/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/mbpr2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:44:43,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:44:43,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:44:43,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:44:43,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:44:43,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:44:43,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:44:43,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:44:43,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:44:43,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:44:43,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:44:43,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:44:43,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:44:43,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:44:43,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:44:43,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:44:43,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:44:43,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:44:43,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:44:43,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:44:43,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:44:43,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:44:43,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:44:43,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:44:43,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:44:43,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:44:43,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:44:43,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:44:43,263 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 20:44:43,277 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:44:43,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:44:43,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:44:43,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:44:43,278 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:44:43,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:44:43,279 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:44:43,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:44:43,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:44:43,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:44:43,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:44:43,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:44:43,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:44:43,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:44:43,280 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:44:43,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:44:43,280 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:44:43,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:44:43,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:44:43,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:44:43,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:44:43,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:44:43,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:44:43,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:44:43,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:44:43,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:44:43,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:44:43,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:44:43,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:44:43,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:44:43,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:44:43,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:44:43,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:44:43,591 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:44:43,591 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:44:43,592 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr2.c [2019-11-23 20:44:43,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff06553d0/6b918981ba23409c931c2bbcbf14cd8d/FLAG0b62cf9c7 [2019-11-23 20:44:44,109 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:44:44,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr2.c [2019-11-23 20:44:44,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff06553d0/6b918981ba23409c931c2bbcbf14cd8d/FLAG0b62cf9c7 [2019-11-23 20:44:44,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff06553d0/6b918981ba23409c931c2bbcbf14cd8d [2019-11-23 20:44:44,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:44:44,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:44:44,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:44:44,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:44:44,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:44:44,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c891e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44, skipping insertion in model container [2019-11-23 20:44:44,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:44:44,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:44:44,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:44:44,791 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:44:44,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:44:44,834 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:44:44,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44 WrapperNode [2019-11-23 20:44:44,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:44:44,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:44:44,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:44:44,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:44:44,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:44:44,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:44:44,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:44:44,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:44:44,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... [2019-11-23 20:44:44,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:44:44,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:44:44,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:44:44,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:44:44,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:44:45,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:44:45,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:44:45,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:44:45,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:44:45,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 20:44:45,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 20:44:45,357 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:44:45,357 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 20:44:45,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:44:45 BoogieIcfgContainer [2019-11-23 20:44:45,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:44:45,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:44:45,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:44:45,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:44:45,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:44:44" (1/3) ... [2019-11-23 20:44:45,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd5f393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:44:45, skipping insertion in model container [2019-11-23 20:44:45,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:44:44" (2/3) ... [2019-11-23 20:44:45,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd5f393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:44:45, skipping insertion in model container [2019-11-23 20:44:45,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:44:45" (3/3) ... [2019-11-23 20:44:45,368 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr2.c [2019-11-23 20:44:45,377 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:44:45,383 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 20:44:45,394 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 20:44:45,415 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:44:45,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:44:45,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:44:45,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:44:45,416 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:44:45,416 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:44:45,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:44:45,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:44:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-23 20:44:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 20:44:45,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:44:45,433 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:44:45,433 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:44:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:44:45,439 INFO L82 PathProgramCache]: Analyzing trace with hash -297663993, now seen corresponding path program 1 times [2019-11-23 20:44:45,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:44:45,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899713078] [2019-11-23 20:44:45,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:44:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:45,582 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 20:44:45,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899713078] [2019-11-23 20:44:45,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:44:45,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 20:44:45,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416437362] [2019-11-23 20:44:45,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 20:44:45,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:44:45,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 20:44:45,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 20:44:45,600 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-11-23 20:44:45,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:44:45,619 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2019-11-23 20:44:45,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 20:44:45,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-23 20:44:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:44:45,631 INFO L225 Difference]: With dead ends: 46 [2019-11-23 20:44:45,631 INFO L226 Difference]: Without dead ends: 22 [2019-11-23 20:44:45,635 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 20:44:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-23 20:44:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-23 20:44:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 20:44:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-23 20:44:45,672 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2019-11-23 20:44:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:44:45,673 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-23 20:44:45,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 20:44:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-23 20:44:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 20:44:45,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:44:45,674 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:44:45,675 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:44:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:44:45,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1049690042, now seen corresponding path program 1 times [2019-11-23 20:44:45,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:44:45,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87664994] [2019-11-23 20:44:45,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:44:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:45,816 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 20:44:45,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87664994] [2019-11-23 20:44:45,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:44:45,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:44:45,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158090259] [2019-11-23 20:44:45,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:44:45,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:44:45,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:44:45,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:44:45,823 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2019-11-23 20:44:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:44:45,958 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-11-23 20:44:45,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:44:45,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-23 20:44:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:44:45,960 INFO L225 Difference]: With dead ends: 44 [2019-11-23 20:44:45,961 INFO L226 Difference]: Without dead ends: 30 [2019-11-23 20:44:45,962 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:44:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-23 20:44:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2019-11-23 20:44:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-23 20:44:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-11-23 20:44:45,974 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 13 [2019-11-23 20:44:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:44:45,975 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-23 20:44:45,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:44:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-11-23 20:44:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 20:44:45,976 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:44:45,976 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 20:44:45,976 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:44:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:44:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2028678864, now seen corresponding path program 1 times [2019-11-23 20:44:45,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:44:45,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225554906] [2019-11-23 20:44:45,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:44:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 20:44:46,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225554906] [2019-11-23 20:44:46,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:44:46,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:44:46,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130601810] [2019-11-23 20:44:46,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:44:46,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:44:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:44:46,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:44:46,069 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 3 states. [2019-11-23 20:44:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:44:46,086 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-11-23 20:44:46,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:44:46,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-23 20:44:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:44:46,087 INFO L225 Difference]: With dead ends: 37 [2019-11-23 20:44:46,087 INFO L226 Difference]: Without dead ends: 24 [2019-11-23 20:44:46,088 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 20:44:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-23 20:44:46,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-23 20:44:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-23 20:44:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-23 20:44:46,094 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 21 [2019-11-23 20:44:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:44:46,095 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-23 20:44:46,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:44:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-23 20:44:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 20:44:46,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:44:46,096 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 20:44:46,096 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:44:46,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:44:46,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1873261422, now seen corresponding path program 1 times [2019-11-23 20:44:46,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:44:46,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156689349] [2019-11-23 20:44:46,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:44:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:44:46,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156689349] [2019-11-23 20:44:46,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792011816] [2019-11-23 20:44:46,933 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 20:44:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:46,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-23 20:44:47,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:44:47,094 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 20:44:47,095 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:47,125 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:47,126 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 20:44:47,127 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-11-23 20:44:47,160 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:47,162 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:47,163 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 20 [2019-11-23 20:44:47,164 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:47,171 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:47,171 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:44:47,171 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:14 [2019-11-23 20:44:47,225 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:47,226 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 20:44:47,226 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:47,251 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:47,252 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:44:47,252 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-11-23 20:44:47,287 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:47,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:47,320 INFO L343 Elim1Store]: treesize reduction 22, result has 53.2 percent of original size [2019-11-23 20:44:47,320 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 55 [2019-11-23 20:44:47,322 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:47,343 INFO L567 ElimStorePlain]: treesize reduction 26, result has 52.7 percent of original size [2019-11-23 20:44:47,344 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 20:44:47,345 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:29 [2019-11-23 20:44:47,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:44:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:44:47,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:44:47,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2019-11-23 20:44:47,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895372021] [2019-11-23 20:44:47,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-23 20:44:47,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:44:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-23 20:44:47,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2019-11-23 20:44:47,476 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 18 states. [2019-11-23 20:44:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:44:48,373 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2019-11-23 20:44:48,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-23 20:44:48,374 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2019-11-23 20:44:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:44:48,375 INFO L225 Difference]: With dead ends: 75 [2019-11-23 20:44:48,375 INFO L226 Difference]: Without dead ends: 56 [2019-11-23 20:44:48,378 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=222, Invalid=648, Unknown=0, NotChecked=0, Total=870 [2019-11-23 20:44:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-23 20:44:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 26. [2019-11-23 20:44:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 20:44:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-23 20:44:48,387 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2019-11-23 20:44:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:44:48,387 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-23 20:44:48,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-23 20:44:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-23 20:44:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 20:44:48,389 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:44:48,389 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 20:44:48,592 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:44:48,593 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:44:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:44:48,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1873201840, now seen corresponding path program 1 times [2019-11-23 20:44:48,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:44:48,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844788324] [2019-11-23 20:44:48,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:44:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 20:44:48,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844788324] [2019-11-23 20:44:48,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:44:48,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:44:48,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133996300] [2019-11-23 20:44:48,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:44:48,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:44:48,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:44:48,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:44:48,652 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2019-11-23 20:44:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:44:48,688 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-11-23 20:44:48,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 20:44:48,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-11-23 20:44:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:44:48,689 INFO L225 Difference]: With dead ends: 32 [2019-11-23 20:44:48,689 INFO L226 Difference]: Without dead ends: 30 [2019-11-23 20:44:48,689 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 20:44:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-23 20:44:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-11-23 20:44:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-23 20:44:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-23 20:44:48,696 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 21 [2019-11-23 20:44:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:44:48,696 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-23 20:44:48,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:44:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-23 20:44:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-23 20:44:48,698 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:44:48,698 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] [2019-11-23 20:44:48,698 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:44:48,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:44:48,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1045428993, now seen corresponding path program 1 times [2019-11-23 20:44:48,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:44:48,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118987435] [2019-11-23 20:44:48,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:44:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:44:49,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118987435] [2019-11-23 20:44:49,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599637889] [2019-11-23 20:44:49,375 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 20:44:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:49,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-23 20:44:49,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:44:49,465 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 20:44:49,466 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:49,471 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:49,472 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:44:49,472 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-23 20:44:49,500 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:49,501 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:49,501 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2019-11-23 20:44:49,502 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:49,517 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:49,518 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:44:49,518 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:13 [2019-11-23 20:44:49,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:44:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 20:44:49,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:44:49,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2019-11-23 20:44:49,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334456528] [2019-11-23 20:44:49,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-23 20:44:49,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:44:49,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-23 20:44:49,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-23 20:44:49,608 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 20 states. [2019-11-23 20:44:51,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:44:51,475 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2019-11-23 20:44:51,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-23 20:44:51,475 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 27 [2019-11-23 20:44:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:44:51,477 INFO L225 Difference]: With dead ends: 101 [2019-11-23 20:44:51,477 INFO L226 Difference]: Without dead ends: 99 [2019-11-23 20:44:51,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=600, Invalid=2156, Unknown=0, NotChecked=0, Total=2756 [2019-11-23 20:44:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-11-23 20:44:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 34. [2019-11-23 20:44:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-23 20:44:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-11-23 20:44:51,495 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2019-11-23 20:44:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:44:51,495 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-11-23 20:44:51,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-23 20:44:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-11-23 20:44:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-23 20:44:51,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:44:51,497 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] [2019-11-23 20:44:51,698 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:44:51,699 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:44:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:44:51,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1842484590, now seen corresponding path program 2 times [2019-11-23 20:44:51,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:44:51,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675938350] [2019-11-23 20:44:51,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:44:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 20:44:52,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675938350] [2019-11-23 20:44:52,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844660479] [2019-11-23 20:44:52,033 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 20:44:52,086 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 20:44:52,086 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:44:52,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 20:44:52,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:44:52,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:44:52,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 20:44:52,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-23 20:44:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 20:44:52,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:44:52,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2019-11-23 20:44:52,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192264362] [2019-11-23 20:44:52,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-23 20:44:52,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:44:52,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-23 20:44:52,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-23 20:44:52,261 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 16 states. [2019-11-23 20:44:52,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:44:52,533 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2019-11-23 20:44:52,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 20:44:52,533 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2019-11-23 20:44:52,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:44:52,535 INFO L225 Difference]: With dead ends: 95 [2019-11-23 20:44:52,535 INFO L226 Difference]: Without dead ends: 52 [2019-11-23 20:44:52,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2019-11-23 20:44:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-23 20:44:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2019-11-23 20:44:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-23 20:44:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-11-23 20:44:52,543 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 33 [2019-11-23 20:44:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:44:52,544 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-11-23 20:44:52,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-23 20:44:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-11-23 20:44:52,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-23 20:44:52,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:44:52,545 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:44:52,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:44:52,748 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:44:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:44:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1627491142, now seen corresponding path program 3 times [2019-11-23 20:44:52,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:44:52,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4748047] [2019-11-23 20:44:52,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:44:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:44:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:44:53,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4748047] [2019-11-23 20:44:53,489 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703603099] [2019-11-23 20:44:53,489 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 20:44:53,549 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 20:44:53,549 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:44:53,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-23 20:44:53,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:44:53,622 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 20:44:53,622 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:53,633 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:53,634 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 20:44:53,634 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-11-23 20:44:53,671 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:53,673 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:53,673 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2019-11-23 20:44:53,674 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:53,681 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:53,681 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:44:53,682 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:22 [2019-11-23 20:44:53,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:53,750 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 20:44:53,750 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:53,759 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:53,760 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 20:44:53,760 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-11-23 20:44:53,815 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:53,816 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:53,820 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:53,822 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:53,823 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 40 [2019-11-23 20:44:53,823 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:53,833 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 20:44:53,834 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 20:44:53,834 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:31 [2019-11-23 20:44:53,881 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:53,917 INFO L343 Elim1Store]: treesize reduction 32, result has 66.3 percent of original size [2019-11-23 20:44:53,917 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 81 [2019-11-23 20:44:53,919 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:53,953 INFO L567 ElimStorePlain]: treesize reduction 41, result has 51.2 percent of original size [2019-11-23 20:44:53,954 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 20:44:53,955 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:43 [2019-11-23 20:44:54,005 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 20:44:54,083 INFO L343 Elim1Store]: treesize reduction 183, result has 21.1 percent of original size [2019-11-23 20:44:54,083 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 59 treesize of output 70 [2019-11-23 20:44:54,085 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 20:44:54,112 INFO L567 ElimStorePlain]: treesize reduction 30, result has 58.9 percent of original size [2019-11-23 20:44:54,113 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 20:44:54,113 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:43 [2019-11-23 20:45:00,540 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 32 [2019-11-23 20:45:02,605 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 34 [2019-11-23 20:45:04,670 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 34 [2019-11-23 20:45:06,733 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 34 [2019-11-23 20:45:06,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 20:45:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:45:06,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:45:06,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2019-11-23 20:45:06,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097826629] [2019-11-23 20:45:06,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-23 20:45:06,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:45:06,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-23 20:45:06,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=707, Unknown=3, NotChecked=0, Total=812 [2019-11-23 20:45:06,765 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 29 states. [2019-11-23 20:45:12,134 WARN L192 SmtUtils]: Spent 4.55 s on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2019-11-23 20:45:17,513 WARN L192 SmtUtils]: Spent 5.27 s on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2019-11-23 20:45:17,983 WARN L192 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2019-11-23 20:45:22,128 WARN L192 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2019-11-23 20:45:24,538 WARN L192 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-11-23 20:45:28,670 WARN L192 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2019-11-23 20:45:29,470 WARN L192 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-11-23 20:45:34,804 WARN L192 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2019-11-23 20:45:39,224 WARN L192 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2019-11-23 20:45:41,643 WARN L192 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2019-11-23 20:45:44,043 WARN L192 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2019-11-23 20:45:47,545 WARN L192 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-11-23 20:45:51,639 WARN L192 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2019-11-23 20:45:53,989 WARN L192 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2019-11-23 20:45:54,834 WARN L192 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2019-11-23 20:45:58,921 WARN L192 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-11-23 20:46:01,284 WARN L192 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2019-11-23 20:46:06,425 WARN L192 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2019-11-23 20:46:08,807 WARN L192 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-11-23 20:46:13,254 WARN L192 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2019-11-23 20:46:17,343 WARN L192 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-11-23 20:46:21,425 WARN L192 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-11-23 20:46:27,619 WARN L192 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-11-23 20:46:29,999 WARN L192 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 52 DAG size of output: 39