17,875 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:17,876 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 20:45:17,876 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-11-23 20:45:17,899 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 116 [2019-11-23 20:45:17,902 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,903 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,905 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,907 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,907 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,910 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,911 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,913 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,916 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,917 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,917 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,921 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,922 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,941 INFO L343 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2019-11-23 20:45:17,942 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 60 [2019-11-23 20:45:17,943 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:17,948 INFO L567 ElimStorePlain]: treesize reduction 27, result has 20.6 percent of original size [2019-11-23 20:45:17,949 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:17,954 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:17,955 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 20:45:17,955 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:14 [2019-11-23 20:45:17,976 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:17,977 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-11-23 20:45:17,978 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:17,986 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:17,986 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 20:45:17,987 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-11-23 20:45:17,999 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 116 [2019-11-23 20:45:18,001 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,002 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,003 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,007 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,015 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,016 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,020 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,025 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,026 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,027 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,028 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,048 INFO L343 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2019-11-23 20:45:18,049 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 60 [2019-11-23 20:45:18,051 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:18,056 INFO L567 ElimStorePlain]: treesize reduction 27, result has 20.6 percent of original size [2019-11-23 20:45:18,056 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:18,064 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:18,064 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 20:45:18,065 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:144, output treesize:14 [2019-11-23 20:45:18,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,072 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2019-11-23 20:45:18,072 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:18,083 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:18,083 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:18,083 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-11-23 20:45:18,120 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 126 [2019-11-23 20:45:18,128 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,129 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,130 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,131 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,132 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,134 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,136 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,139 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,140 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,141 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,144 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,145 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,147 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,148 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,149 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,150 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,151 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,152 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:18,170 INFO L343 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2019-11-23 20:45:18,171 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 75 [2019-11-23 20:45:18,173 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:18,186 INFO L567 ElimStorePlain]: treesize reduction 26, result has 43.5 percent of original size [2019-11-23 20:45:18,187 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:18,197 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:18,198 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:45:18,198 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:156, output treesize:29 [2019-11-23 20:45:18,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:45:18,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:45:18,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2019-11-23 20:45:18,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889880719] [2019-11-23 20:45:18,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-23 20:45:18,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:18,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-23 20:45:18,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2019-11-23 20:45:18,317 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 27 states. [2019-11-23 20:45:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:19,721 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2019-11-23 20:45:19,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-23 20:45:19,722 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 33 [2019-11-23 20:45:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:19,724 INFO L225 Difference]: With dead ends: 107 [2019-11-23 20:45:19,724 INFO L226 Difference]: Without dead ends: 74 [2019-11-23 20:45:19,726 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2019-11-23 20:45:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-23 20:45:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 40. [2019-11-23 20:45:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-23 20:45:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-11-23 20:45:19,733 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 33 [2019-11-23 20:45:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:19,733 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-11-23 20:45:19,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-23 20:45:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-11-23 20:45:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-23 20:45:19,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:19,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:19,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:19,937 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:19,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:19,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2128191651, now seen corresponding path program 1 times [2019-11-23 20:45:19,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:19,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504700305] [2019-11-23 20:45:19,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:20,676 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 37 [2019-11-23 20:45:20,967 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 57 [2019-11-23 20:45:21,245 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 35 [2019-11-23 20:45:21,537 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 39 [2019-11-23 20:45:21,787 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 35 [2019-11-23 20:45:22,234 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 41 [2019-11-23 20:45:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:45:22,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504700305] [2019-11-23 20:45:22,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399671102] [2019-11-23 20:45:22,705 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 20:45:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:22,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-23 20:45:22,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:45:22,815 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 16 treesize of output 12 [2019-11-23 20:45:22,815 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:22,826 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:22,826 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 20:45:22,827 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-11-23 20:45:22,866 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 60 [2019-11-23 20:45:22,868 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,869 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,870 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,870 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,871 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,872 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,874 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,876 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,878 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,879 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,880 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,881 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,882 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,883 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,885 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-11-23 20:45:22,885 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:22,887 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:22,887 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:22,892 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:22,893 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:22,893 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:85, output treesize:16 [2019-11-23 20:45:22,950 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,951 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-11-23 20:45:22,952 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:22,962 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:22,962 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 20:45:22,963 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2019-11-23 20:45:22,969 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 118 [2019-11-23 20:45:22,971 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,972 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,973 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,973 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,974 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,978 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,979 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,981 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,983 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,986 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,987 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,989 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:22,991 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,023 INFO L343 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2019-11-23 20:45:23,024 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 64 [2019-11-23 20:45:23,025 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:23,039 INFO L567 ElimStorePlain]: treesize reduction 31, result has 22.5 percent of original size [2019-11-23 20:45:23,040 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:23,047 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:23,047 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 20:45:23,047 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:146, output treesize:16 [2019-11-23 20:45:23,062 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,063 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-11-23 20:45:23,064 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:23,072 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:23,073 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:23,073 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-11-23 20:45:23,114 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 128 [2019-11-23 20:45:23,116 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,117 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,118 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,119 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,120 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,121 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,131 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,132 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,136 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,137 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,139 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,141 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,142 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,143 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,144 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,145 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,147 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,148 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:23,176 INFO L343 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2019-11-23 20:45:23,177 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 79 [2019-11-23 20:45:23,178 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:23,188 INFO L567 ElimStorePlain]: treesize reduction 30, result has 42.3 percent of original size [2019-11-23 20:45:23,189 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:23,200 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:23,201 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:45:23,201 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:158, output treesize:31 [2019-11-23 20:45:23,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 20:45:23,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:45:23,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 28 [2019-11-23 20:45:23,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379969068] [2019-11-23 20:45:23,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-23 20:45:23,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:23,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-23 20:45:23,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2019-11-23 20:45:23,392 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 28 states. [2019-11-23 20:45:24,838 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2019-11-23 20:45:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:26,405 INFO L93 Difference]: Finished difference Result 151 states and 173 transitions. [2019-11-23 20:45:26,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-23 20:45:26,406 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 39 [2019-11-23 20:45:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:26,407 INFO L225 Difference]: With dead ends: 151 [2019-11-23 20:45:26,407 INFO L226 Difference]: Without dead ends: 122 [2019-11-23 20:45:26,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=563, Invalid=2407, Unknown=0, NotChecked=0, Total=2970 [2019-11-23 20:45:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-23 20:45:26,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 46. [2019-11-23 20:45:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-23 20:45:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-11-23 20:45:26,427 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 39 [2019-11-23 20:45:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:26,429 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-11-23 20:45:26,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-23 20:45:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-11-23 20:45:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-23 20:45:26,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:26,431 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:26,636 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:26,636 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:26,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash -950694858, now seen corresponding path program 2 times [2019-11-23 20:45:26,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:26,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747306018] [2019-11-23 20:45:26,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:27,066 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 21 [2019-11-23 20:45:27,277 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2019-11-23 20:45:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:45:27,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747306018] [2019-11-23 20:45:27,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144573097] [2019-11-23 20:45:27,700 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 20:45:27,747 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:45:27,747 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:45:27,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-23 20:45:27,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:45:27,822 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 16 treesize of output 12 [2019-11-23 20:45:27,822 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:27,832 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:27,832 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 20:45:27,833 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-11-23 20:45:27,864 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 60 [2019-11-23 20:45:27,866 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,868 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,869 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,870 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,871 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,872 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,874 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,876 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,879 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,882 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,882 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,883 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,884 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,884 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,886 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-11-23 20:45:27,887 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:27,888 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:27,889 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:27,893 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:27,893 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:27,893 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:85, output treesize:16 [2019-11-23 20:45:27,957 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:27,958 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-11-23 20:45:27,958 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:27,967 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:27,968 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:27,968 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-11-23 20:45:28,006 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 128 [2019-11-23 20:45:28,012 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,013 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,015 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,016 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,017 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,018 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,019 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,023 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,024 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,025 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,028 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,029 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,030 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,031 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,032 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,033 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,035 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,036 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,037 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:28,059 INFO L343 Elim1Store]: treesize reduction 26, result has 54.4 percent of original size [2019-11-23 20:45:28,060 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 85 [2019-11-23 20:45:28,061 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:28,071 INFO L567 ElimStorePlain]: treesize reduction 30, result has 42.3 percent of original size [2019-11-23 20:45:28,071 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:28,082 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:28,083 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:45:28,083 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:158, output treesize:31 [2019-11-23 20:45:28,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 20:45:28,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:45:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 31 [2019-11-23 20:45:28,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528506660] [2019-11-23 20:45:28,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-23 20:45:28,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-23 20:45:28,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2019-11-23 20:45:28,279 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 31 states. [2019-11-23 20:45:31,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:31,600 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2019-11-23 20:45:31,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-23 20:45:31,601 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 45 [2019-11-23 20:45:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:31,603 INFO L225 Difference]: With dead ends: 164 [2019-11-23 20:45:31,603 INFO L226 Difference]: Without dead ends: 141 [2019-11-23 20:45:31,605 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=913, Invalid=3643, Unknown=0, NotChecked=0, Total=4556 [2019-11-23 20:45:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-23 20:45:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 82. [2019-11-23 20:45:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-23 20:45:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2019-11-23 20:45:31,617 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 45 [2019-11-23 20:45:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:31,617 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2019-11-23 20:45:31,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-23 20:45:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2019-11-23 20:45:31,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-23 20:45:31,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:31,619 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:31,821 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:31,822 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:31,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:31,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1076444553, now seen corresponding path program 3 times [2019-11-23 20:45:31,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:31,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789741187] [2019-11-23 20:45:31,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:45:32,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789741187] [2019-11-23 20:45:32,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765172849] [2019-11-23 20:45:32,391 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:32,441 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-23 20:45:32,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:45:32,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-23 20:45:32,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:45:32,508 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 16 treesize of output 12 [2019-11-23 20:45:32,508 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:32,516 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:32,516 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:32,516 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-23 20:45:32,550 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 60 [2019-11-23 20:45:32,552 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,553 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,554 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,555 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,556 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,557 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,559 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,560 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,561 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,562 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,563 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,586 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,588 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,589 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:32,590 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2019-11-23 20:45:32,591 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:32,601 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:32,601 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:32,605 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:32,605 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:32,605 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:82, output treesize:13 [2019-11-23 20:45:32,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 20:45:32,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:45:32,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 28 [2019-11-23 20:45:32,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381771532] [2019-11-23 20:45:32,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-23 20:45:32,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:32,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-23 20:45:32,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2019-11-23 20:45:32,769 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 28 states. [2019-11-23 20:45:34,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:34,931 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2019-11-23 20:45:34,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-23 20:45:34,932 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 51 [2019-11-23 20:45:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:34,934 INFO L225 Difference]: With dead ends: 176 [2019-11-23 20:45:34,934 INFO L226 Difference]: Without dead ends: 174 [2019-11-23 20:45:34,937 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1071, Invalid=4185, Unknown=0, NotChecked=0, Total=5256 [2019-11-23 20:45:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-11-23 20:45:34,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 88. [2019-11-23 20:45:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-23 20:45:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2019-11-23 20:45:34,949 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 51 [2019-11-23 20:45:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:34,949 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2019-11-23 20:45:34,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-23 20:45:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2019-11-23 20:45:34,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-23 20:45:34,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:34,951 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:35,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:35,156 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:35,156 INFO L82 PathProgramCache]: Analyzing trace with hash -463903588, now seen corresponding path program 4 times [2019-11-23 20:45:35,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:35,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173142554] [2019-11-23 20:45:35,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 20:45:35,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173142554] [2019-11-23 20:45:35,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132092208] [2019-11-23 20:45:35,590 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:35,638 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 20:45:35,638 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:45:35,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-23 20:45:35,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:45:35,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 20:45:35,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:35,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 20:45:35,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:45:35,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-11-23 20:45:35,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029809749] [2019-11-23 20:45:35,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-23 20:45:35,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:35,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-23 20:45:35,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2019-11-23 20:45:35,900 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand 20 states. [2019-11-23 20:45:36,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:36,269 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2019-11-23 20:45:36,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 20:45:36,269 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2019-11-23 20:45:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:36,270 INFO L225 Difference]: With dead ends: 176 [2019-11-23 20:45:36,270 INFO L226 Difference]: Without dead ends: 85 [2019-11-23 20:45:36,271 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2019-11-23 20:45:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-23 20:45:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2019-11-23 20:45:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-23 20:45:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2019-11-23 20:45:36,283 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 57 [2019-11-23 20:45:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:36,283 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2019-11-23 20:45:36,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-23 20:45:36,283 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2019-11-23 20:45:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-23 20:45:36,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:36,287 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:36,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:36,488 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:36,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2120029463, now seen corresponding path program 5 times [2019-11-23 20:45:36,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:36,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717490641] [2019-11-23 20:45:36,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-11-23 20:45:36,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717490641] [2019-11-23 20:45:36,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015184073] [2019-11-23 20:45:36,702 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:36,779 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-11-23 20:45:36,780 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:45:36,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 20:45:36,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:45:36,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-11-23 20:45:36,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:45:36,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-11-23 20:45:36,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259252034] [2019-11-23 20:45:36,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 20:45:36,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:36,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 20:45:36,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-11-23 20:45:36,857 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 13 states. [2019-11-23 20:45:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:45:37,194 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2019-11-23 20:45:37,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-23 20:45:37,194 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2019-11-23 20:45:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:45:37,195 INFO L225 Difference]: With dead ends: 126 [2019-11-23 20:45:37,195 INFO L226 Difference]: Without dead ends: 83 [2019-11-23 20:45:37,196 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-23 20:45:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-23 20:45:37,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2019-11-23 20:45:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-11-23 20:45:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2019-11-23 20:45:37,203 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 61 [2019-11-23 20:45:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:45:37,204 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2019-11-23 20:45:37,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 20:45:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2019-11-23 20:45:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-23 20:45:37,205 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:45:37,205 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:45:37,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:37,409 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:45:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:45:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash 969927878, now seen corresponding path program 6 times [2019-11-23 20:45:37,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:45:37,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346512269] [2019-11-23 20:45:37,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:45:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:45:37,993 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2019-11-23 20:45:38,217 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2019-11-23 20:45:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:45:39,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346512269] [2019-11-23 20:45:39,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500724950] [2019-11-23 20:45:39,272 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:45:39,336 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-23 20:45:39,336 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:45:39,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-23 20:45:39,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:45:39,404 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 16 treesize of output 12 [2019-11-23 20:45:39,404 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,410 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:39,411 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,411 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-23 20:45:39,445 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 121 [2019-11-23 20:45:39,447 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,448 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,449 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,449 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,450 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,453 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,453 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,454 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,456 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,457 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,457 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,458 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,459 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,460 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,461 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 52 [2019-11-23 20:45:39,462 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,463 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:39,463 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,475 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:39,475 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,475 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:149, output treesize:22 [2019-11-23 20:45:39,514 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,514 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-11-23 20:45:39,515 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,524 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:39,525 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,525 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-11-23 20:45:39,562 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 128 [2019-11-23 20:45:39,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,567 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,568 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,569 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,570 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,571 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,572 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,574 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,575 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,578 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,579 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,580 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,583 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,584 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,585 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,586 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,588 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,589 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,590 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,591 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,592 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,593 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:45:39,596 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2019-11-23 20:45:39,597 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,603 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:39,604 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:45:39,612 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:45:39,613 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:45:39,613 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:158, output treesize:31 [2019-11-23 20:45:40,020 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-23 20:45:40,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:40,486 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-23 20:45:40,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:45:40,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 35 [2019-11-23 20:45:40,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906443939] [2019-11-23 20:45:40,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-23 20:45:40,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:40,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-23 20:45:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2019-11-23 20:45:40,488 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 35 states. [2019-11-23 20:45:45,860 WARN L192 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2019-11-23 20:45:46,396 WARN L192 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2019-11-23 20:45:47,217 WARN L192 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2019-11-23 20:45:48,793 WARN L192 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2019-11-23 20:45:49,633 WARN L192 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2019-11-23 20:45:50,307 WARN L192 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2019-11-23 20:45:51,221 WARN L192 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-11-23 20:45:52,060 WARN L192 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2019-11-23 20:45:53,095 WARN L192 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2019-11-23 20:45:53,861 WARN L192 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-23 20:45:54,622 WARN L192 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2019-11-23 20:45:55,285 WARN L192 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2019-11-23 20:45:56,336 WARN L192 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2019-11-23 20:45:56,748 WARN L192 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 42 [2019-11-23 20:45:57,940 WARN L192 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2019-11-23 20:45:58,837 WARN L192 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-11-23 20:46:00,436 WARN L192 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2019-11-23 20:46:01,256 WARN L192 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2019-11-23 20:46:02,002 WARN L192 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-11-23 20:46:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:46:02,007 INFO L93 Difference]: Finished difference Result 249 states and 274 transitions. [2019-11-23 20:46:02,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-11-23 20:46:02,007 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 73 [2019-11-23 20:46:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:46:02,008 INFO L225 Difference]: With dead ends: 249 [2019-11-23 20:46:02,009 INFO L226 Difference]: Without dead ends: 214 [2019-11-23 20:46:02,011 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2067 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=1097, Invalid=6904, Unknown=9, NotChecked=0, Total=8010 [2019-11-23 20:46:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-11-23 20:46:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 122. [2019-11-23 20:46:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-11-23 20:46:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2019-11-23 20:46:02,023 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 73 [2019-11-23 20:46:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:46:02,024 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2019-11-23 20:46:02,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-23 20:46:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2019-11-23 20:46:02,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-23 20:46:02,025 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:46:02,025 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:46:02,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:46:02,229 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:46:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:46:02,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1241558487, now seen corresponding path program 7 times [2019-11-23 20:46:02,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:46:02,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108812233] [2019-11-23 20:46:02,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:46:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:46:02,852 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 27 [2019-11-23 20:46:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:46:04,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108812233] [2019-11-23 20:46:04,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140388368] [2019-11-23 20:46:04,630 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:46:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:46:04,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-23 20:46:04,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:46:04,809 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 16 treesize of output 12 [2019-11-23 20:46:04,809 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:04,820 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:04,820 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 20:46:04,820 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-11-23 20:46:04,869 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 76 [2019-11-23 20:46:04,870 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,871 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,872 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,873 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,874 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,877 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,878 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,879 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,882 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,883 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,884 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,885 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,886 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,887 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,889 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2019-11-23 20:46:04,889 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:04,891 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:04,892 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:04,897 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:04,897 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:04,898 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:101, output treesize:16 [2019-11-23 20:46:04,987 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:04,987 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2019-11-23 20:46:04,988 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:04,999 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:04,999 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:04,999 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-11-23 20:46:05,065 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 128 [2019-11-23 20:46:05,067 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,068 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,069 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,069 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,070 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,072 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,073 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,075 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,077 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,078 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,082 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,083 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,084 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,085 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,087 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,088 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,089 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,090 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,091 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,100 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,101 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2019-11-23 20:46:05,102 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:05,111 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:05,112 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:05,123 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:05,124 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:05,124 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:158, output treesize:31 [2019-11-23 20:46:05,179 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,180 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,181 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,182 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:05,183 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2019-11-23 20:46:05,183 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:05,194 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:05,194 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:05,195 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2019-11-23 20:46:05,263 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 132 [2019-11-23 20:46:05,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,266 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,268 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,270 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,271 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,272 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,273 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,274 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,275 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,277 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,280 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,282 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,284 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,293 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,299 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,300 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,303 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,304 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,306 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:05,327 INFO L343 Elim1Store]: treesize reduction 26, result has 54.4 percent of original size [2019-11-23 20:46:05,328 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 94 [2019-11-23 20:46:05,329 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:05,343 INFO L567 ElimStorePlain]: treesize reduction 30, result has 48.3 percent of original size [2019-11-23 20:46:05,343 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:05,355 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:05,355 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:46:05,356 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:164, output treesize:37 [2019-11-23 20:46:06,673 WARN L192 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-11-23 20:46:06,685 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,686 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,686 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,687 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,688 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,689 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,690 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:06,690 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2019-11-23 20:46:06,691 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:06,704 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:06,705 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:46:06,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:52 [2019-11-23 20:46:06,785 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 142 [2019-11-23 20:46:06,787 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,788 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,789 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,790 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,792 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,793 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,794 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,795 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,796 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,797 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,798 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,799 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,800 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,802 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,803 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,804 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,805 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,806 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,807 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,808 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,809 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:46:06,812 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,815 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,820 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,820 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,821 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,824 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,825 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,826 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,827 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,829 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,830 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,831 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,832 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,833 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,834 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,835 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,836 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,837 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:06,838 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 20:46:06,841 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 79 [2019-11-23 20:46:06,841 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:06,848 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:06,848 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:06,863 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:06,864 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:46:06,865 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:179, output treesize:55 [2019-11-23 20:46:07,120 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-11-23 20:46:07,130 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,132 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,134 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,136 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,137 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,138 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,139 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:07,140 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2019-11-23 20:46:07,141 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:07,157 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:07,157 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 20:46:07,158 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:61 [2019-11-23 20:46:07,240 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 149 [2019-11-23 20:46:07,248 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,249 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,250 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,251 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,251 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,252 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,253 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,254 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,255 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,256 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,257 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,258 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,258 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,259 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,260 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,260 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,261 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,262 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,263 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,264 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,265 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,267 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,269 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,270 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,271 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,272 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,274 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,275 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,278 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,280 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,286 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,287 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,288 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,289 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,293 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,294 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,296 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,297 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,298 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,300 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,303 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,304 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,305 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,306 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,307 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,308 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,309 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,310 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,311 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:46:07,377 INFO L343 Elim1Store]: treesize reduction 67, result has 47.7 percent of original size [2019-11-23 20:46:07,378 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 26 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 89 treesize of output 139 [2019-11-23 20:46:07,379 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 20:46:07,401 INFO L567 ElimStorePlain]: treesize reduction 66, result has 42.6 percent of original size [2019-11-23 20:46:07,402 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:46:07,419 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:46:07,419 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-23 20:46:07,420 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:188, output treesize:61 [2019-11-23 20:46:08,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:46:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-23 20:46:08,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:46:08,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24] total 51 [2019-11-23 20:46:08,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74831265] [2019-11-23 20:46:08,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 51 states [2019-11-23 20:46:08,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:46:08,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2019-11-23 20:46:08,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2285, Unknown=1, NotChecked=0, Total=2550 [2019-11-23 20:46:08,474 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 51 states. [2019-11-23 20:46:11,631 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 42 [2019-11-23 20:46:16,927 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 45 [2019-11-23 20:46:20,391 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2019-11-23 20:46:23,921 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2019-11-23 20:46:27,827 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2019-11-23 20:46:32,430 WARN L192 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2019-11-23 20:46:35,830 WARN L192 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-11-23 20:46:36,043 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 57 [2019-11-23 20:46:36,637 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2019-11-23 20:46:37,604 WARN L192 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2019-11-23 20:46:38,548 WARN L192 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-11-23 20:46:40,214 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2019-11-23 20:46:40,616 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 56 [2019-11-23 20:46:41,505 WARN L192 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2019-11-23 20:46:41,715 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 57 [2019-11-23 20:46:42,279 WARN L192 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2019-11-23 20:46:42,643 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 49 [2019-11-23 20:46:43,642 WARN L192 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-11-23 20:46:44,538 WARN L192 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2019-11-23 20:46:44,893 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 60 [2019-11-23 20:46:45,184 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2019-11-23 20:46:45,511 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2019-11-23 20:46:45,969 WARN L192 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2019-11-23 20:46:46,242 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2019-11-23 20:46:46,590 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2019-11-23 20:46:47,057 WARN L192 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 43 [2019-11-23 20:46:47,304 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2019-11-23 20:46:47,846 WARN L192 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2019-11-23 20:46:48,794 WARN L192 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-11-23 20:46:50,105 WARN L192 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2019-11-23 20:46:50,816 WARN L192 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-11-23 20:46:52,282 WARN L192 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2019-11-23 20:46:52,711 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41