/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-fpi/brs2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:14:05,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:14:05,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:14:05,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:14:05,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:14:05,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:14:05,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:14:05,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:14:05,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:14:05,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:14:05,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:14:05,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:14:05,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:14:05,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:14:05,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:14:05,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:14:05,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:14:05,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:14:05,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:14:05,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:14:05,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:14:05,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:14:05,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:14:05,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:14:05,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:14:05,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:14:05,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:14:05,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:14:05,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:14:05,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:14:05,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:14:05,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:14:05,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:14:05,982 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:14:05,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:14:05,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:14:05,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:14:05,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:14:05,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:14:05,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:14:05,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:14:05,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:14:05,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:14:05,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:14:05,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:14:05,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:14:05,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:14:05,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:14:05,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:14:05,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:14:05,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:14:05,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:14:05,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:14:05,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:14:05,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:14:06,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:14:06,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:14:06,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:14:06,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:14:06,526 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:14:06,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs2.c [2020-12-23 01:14:06,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9b66bf1a6/829cb5a04c0a4a009d462d0b53157bab/FLAG670724303 [2020-12-23 01:14:07,410 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:14:07,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2.c [2020-12-23 01:14:07,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9b66bf1a6/829cb5a04c0a4a009d462d0b53157bab/FLAG670724303 [2020-12-23 01:14:07,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9b66bf1a6/829cb5a04c0a4a009d462d0b53157bab [2020-12-23 01:14:07,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:14:07,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:14:07,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:14:07,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:14:07,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:14:07,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:14:07" (1/1) ... [2020-12-23 01:14:07,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28cddaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:07, skipping insertion in model container [2020-12-23 01:14:07,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:14:07" (1/1) ... [2020-12-23 01:14:07,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:14:07,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:14:07,968 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] [2020-12-23 01:14:07,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:14:08,002 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:14:08,018 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] [2020-12-23 01:14:08,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:14:08,047 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:14:08,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08 WrapperNode [2020-12-23 01:14:08,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:14:08,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:14:08,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:14:08,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:14:08,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:14:08,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:14:08,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:14:08,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:14:08,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... [2020-12-23 01:14:08,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:14:08,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:14:08,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:14:08,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:14:08,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:14:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:14:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:14:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:14:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:14:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:14:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:14:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:14:08,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:14:08,711 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 01:14:08,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:14:08 BoogieIcfgContainer [2020-12-23 01:14:08,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:14:08,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:14:08,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:14:08,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:14:08,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:14:07" (1/3) ... [2020-12-23 01:14:08,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117212b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:14:08, skipping insertion in model container [2020-12-23 01:14:08,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:08" (2/3) ... [2020-12-23 01:14:08,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117212b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:14:08, skipping insertion in model container [2020-12-23 01:14:08,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:14:08" (3/3) ... [2020-12-23 01:14:08,774 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2.c [2020-12-23 01:14:08,793 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:14:08,822 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:14:08,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:14:08,961 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:14:08,962 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:14:08,962 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:14:08,962 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:14:08,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:14:08,962 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:14:08,963 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:14:08,963 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:14:08,987 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-23 01:14:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:14:08,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:08,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:08,999 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:09,010 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-12-23 01:14:09,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:09,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789801331] [2020-12-23 01:14:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:09,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789801331] [2020-12-23 01:14:09,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:14:09,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:14:09,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826845930] [2020-12-23 01:14:09,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:14:09,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:09,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:14:09,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:14:09,377 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-23 01:14:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:09,400 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2020-12-23 01:14:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:14:09,402 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 01:14:09,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:09,424 INFO L225 Difference]: With dead ends: 36 [2020-12-23 01:14:09,424 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 01:14:09,431 INFO L677 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 [2020-12-23 01:14:09,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 01:14:09,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 01:14:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 01:14:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-23 01:14:09,477 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-12-23 01:14:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:09,478 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-23 01:14:09,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:14:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-23 01:14:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:14:09,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:09,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:09,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:14:09,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:09,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-12-23 01:14:09,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:09,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092322086] [2020-12-23 01:14:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:09,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092322086] [2020-12-23 01:14:09,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:14:09,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:14:09,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055269300] [2020-12-23 01:14:09,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:14:09,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:09,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:14:09,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:14:09,674 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-12-23 01:14:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:09,737 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-12-23 01:14:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:14:09,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 01:14:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:09,738 INFO L225 Difference]: With dead ends: 33 [2020-12-23 01:14:09,738 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 01:14:09,739 INFO L677 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 [2020-12-23 01:14:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 01:14:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-12-23 01:14:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 01:14:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-23 01:14:09,746 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-12-23 01:14:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:09,747 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-23 01:14:09,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:14:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-23 01:14:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:14:09,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:09,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:09,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:14:09,748 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-12-23 01:14:09,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:09,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054851471] [2020-12-23 01:14:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 01:14:09,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054851471] [2020-12-23 01:14:09,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:14:09,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 01:14:09,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369119930] [2020-12-23 01:14:09,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 01:14:09,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:09,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 01:14:09,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:14:09,849 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-12-23 01:14:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:09,918 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-12-23 01:14:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 01:14:09,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 01:14:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:09,920 INFO L225 Difference]: With dead ends: 27 [2020-12-23 01:14:09,920 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 01:14:09,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 01:14:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 01:14:09,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-23 01:14:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 01:14:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-23 01:14:09,927 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-12-23 01:14:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:09,927 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-23 01:14:09,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 01:14:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-23 01:14:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:14:09,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:09,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:09,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:14:09,929 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:09,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-12-23 01:14:09,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:09,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488112997] [2020-12-23 01:14:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:10,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488112997] [2020-12-23 01:14:10,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102293054] [2020-12-23 01:14:10,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:10,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:14:10,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:10,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:10,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-23 01:14:10,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705092650] [2020-12-23 01:14:10,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:14:10,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:10,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:14:10,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:14:10,296 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-12-23 01:14:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:10,419 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-12-23 01:14:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:14:10,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-23 01:14:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:10,421 INFO L225 Difference]: With dead ends: 43 [2020-12-23 01:14:10,421 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 01:14:10,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:14:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 01:14:10,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-12-23 01:14:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 01:14:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-23 01:14:10,429 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-12-23 01:14:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:10,429 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-23 01:14:10,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:14:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-23 01:14:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 01:14:10,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:10,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:10,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:10,645 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:10,647 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2020-12-23 01:14:10,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:10,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608564927] [2020-12-23 01:14:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:11,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608564927] [2020-12-23 01:14:11,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152193285] [2020-12-23 01:14:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:11,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 01:14:11,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:11,411 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2020-12-23 01:14:11,414 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:11,420 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:11,421 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:11,421 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:14:11,512 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-23 01:14:11,513 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:11,519 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:11,520 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:11,520 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-23 01:14:11,602 INFO L382 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 21 treesize of output 20 [2020-12-23 01:14:11,606 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:11,615 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:11,617 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:11,617 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-23 01:14:11,740 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2020-12-23 01:14:11,744 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:11,753 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:11,757 INFO L547 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. [2020-12-23 01:14:11,759 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:30 [2020-12-23 01:14:11,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:11,902 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:11,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:11,921 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:11,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:11,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:11,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:11,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:11,994 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:14:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:12,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:12,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2020-12-23 01:14:12,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640901703] [2020-12-23 01:14:12,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 01:14:12,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:12,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 01:14:12,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-12-23 01:14:12,042 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 23 states. [2020-12-23 01:14:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:13,177 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-12-23 01:14:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 01:14:13,178 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2020-12-23 01:14:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:13,179 INFO L225 Difference]: With dead ends: 50 [2020-12-23 01:14:13,179 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 01:14:13,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 01:14:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 01:14:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-12-23 01:14:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 01:14:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-23 01:14:13,186 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2020-12-23 01:14:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:13,187 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-23 01:14:13,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 01:14:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-23 01:14:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:14:13,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:13,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:13,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:13,402 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:13,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2020-12-23 01:14:13,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:13,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973442914] [2020-12-23 01:14:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:13,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973442914] [2020-12-23 01:14:13,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61320238] [2020-12-23 01:14:13,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:13,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:14:13,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:13,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:14:13,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:13,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:13,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-23 01:14:13,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975600254] [2020-12-23 01:14:13,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 01:14:13,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:13,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 01:14:13,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:14:13,697 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 13 states. [2020-12-23 01:14:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:13,855 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-12-23 01:14:13,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 01:14:13,855 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-12-23 01:14:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:13,856 INFO L225 Difference]: With dead ends: 49 [2020-12-23 01:14:13,856 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 01:14:13,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:14:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 01:14:13,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-12-23 01:14:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 01:14:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-23 01:14:13,863 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2020-12-23 01:14:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:13,864 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-23 01:14:13,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 01:14:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-23 01:14:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:14:13,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:13,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:14,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:14,079 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:14,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:14,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1507669223, now seen corresponding path program 3 times [2020-12-23 01:14:14,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:14,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541302213] [2020-12-23 01:14:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:15,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541302213] [2020-12-23 01:14:15,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545441714] [2020-12-23 01:14:15,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:15,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 01:14:15,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:15,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 01:14:15,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:15,178 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2020-12-23 01:14:15,182 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,187 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:15,188 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,188 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:14:15,227 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:14:15,228 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:15,236 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,236 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:14:15,382 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-12-23 01:14:15,383 INFO L382 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 1 case distinctions, treesize of input 28 treesize of output 27 [2020-12-23 01:14:15,384 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:15,397 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,397 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-12-23 01:14:15,702 INFO L348 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2020-12-23 01:14:15,703 INFO L382 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 35 treesize of output 37 [2020-12-23 01:14:15,705 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:15,728 INFO L547 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. [2020-12-23 01:14:15,729 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:49 [2020-12-23 01:14:15,920 INFO L348 Elim1Store]: treesize reduction 17, result has 66.7 percent of original size [2020-12-23 01:14:15,922 INFO L382 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 3 case distinctions, treesize of input 56 treesize of output 86 [2020-12-23 01:14:15,927 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,966 INFO L625 ElimStorePlain]: treesize reduction 51, result has 52.8 percent of original size [2020-12-23 01:14:15,969 INFO L547 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. [2020-12-23 01:14:15,969 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:57 [2020-12-23 01:14:16,288 INFO L348 Elim1Store]: treesize reduction 17, result has 81.9 percent of original size [2020-12-23 01:14:16,289 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 138 [2020-12-23 01:14:16,295 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:16,353 INFO L625 ElimStorePlain]: treesize reduction 148, result has 30.5 percent of original size [2020-12-23 01:14:16,360 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 01:14:16,360 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:80, output treesize:65 [2020-12-23 01:14:16,693 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:16,698 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:16,700 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:14:16,704 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:14:16,710 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:16,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:16,714 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:16,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:16,722 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:14:16,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:14:16,729 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:14:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:14:16,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:16,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 36 [2020-12-23 01:14:16,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704685424] [2020-12-23 01:14:16,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-12-23 01:14:16,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:16,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-12-23 01:14:16,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 01:14:16,786 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 36 states. [2020-12-23 01:14:22,345 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-12-23 01:14:23,973 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-12-23 01:14:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:24,790 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-23 01:14:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-23 01:14:24,791 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 29 [2020-12-23 01:14:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:24,792 INFO L225 Difference]: With dead ends: 71 [2020-12-23 01:14:24,792 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 01:14:24,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=791, Invalid=4611, Unknown=0, NotChecked=0, Total=5402 [2020-12-23 01:14:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 01:14:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 34. [2020-12-23 01:14:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 01:14:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-12-23 01:14:24,804 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 29 [2020-12-23 01:14:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:24,805 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-12-23 01:14:24,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-12-23 01:14:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-12-23 01:14:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:14:24,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:24,806 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:25,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:25,022 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:25,023 INFO L82 PathProgramCache]: Analyzing trace with hash -904524816, now seen corresponding path program 4 times [2020-12-23 01:14:25,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:25,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257077107] [2020-12-23 01:14:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:25,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257077107] [2020-12-23 01:14:25,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071262314] [2020-12-23 01:14:25,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:25,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:14:25,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:25,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:14:25,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:25,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:25,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2020-12-23 01:14:25,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223347492] [2020-12-23 01:14:25,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 01:14:25,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:25,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 01:14:25,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:14:25,316 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 16 states. [2020-12-23 01:14:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:25,548 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-12-23 01:14:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 01:14:25,548 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-12-23 01:14:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:25,549 INFO L225 Difference]: With dead ends: 58 [2020-12-23 01:14:25,549 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 01:14:25,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-12-23 01:14:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 01:14:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-12-23 01:14:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 01:14:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 01:14:25,558 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 32 [2020-12-23 01:14:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:25,558 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 01:14:25,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 01:14:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 01:14:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 01:14:25,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:25,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:25,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:25,773 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:25,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2033267204, now seen corresponding path program 5 times [2020-12-23 01:14:25,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:25,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58009472] [2020-12-23 01:14:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:27,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58009472] [2020-12-23 01:14:27,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571803266] [2020-12-23 01:14:27,141 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:27,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 01:14:27,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:27,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 01:14:27,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:27,236 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2020-12-23 01:14:27,238 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,246 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,247 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 01:14:27,269 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:14:27,270 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,281 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,283 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,283 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 01:14:27,309 INFO L382 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 34 treesize of output 29 [2020-12-23 01:14:27,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,319 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 26 [2020-12-23 01:14:27,320 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,326 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,327 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,339 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,341 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,341 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:47, output treesize:36 [2020-12-23 01:14:27,374 INFO L382 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 48 treesize of output 41 [2020-12-23 01:14:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,397 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 27 treesize of output 36 [2020-12-23 01:14:27,402 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,410 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,425 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,427 INFO L547 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. [2020-12-23 01:14:27,428 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:61, output treesize:43 [2020-12-23 01:14:27,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,527 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2020-12-23 01:14:27,529 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,548 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,550 INFO L547 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. [2020-12-23 01:14:27,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:53 [2020-12-23 01:14:27,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,718 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:14:27,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,721 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 51 [2020-12-23 01:14:27,723 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,742 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,744 INFO L547 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. [2020-12-23 01:14:27,744 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:57 [2020-12-23 01:14:27,904 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:14:27,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:27,909 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 55 [2020-12-23 01:14:27,912 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:27,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:27,933 INFO L547 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. [2020-12-23 01:14:27,933 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:57 [2020-12-23 01:14:28,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:28,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:28,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:28,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:28,195 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:14:28,197 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2020-12-23 01:14:28,199 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:28,216 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:28,219 INFO L547 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. [2020-12-23 01:14:28,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:69, output treesize:48 [2020-12-23 01:14:28,319 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:28,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:28,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:28,327 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:14:28,331 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:28,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:28,335 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:28,336 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:28,340 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:28,341 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:14:28,343 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:14:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:28,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:28,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 31 [2020-12-23 01:14:28,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901496057] [2020-12-23 01:14:28,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 01:14:28,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:28,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 01:14:28,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2020-12-23 01:14:28,400 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 31 states. [2020-12-23 01:14:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:30,162 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-23 01:14:30,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 01:14:30,163 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 35 [2020-12-23 01:14:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:30,164 INFO L225 Difference]: With dead ends: 71 [2020-12-23 01:14:30,164 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 01:14:30,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=305, Invalid=1857, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 01:14:30,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 01:14:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-23 01:14:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 01:14:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-23 01:14:30,174 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2020-12-23 01:14:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:30,174 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-23 01:14:30,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 01:14:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-23 01:14:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 01:14:30,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:30,175 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:30,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:30,389 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:30,390 INFO L82 PathProgramCache]: Analyzing trace with hash 456784429, now seen corresponding path program 6 times [2020-12-23 01:14:30,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:30,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394542223] [2020-12-23 01:14:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:30,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394542223] [2020-12-23 01:14:30,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043063327] [2020-12-23 01:14:30,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:30,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-23 01:14:30,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:30,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 01:14:30,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:30,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:30,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2020-12-23 01:14:30,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767739102] [2020-12-23 01:14:30,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 01:14:30,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:30,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 01:14:30,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:14:30,767 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 19 states. [2020-12-23 01:14:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:31,027 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-12-23 01:14:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 01:14:31,028 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2020-12-23 01:14:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:31,028 INFO L225 Difference]: With dead ends: 67 [2020-12-23 01:14:31,028 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 01:14:31,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-12-23 01:14:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 01:14:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-12-23 01:14:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 01:14:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-12-23 01:14:31,037 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 38 [2020-12-23 01:14:31,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:31,038 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-12-23 01:14:31,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 01:14:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-12-23 01:14:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 01:14:31,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:31,039 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:31,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 01:14:31,248 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:31,249 INFO L82 PathProgramCache]: Analyzing trace with hash -851390281, now seen corresponding path program 7 times [2020-12-23 01:14:31,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:31,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489070266] [2020-12-23 01:14:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:33,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489070266] [2020-12-23 01:14:33,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614179765] [2020-12-23 01:14:33,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:14:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:33,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 01:14:33,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:33,332 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2020-12-23 01:14:33,336 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:33,341 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,341 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:14:33,418 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:14:33,419 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,428 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:33,428 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,429 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:14:33,544 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-12-23 01:14:33,544 INFO L382 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 1 case distinctions, treesize of input 28 treesize of output 27 [2020-12-23 01:14:33,546 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,557 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:33,558 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,558 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2020-12-23 01:14:33,741 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:14:33,742 INFO L382 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 34 treesize of output 96 [2020-12-23 01:14:33,745 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,785 INFO L625 ElimStorePlain]: treesize reduction 44, result has 45.7 percent of original size [2020-12-23 01:14:33,786 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,786 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2020-12-23 01:14:34,042 INFO L348 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2020-12-23 01:14:34,042 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 46 [2020-12-23 01:14:34,044 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:34,061 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,061 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:44 [2020-12-23 01:14:34,253 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2020-12-23 01:14:34,253 INFO L382 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 6 case distinctions, treesize of input 48 treesize of output 56 [2020-12-23 01:14:34,258 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,279 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:34,280 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,280 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2020-12-23 01:14:34,531 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:14:34,534 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:14:34,546 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,600 INFO L625 ElimStorePlain]: treesize reduction 84, result has 42.5 percent of original size [2020-12-23 01:14:34,601 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,601 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2020-12-23 01:14:34,843 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:14:34,844 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:14:34,851 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,900 INFO L625 ElimStorePlain]: treesize reduction 84, result has 42.5 percent of original size [2020-12-23 01:14:34,901 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,901 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2020-12-23 01:14:35,172 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:14:35,173 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 128 [2020-12-23 01:14:35,177 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:35,229 INFO L625 ElimStorePlain]: treesize reduction 96, result has 44.8 percent of original size [2020-12-23 01:14:35,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:35,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:85, output treesize:78 [2020-12-23 01:14:35,434 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2020-12-23 01:14:35,435 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 61 [2020-12-23 01:14:35,437 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:35,453 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:35,455 INFO L547 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. [2020-12-23 01:14:35,455 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:80, output treesize:59 [2020-12-23 01:14:35,617 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:35,620 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:35,627 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:35,628 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:14:35,635 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:35,637 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:35,639 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:35,640 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:35,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:35,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:14:35,651 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:14:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:35,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:35,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21] total 45 [2020-12-23 01:14:35,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400313025] [2020-12-23 01:14:35,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-12-23 01:14:35,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:35,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-12-23 01:14:35,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1757, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 01:14:35,736 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 45 states. [2020-12-23 01:14:37,460 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-12-23 01:14:38,609 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 37 [2020-12-23 01:14:39,001 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2020-12-23 01:14:39,251 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-12-23 01:14:39,452 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-12-23 01:14:39,645 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2020-12-23 01:14:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:39,686 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-12-23 01:14:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 01:14:39,686 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 41 [2020-12-23 01:14:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:39,688 INFO L225 Difference]: With dead ends: 77 [2020-12-23 01:14:39,688 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 01:14:39,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=627, Invalid=4485, Unknown=0, NotChecked=0, Total=5112 [2020-12-23 01:14:39,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 01:14:39,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-12-23 01:14:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 01:14:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 01:14:39,700 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 41 [2020-12-23 01:14:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:39,701 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 01:14:39,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-12-23 01:14:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 01:14:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 01:14:39,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:39,702 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:39,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 01:14:39,917 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:39,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:39,918 INFO L82 PathProgramCache]: Analyzing trace with hash -389695086, now seen corresponding path program 8 times [2020-12-23 01:14:39,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:39,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291530864] [2020-12-23 01:14:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:40,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291530864] [2020-12-23 01:14:40,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327960030] [2020-12-23 01:14:40,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:40,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:14:40,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:40,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 01:14:40,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:40,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:40,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2020-12-23 01:14:40,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967831667] [2020-12-23 01:14:40,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 01:14:40,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:40,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 01:14:40,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-12-23 01:14:40,344 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 22 states. [2020-12-23 01:14:40,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:40,611 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-12-23 01:14:40,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 01:14:40,612 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2020-12-23 01:14:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:40,613 INFO L225 Difference]: With dead ends: 76 [2020-12-23 01:14:40,613 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 01:14:40,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-12-23 01:14:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 01:14:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-12-23 01:14:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 01:14:40,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-12-23 01:14:40,623 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 44 [2020-12-23 01:14:40,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:40,623 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-12-23 01:14:40,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 01:14:40,624 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-12-23 01:14:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 01:14:40,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:40,625 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:40,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:40,840 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:40,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:40,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2074257114, now seen corresponding path program 9 times [2020-12-23 01:14:40,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:40,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329644324] [2020-12-23 01:14:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:43,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329644324] [2020-12-23 01:14:43,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733692021] [2020-12-23 01:14:43,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:43,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 01:14:43,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:43,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-23 01:14:43,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:43,728 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:14:43,729 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:43,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:43,739 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:43,739 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2020-12-23 01:14:43,884 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:43,884 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:14:43,886 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:43,914 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.9 percent of original size [2020-12-23 01:14:43,915 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:43,915 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2020-12-23 01:14:44,130 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:14:44,130 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 96 [2020-12-23 01:14:44,133 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:44,175 INFO L625 ElimStorePlain]: treesize reduction 44, result has 46.3 percent of original size [2020-12-23 01:14:44,176 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:44,176 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:38 [2020-12-23 01:14:44,436 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2020-12-23 01:14:44,436 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 138 [2020-12-23 01:14:44,439 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:44,497 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.6 percent of original size [2020-12-23 01:14:44,498 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:44,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2020-12-23 01:14:44,884 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-12-23 01:14:44,885 INFO L348 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2020-12-23 01:14:44,885 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 153 [2020-12-23 01:14:44,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:44,965 INFO L625 ElimStorePlain]: treesize reduction 66, result has 48.4 percent of original size [2020-12-23 01:14:44,966 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:44,966 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:66, output treesize:62 [2020-12-23 01:14:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:45,428 INFO L348 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2020-12-23 01:14:45,429 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2020-12-23 01:14:45,430 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:45,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:45,455 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:45,455 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:67 [2020-12-23 01:14:45,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:45,721 INFO L348 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2020-12-23 01:14:45,722 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 73 [2020-12-23 01:14:45,724 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:45,747 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:45,748 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:45,748 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:87, output treesize:70 [2020-12-23 01:14:45,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:45,975 INFO L348 Elim1Store]: treesize reduction 120, result has 37.2 percent of original size [2020-12-23 01:14:45,979 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 154 [2020-12-23 01:14:45,985 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:46,051 INFO L625 ElimStorePlain]: treesize reduction 112, result has 41.7 percent of original size [2020-12-23 01:14:46,053 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:46,053 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:80 [2020-12-23 01:14:46,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:46,488 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2020-12-23 01:14:46,489 INFO L348 Elim1Store]: treesize reduction 137, result has 51.6 percent of original size [2020-12-23 01:14:46,490 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 243 [2020-12-23 01:14:46,497 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:46,617 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2020-12-23 01:14:46,618 INFO L625 ElimStorePlain]: treesize reduction 260, result has 25.7 percent of original size [2020-12-23 01:14:46,619 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:46,619 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:106, output treesize:90 [2020-12-23 01:14:46,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:47,201 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 87 [2020-12-23 01:14:47,202 INFO L348 Elim1Store]: treesize reduction 172, result has 56.2 percent of original size [2020-12-23 01:14:47,203 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 105 treesize of output 331 [2020-12-23 01:14:47,214 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:47,356 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 51 [2020-12-23 01:14:47,357 INFO L625 ElimStorePlain]: treesize reduction 448, result has 18.2 percent of original size [2020-12-23 01:14:47,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:47,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:100 [2020-12-23 01:14:47,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:48,223 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 110 [2020-12-23 01:14:48,224 INFO L348 Elim1Store]: treesize reduction 225, result has 56.8 percent of original size [2020-12-23 01:14:48,225 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 115 treesize of output 419 [2020-12-23 01:14:48,238 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:48,412 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 55 [2020-12-23 01:14:48,412 INFO L625 ElimStorePlain]: treesize reduction 570, result has 15.7 percent of original size [2020-12-23 01:14:48,416 INFO L547 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. [2020-12-23 01:14:48,416 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:129, output treesize:106 [2020-12-23 01:14:49,223 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:49,227 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:14:49,231 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:49,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:14:49,238 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:49,241 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:49,242 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:49,245 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:14:49,249 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:49,250 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:14:49,253 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:14:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:49,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:49,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 59 [2020-12-23 01:14:49,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460351479] [2020-12-23 01:14:49,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-12-23 01:14:49,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-12-23 01:14:49,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=3137, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 01:14:49,368 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 59 states. [2020-12-23 01:14:52,144 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2020-12-23 01:14:55,224 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-12-23 01:14:55,543 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2020-12-23 01:14:56,048 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 43 [2020-12-23 01:14:56,240 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-23 01:14:56,609 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 50 [2020-12-23 01:14:56,783 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-12-23 01:14:57,100 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 54 [2020-12-23 01:14:57,297 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-12-23 01:14:59,661 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-12-23 01:14:59,993 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 52 [2020-12-23 01:15:00,242 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-12-23 01:15:00,690 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 76 [2020-12-23 01:15:01,182 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 83 [2020-12-23 01:15:02,185 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2020-12-23 01:15:03,078 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2020-12-23 01:15:04,775 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-12-23 01:15:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:04,786 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-12-23 01:15:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-12-23 01:15:04,787 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 47 [2020-12-23 01:15:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:04,788 INFO L225 Difference]: With dead ends: 118 [2020-12-23 01:15:04,788 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 01:15:04,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3586 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=1149, Invalid=10841, Unknown=0, NotChecked=0, Total=11990 [2020-12-23 01:15:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 01:15:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-12-23 01:15:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 01:15:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-12-23 01:15:04,802 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 47 [2020-12-23 01:15:04,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:04,802 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-12-23 01:15:04,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-12-23 01:15:04,802 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-12-23 01:15:04,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 01:15:04,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:04,803 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:05,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:05,007 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:05,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:05,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1527506219, now seen corresponding path program 10 times [2020-12-23 01:15:05,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:05,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803381625] [2020-12-23 01:15:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:06,071 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-23 01:15:06,380 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-23 01:15:06,583 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-23 01:15:06,763 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 01:15:06,930 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-23 01:15:07,101 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 01:15:07,281 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 01:15:07,499 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 01:15:07,707 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 01:15:08,033 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-23 01:15:08,348 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-12-23 01:15:08,546 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-12-23 01:15:08,730 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-12-23 01:15:08,919 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-23 01:15:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:09,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803381625] [2020-12-23 01:15:09,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475241917] [2020-12-23 01:15:09,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:09,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:15:09,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:09,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-23 01:15:09,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:09,958 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2020-12-23 01:15:09,960 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:09,966 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:09,967 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:09,967 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:15:10,126 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:15:10,128 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:10,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:10,138 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:10,139 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:15:10,327 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-12-23 01:15:10,327 INFO L382 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 1 case distinctions, treesize of input 28 treesize of output 27 [2020-12-23 01:15:10,329 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:10,343 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:10,344 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:10,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2020-12-23 01:15:10,619 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:15:10,619 INFO L382 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 34 treesize of output 96 [2020-12-23 01:15:10,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:10,679 INFO L625 ElimStorePlain]: treesize reduction 44, result has 45.7 percent of original size [2020-12-23 01:15:10,680 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:10,681 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2020-12-23 01:15:11,003 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-12-23 01:15:11,004 INFO L348 Elim1Store]: treesize reduction 81, result has 52.9 percent of original size [2020-12-23 01:15:11,004 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 111 [2020-12-23 01:15:11,007 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:11,071 INFO L625 ElimStorePlain]: treesize reduction 44, result has 52.7 percent of original size [2020-12-23 01:15:11,072 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:11,072 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2020-12-23 01:15:11,490 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-12-23 01:15:11,492 INFO L348 Elim1Store]: treesize reduction 72, result has 68.6 percent of original size [2020-12-23 01:15:11,493 INFO L382 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 10 case distinctions, treesize of input 52 treesize of output 180 [2020-12-23 01:15:11,496 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:11,593 INFO L625 ElimStorePlain]: treesize reduction 88, result has 38.5 percent of original size [2020-12-23 01:15:11,594 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:11,595 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2020-12-23 01:15:12,094 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 30 [2020-12-23 01:15:12,095 INFO L348 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2020-12-23 01:15:12,095 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 70 [2020-12-23 01:15:12,098 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:12,125 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:12,128 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:12,129 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:66, output treesize:62 [2020-12-23 01:15:12,423 INFO L348 Elim1Store]: treesize reduction 180, result has 0.6 percent of original size [2020-12-23 01:15:12,423 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2020-12-23 01:15:12,425 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:12,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:12,458 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:12,458 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:72 [2020-12-23 01:15:12,913 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:15:12,914 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:15:12,915 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 180 [2020-12-23 01:15:12,922 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:13,018 INFO L625 ElimStorePlain]: treesize reduction 114, result has 41.2 percent of original size [2020-12-23 01:15:13,020 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:13,020 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:80 [2020-12-23 01:15:13,446 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:15:13,447 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:15:13,447 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 180 [2020-12-23 01:15:13,452 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:13,553 INFO L625 ElimStorePlain]: treesize reduction 126, result has 38.8 percent of original size [2020-12-23 01:15:13,554 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:13,554 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:80 [2020-12-23 01:15:14,032 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:15:14,033 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:15:14,033 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 180 [2020-12-23 01:15:14,040 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:14,143 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2020-12-23 01:15:14,143 INFO L625 ElimStorePlain]: treesize reduction 124, result has 42.1 percent of original size [2020-12-23 01:15:14,145 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:14,145 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:103, output treesize:90 [2020-12-23 01:15:14,590 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:15:14,591 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:15:14,592 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 180 [2020-12-23 01:15:14,599 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:14,705 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-12-23 01:15:14,706 INFO L625 ElimStorePlain]: treesize reduction 112, result has 42.9 percent of original size [2020-12-23 01:15:14,707 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:14,707 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:103, output treesize:84 [2020-12-23 01:15:15,203 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:15:15,204 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:15:15,205 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 182 [2020-12-23 01:15:15,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:15,318 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-12-23 01:15:15,319 INFO L625 ElimStorePlain]: treesize reduction 132, result has 42.9 percent of original size [2020-12-23 01:15:15,320 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:15,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:105, output treesize:99 [2020-12-23 01:15:15,650 INFO L348 Elim1Store]: treesize reduction 180, result has 0.6 percent of original size [2020-12-23 01:15:15,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 87 [2020-12-23 01:15:15,653 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:15,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:15,688 INFO L547 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. [2020-12-23 01:15:15,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:100, output treesize:77 [2020-12-23 01:15:15,888 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:15,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:15,895 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:15,896 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:15:15,899 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:15,901 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:15,902 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:15,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:15,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:15,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:15:15,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:15:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:16,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:16,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28] total 60 [2020-12-23 01:15:16,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660511956] [2020-12-23 01:15:16,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-12-23 01:15:16,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:16,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-12-23 01:15:16,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=3213, Unknown=0, NotChecked=0, Total=3540 [2020-12-23 01:15:16,064 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 60 states. [2020-12-23 01:15:18,435 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-12-23 01:15:18,680 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-12-23 01:15:19,173 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 39 [2020-12-23 01:15:19,503 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 46 [2020-12-23 01:15:19,805 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 47 [2020-12-23 01:15:20,177 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 44 [2020-12-23 01:15:20,348 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-12-23 01:15:20,690 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2020-12-23 01:15:21,097 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 45 [2020-12-23 01:15:21,370 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-12-23 01:15:21,637 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 45 [2020-12-23 01:15:21,956 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 49 [2020-12-23 01:15:22,328 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 50 [2020-12-23 01:15:22,586 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 50 [2020-12-23 01:15:22,968 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 49 [2020-12-23 01:15:23,292 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 47 [2020-12-23 01:15:23,593 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 47 [2020-12-23 01:15:24,014 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 49 [2020-12-23 01:15:24,421 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 65 [2020-12-23 01:15:24,773 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2020-12-23 01:15:25,196 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 54 [2020-12-23 01:15:25,539 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2020-12-23 01:15:25,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:25,683 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2020-12-23 01:15:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-23 01:15:25,685 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 53 [2020-12-23 01:15:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:25,686 INFO L225 Difference]: With dead ends: 96 [2020-12-23 01:15:25,686 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 01:15:25,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2788 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=775, Invalid=7967, Unknown=0, NotChecked=0, Total=8742 [2020-12-23 01:15:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 01:15:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-12-23 01:15:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 01:15:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-12-23 01:15:25,716 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 53 [2020-12-23 01:15:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:25,719 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-12-23 01:15:25,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-12-23 01:15:25,719 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-12-23 01:15:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 01:15:25,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:25,720 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:25,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 01:15:25,934 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:25,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash 837014196, now seen corresponding path program 11 times [2020-12-23 01:15:25,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:25,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396705862] [2020-12-23 01:15:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:26,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396705862] [2020-12-23 01:15:26,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286234014] [2020-12-23 01:15:26,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:26,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-23 01:15:26,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:26,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 01:15:26,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:27,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:27,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2020-12-23 01:15:27,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578245291] [2020-12-23 01:15:27,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 01:15:27,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:27,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 01:15:27,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-12-23 01:15:27,017 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 28 states. [2020-12-23 01:15:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:27,626 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-12-23 01:15:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 01:15:27,627 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-12-23 01:15:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:27,628 INFO L225 Difference]: With dead ends: 94 [2020-12-23 01:15:27,628 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 01:15:27,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 01:15:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 01:15:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-12-23 01:15:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 01:15:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-12-23 01:15:27,642 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 56 [2020-12-23 01:15:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:27,643 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-12-23 01:15:27,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 01:15:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-12-23 01:15:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 01:15:27,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:27,645 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:27,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 01:15:27,860 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:27,861 INFO L82 PathProgramCache]: Analyzing trace with hash -11660232, now seen corresponding path program 12 times [2020-12-23 01:15:27,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:27,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870237946] [2020-12-23 01:15:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:28,687 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-12-23 01:15:28,865 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2020-12-23 01:15:29,041 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2020-12-23 01:15:29,209 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-12-23 01:15:29,384 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-12-23 01:15:29,599 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-12-23 01:15:29,808 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-12-23 01:15:30,059 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-12-23 01:15:30,316 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-12-23 01:15:30,570 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-23 01:15:30,873 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-12-23 01:15:31,161 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-12-23 01:15:31,450 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-12-23 01:15:31,680 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 01:15:31,923 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 01:15:32,169 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 01:15:32,428 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-23 01:15:32,667 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-12-23 01:15:32,954 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-12-23 01:15:33,204 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-12-23 01:15:33,482 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-12-23 01:15:33,713 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-12-23 01:15:33,940 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-23 01:15:34,378 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-12-23 01:15:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:35,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870237946] [2020-12-23 01:15:35,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408512550] [2020-12-23 01:15:35,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:35,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-23 01:15:35,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:35,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 68 conjunts are in the unsatisfiable core [2020-12-23 01:15:35,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:35,810 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2020-12-23 01:15:35,812 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:35,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:35,822 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:35,822 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 01:15:36,036 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:15:36,037 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:36,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:36,053 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:36,054 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-23 01:15:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:36,292 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2020-12-23 01:15:36,293 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:36,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:36,314 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:36,314 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-12-23 01:15:36,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:36,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:36,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:36,589 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2020-12-23 01:15:36,591 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:36,615 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:36,616 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:36,617 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2020-12-23 01:15:37,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,091 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2020-12-23 01:15:37,094 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:37,124 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:37,125 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:37,126 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2020-12-23 01:15:37,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,639 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2020-12-23 01:15:37,642 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:37,679 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:37,681 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:37,681 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2020-12-23 01:15:37,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:37,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,002 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-12-23 01:15:38,002 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:38,003 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 222 [2020-12-23 01:15:38,007 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:38,163 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-12-23 01:15:38,164 INFO L625 ElimStorePlain]: treesize reduction 92, result has 48.0 percent of original size [2020-12-23 01:15:38,165 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:38,165 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:85 [2020-12-23 01:15:38,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:15:38,805 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:15:38,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:15:38,808 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:15:38,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:15:38,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:15:38,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:15:38,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:15:38,821 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:38,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:38,953 INFO L244 Elim1Store]: Index analysis took 122 ms [2020-12-23 01:15:39,152 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-12-23 01:15:39,152 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:39,153 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 312 [2020-12-23 01:15:39,160 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:39,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,193 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:39,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,238 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 66 [2020-12-23 01:15:39,242 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:39,250 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:15:39,250 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:39,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,359 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 75 [2020-12-23 01:15:39,362 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:39,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:15:39,371 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:39,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,394 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:39,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:39,442 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 66 [2020-12-23 01:15:39,445 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:39,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:15:39,453 INFO L547 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:39,946 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-12-23 01:15:39,947 INFO L625 ElimStorePlain]: treesize reduction 115, result has 71.6 percent of original size [2020-12-23 01:15:39,949 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2020-12-23 01:15:39,950 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 1 variables, input treesize:641, output treesize:290 [2020-12-23 01:15:40,334 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-12-23 01:15:40,347 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:15:40,792 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 01:15:40,800 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:15:41,116 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-12-23 01:15:41,435 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 01:15:41,452 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,581 INFO L244 Elim1Store]: Index analysis took 115 ms [2020-12-23 01:15:41,634 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:41,634 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 19 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 141 [2020-12-23 01:15:41,638 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:41,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:41,692 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 80 [2020-12-23 01:15:41,695 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:41,980 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 01:15:41,981 INFO L625 ElimStorePlain]: treesize reduction 6, result has 96.7 percent of original size [2020-12-23 01:15:41,985 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:15:41,985 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:184, output treesize:176 [2020-12-23 01:15:42,321 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-23 01:15:42,695 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-23 01:15:42,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:42,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,752 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:42,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,803 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:42,840 INFO L244 Elim1Store]: Index analysis took 108 ms [2020-12-23 01:15:42,842 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 87 [2020-12-23 01:15:42,845 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:42,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,882 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:42,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:42,932 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:42,933 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 148 [2020-12-23 01:15:42,937 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:43,232 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-12-23 01:15:43,233 INFO L625 ElimStorePlain]: treesize reduction 14, result has 92.8 percent of original size [2020-12-23 01:15:43,236 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:15:43,236 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:234, output treesize:180 [2020-12-23 01:15:43,807 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-12-23 01:15:43,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:43,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,869 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:43,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,941 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:43,958 INFO L244 Elim1Store]: Index analysis took 118 ms [2020-12-23 01:15:43,960 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 87 [2020-12-23 01:15:43,962 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:43,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:43,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,015 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:44,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:44,058 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:44,059 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 148 [2020-12-23 01:15:44,063 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:44,343 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-12-23 01:15:44,343 INFO L625 ElimStorePlain]: treesize reduction 31, result has 85.6 percent of original size [2020-12-23 01:15:44,346 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:15:44,346 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:226, output treesize:184 [2020-12-23 01:15:44,744 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-12-23 01:15:45,168 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-23 01:15:45,181 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:45,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,238 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:45,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,311 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:45,322 INFO L244 Elim1Store]: Index analysis took 123 ms [2020-12-23 01:15:45,324 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 90 [2020-12-23 01:15:45,327 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:45,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,381 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:45,415 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:45,415 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 151 [2020-12-23 01:15:45,419 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:45,723 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-12-23 01:15:45,724 INFO L625 ElimStorePlain]: treesize reduction 74, result has 74.5 percent of original size [2020-12-23 01:15:45,726 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:15:45,727 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:236, output treesize:216 [2020-12-23 01:15:46,377 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-23 01:15:46,396 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:46,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,443 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:46,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,493 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:46,529 INFO L244 Elim1Store]: Index analysis took 119 ms [2020-12-23 01:15:46,531 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 90 [2020-12-23 01:15:46,534 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:46,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,581 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:46,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:46,628 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:46,629 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 153 [2020-12-23 01:15:46,632 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:46,925 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-12-23 01:15:46,926 INFO L625 ElimStorePlain]: treesize reduction 37, result has 85.7 percent of original size [2020-12-23 01:15:46,930 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:15:46,931 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:236, output treesize:222 [2020-12-23 01:15:47,387 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-12-23 01:15:47,841 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-12-23 01:15:47,857 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:47,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,887 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:47,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:47,956 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:48,033 INFO L244 Elim1Store]: Index analysis took 162 ms [2020-12-23 01:15:48,067 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:48,068 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 5 case distinctions, treesize of input 118 treesize of output 163 [2020-12-23 01:15:48,073 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:48,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,094 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:48,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:48,116 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 97 [2020-12-23 01:15:48,119 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:48,422 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-12-23 01:15:48,423 INFO L625 ElimStorePlain]: treesize reduction 38, result has 85.9 percent of original size [2020-12-23 01:15:48,426 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:15:48,427 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:275, output treesize:232 [2020-12-23 01:15:48,900 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-23 01:15:49,328 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-23 01:15:49,344 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:49,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,390 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:49,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,461 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:15:49,485 INFO L244 Elim1Store]: Index analysis took 120 ms [2020-12-23 01:15:49,496 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 99 [2020-12-23 01:15:49,499 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:49,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:49,629 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:49,630 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 5 case distinctions, treesize of input 131 treesize of output 211 [2020-12-23 01:15:49,637 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:49,988 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-12-23 01:15:49,990 INFO L625 ElimStorePlain]: treesize reduction 184, result has 59.3 percent of original size [2020-12-23 01:15:49,992 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:15:49,993 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:286, output treesize:268 [2020-12-23 01:15:50,481 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 01:15:51,007 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-12-23 01:15:51,523 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-12-23 01:15:51,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:51,649 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:51,649 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 34 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 170 [2020-12-23 01:15:51,654 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:51,793 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-12-23 01:15:51,794 INFO L625 ElimStorePlain]: treesize reduction 74, result has 67.0 percent of original size [2020-12-23 01:15:51,799 INFO L547 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. [2020-12-23 01:15:51,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:159, output treesize:150 [2020-12-23 01:15:52,675 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:52,678 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:52,679 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:15:52,681 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:15:52,683 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:52,684 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:15:52,688 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:52,691 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:52,692 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:15:52,695 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:15:52,698 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:52,699 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:15:52,701 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 01:15:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:52,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:52,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 77 [2020-12-23 01:15:52,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064888017] [2020-12-23 01:15:52,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-12-23 01:15:52,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:52,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-12-23 01:15:52,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=5355, Unknown=0, NotChecked=0, Total=5852 [2020-12-23 01:15:52,956 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 77 states. [2020-12-23 01:15:57,448 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 43 [2020-12-23 01:15:57,964 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 60 [2020-12-23 01:15:58,496 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 70 [2020-12-23 01:15:59,072 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 56 [2020-12-23 01:15:59,563 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 53 [2020-12-23 01:16:00,105 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 52 [2020-12-23 01:16:00,860 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 52 [2020-12-23 01:16:01,777 WARN L197 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 56 [2020-12-23 01:16:02,406 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 63 [2020-12-23 01:16:03,088 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 65 [2020-12-23 01:16:03,730 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 59 [2020-12-23 01:16:04,589 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 68 [2020-12-23 01:16:05,352 WARN L197 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 67 [2020-12-23 01:16:06,035 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 60 [2020-12-23 01:16:06,818 WARN L197 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 56 [2020-12-23 01:16:07,557 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 59 [2020-12-23 01:16:08,178 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 68 [2020-12-23 01:16:08,588 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 58 [2020-12-23 01:16:09,253 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 64 [2020-12-23 01:16:09,731 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 59 [2020-12-23 01:16:10,160 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 58 [2020-12-23 01:16:14,832 WARN L197 SmtUtils]: Spent 4.28 s on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2020-12-23 01:16:15,374 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 60 [2020-12-23 01:16:17,443 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 59 [2020-12-23 01:16:18,126 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 60 [2020-12-23 01:16:18,680 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 61 [2020-12-23 01:16:19,272 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 72 [2020-12-23 01:16:19,993 WARN L197 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 70 [2020-12-23 01:16:20,492 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 64 [2020-12-23 01:16:20,990 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 67 [2020-12-23 01:16:21,585 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 66 [2020-12-23 01:16:22,322 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 63 [2020-12-23 01:16:22,827 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 70 [2020-12-23 01:16:23,542 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 69 [2020-12-23 01:16:24,230 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 71 [2020-12-23 01:16:24,942 WARN L197 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 71 [2020-12-23 01:16:25,721 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 69 [2020-12-23 01:16:26,710 WARN L197 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 81 [2020-12-23 01:16:27,699 WARN L197 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 90 [2020-12-23 01:16:28,431 WARN L197 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 87 [2020-12-23 01:16:29,443 WARN L197 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 94 [2020-12-23 01:16:30,215 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 67 [2020-12-23 01:16:31,177 WARN L197 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 82 [2020-12-23 01:16:32,197 WARN L197 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 95 [2020-12-23 01:16:33,231 WARN L197 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 84 [2020-12-23 01:16:34,189 WARN L197 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 67 [2020-12-23 01:16:35,054 WARN L197 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 76 [2020-12-23 01:16:35,657 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 73 [2020-12-23 01:16:36,323 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 75 [2020-12-23 01:16:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:36,403 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-12-23 01:16:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-12-23 01:16:36,404 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 59 [2020-12-23 01:16:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:36,405 INFO L225 Difference]: With dead ends: 115 [2020-12-23 01:16:36,405 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 01:16:36,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6375 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=1698, Invalid=18608, Unknown=0, NotChecked=0, Total=20306 [2020-12-23 01:16:36,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 01:16:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 64. [2020-12-23 01:16:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 01:16:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-12-23 01:16:36,422 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 59 [2020-12-23 01:16:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:36,422 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-12-23 01:16:36,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-12-23 01:16:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-12-23 01:16:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 01:16:36,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:36,423 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:36,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 01:16:36,624 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:36,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:36,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2118662769, now seen corresponding path program 13 times [2020-12-23 01:16:36,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:36,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996360833] [2020-12-23 01:16:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 95 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:37,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996360833] [2020-12-23 01:16:37,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654891246] [2020-12-23 01:16:37,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:37,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 01:16:37,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:37,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:37,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2020-12-23 01:16:37,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073618429] [2020-12-23 01:16:37,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 01:16:37,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 01:16:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-12-23 01:16:37,814 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 31 states. [2020-12-23 01:16:38,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:38,691 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-12-23 01:16:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 01:16:38,692 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2020-12-23 01:16:38,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:38,693 INFO L225 Difference]: With dead ends: 103 [2020-12-23 01:16:38,693 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 01:16:38,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 01:16:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 01:16:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2020-12-23 01:16:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 01:16:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-12-23 01:16:38,709 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 62 [2020-12-23 01:16:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:38,709 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-12-23 01:16:38,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 01:16:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-12-23 01:16:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 01:16:38,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:38,710 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:38,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:38,918 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:38,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:38,918 INFO L82 PathProgramCache]: Analyzing trace with hash 37931379, now seen corresponding path program 14 times [2020-12-23 01:16:38,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:38,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186341044] [2020-12-23 01:16:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:39,782 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2020-12-23 01:16:40,235 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-23 01:16:40,402 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-12-23 01:16:40,632 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-12-23 01:16:40,854 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-12-23 01:16:41,139 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-12-23 01:16:41,393 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-12-23 01:16:41,684 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-23 01:16:42,025 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-12-23 01:16:42,325 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-12-23 01:16:42,594 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 01:16:42,882 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 01:16:43,171 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 01:16:43,489 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-23 01:16:43,749 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-12-23 01:16:44,197 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-12-23 01:16:44,531 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-23 01:16:44,823 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-12-23 01:16:45,079 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-12-23 01:16:45,357 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-12-23 01:16:45,588 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 01:16:45,824 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-12-23 01:16:46,055 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 01:16:46,298 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-12-23 01:16:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 24 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:47,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186341044] [2020-12-23 01:16:47,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299627315] [2020-12-23 01:16:47,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:47,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:16:47,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:47,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-23 01:16:47,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:47,725 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2020-12-23 01:16:47,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:47,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:47,738 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:47,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:16:47,950 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:47,951 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:47,963 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:47,964 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:47,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:16:48,241 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:48,241 INFO L382 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 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:16:48,244 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:48,284 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:16:48,286 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:48,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:16:48,761 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-12-23 01:16:48,762 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:16:48,763 INFO L382 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 34 treesize of output 96 [2020-12-23 01:16:48,765 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:48,843 INFO L625 ElimStorePlain]: treesize reduction 44, result has 47.6 percent of original size [2020-12-23 01:16:48,844 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:48,844 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:16:49,287 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-12-23 01:16:49,288 INFO L348 Elim1Store]: treesize reduction 81, result has 52.9 percent of original size [2020-12-23 01:16:49,289 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 111 [2020-12-23 01:16:49,292 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:49,387 INFO L625 ElimStorePlain]: treesize reduction 44, result has 55.1 percent of original size [2020-12-23 01:16:49,388 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:49,389 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2020-12-23 01:16:49,950 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-12-23 01:16:49,951 INFO L348 Elim1Store]: treesize reduction 72, result has 68.6 percent of original size [2020-12-23 01:16:49,951 INFO L382 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 10 case distinctions, treesize of input 52 treesize of output 180 [2020-12-23 01:16:49,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,083 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-12-23 01:16:50,084 INFO L625 ElimStorePlain]: treesize reduction 88, result has 39.7 percent of original size [2020-12-23 01:16:50,086 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,086 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2020-12-23 01:16:50,779 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2020-12-23 01:16:50,780 INFO L348 Elim1Store]: treesize reduction 120, result has 62.0 percent of original size [2020-12-23 01:16:50,780 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 222 [2020-12-23 01:16:50,785 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,940 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-12-23 01:16:50,942 INFO L625 ElimStorePlain]: treesize reduction 110, result has 37.9 percent of original size [2020-12-23 01:16:50,943 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,943 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:67 [2020-12-23 01:16:51,757 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2020-12-23 01:16:51,758 INFO L348 Elim1Store]: treesize reduction 180, result has 56.6 percent of original size [2020-12-23 01:16:51,758 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 264 [2020-12-23 01:16:51,762 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:51,951 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-12-23 01:16:51,952 INFO L625 ElimStorePlain]: treesize reduction 132, result has 36.5 percent of original size [2020-12-23 01:16:51,953 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:51,954 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:80, output treesize:76 [2020-12-23 01:16:52,908 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 79 [2020-12-23 01:16:52,909 INFO L348 Elim1Store]: treesize reduction 252, result has 52.1 percent of original size [2020-12-23 01:16:52,910 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 79 treesize of output 306 [2020-12-23 01:16:52,915 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:53,124 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2020-12-23 01:16:53,125 INFO L625 ElimStorePlain]: treesize reduction 154, result has 35.6 percent of original size [2020-12-23 01:16:53,126 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:53,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:85 [2020-12-23 01:16:54,003 INFO L348 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2020-12-23 01:16:54,003 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2020-12-23 01:16:54,006 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:54,062 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:54,064 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:54,064 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:93 [2020-12-23 01:16:54,842 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:16:54,843 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:16:54,844 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 232 [2020-12-23 01:16:54,850 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:55,011 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-12-23 01:16:55,012 INFO L625 ElimStorePlain]: treesize reduction 174, result has 36.7 percent of original size [2020-12-23 01:16:55,018 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:55,018 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:101 [2020-12-23 01:16:55,736 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:16:55,737 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:16:55,738 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 232 [2020-12-23 01:16:55,744 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:55,903 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2020-12-23 01:16:55,904 INFO L625 ElimStorePlain]: treesize reduction 162, result has 38.4 percent of original size [2020-12-23 01:16:55,906 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:55,906 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:101 [2020-12-23 01:16:56,963 WARN L197 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 97 [2020-12-23 01:16:56,964 INFO L348 Elim1Store]: treesize reduction 353, result has 39.8 percent of original size [2020-12-23 01:16:56,965 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 364 [2020-12-23 01:16:56,984 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:57,247 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2020-12-23 01:16:57,248 INFO L625 ElimStorePlain]: treesize reduction 320, result has 25.9 percent of original size [2020-12-23 01:16:57,249 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:57,250 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:127, output treesize:112 [2020-12-23 01:16:58,002 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:16:58,003 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:16:58,004 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 232 [2020-12-23 01:16:58,012 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:58,182 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-12-23 01:16:58,184 INFO L625 ElimStorePlain]: treesize reduction 180, result has 39.4 percent of original size [2020-12-23 01:16:58,185 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:58,186 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:117 [2020-12-23 01:16:59,303 WARN L197 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 97 [2020-12-23 01:16:59,305 INFO L348 Elim1Store]: treesize reduction 353, result has 39.8 percent of original size [2020-12-23 01:16:59,305 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 131 treesize of output 368 [2020-12-23 01:16:59,314 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:59,563 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-12-23 01:16:59,564 INFO L625 ElimStorePlain]: treesize reduction 391, result has 22.0 percent of original size [2020-12-23 01:16:59,565 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:59,566 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:144, output treesize:110 [2020-12-23 01:17:00,362 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:17:00,363 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:17:00,363 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 125 treesize of output 236 [2020-12-23 01:17:00,370 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:00,532 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2020-12-23 01:17:00,533 INFO L625 ElimStorePlain]: treesize reduction 128, result has 44.6 percent of original size [2020-12-23 01:17:00,535 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:00,535 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:138, output treesize:103 [2020-12-23 01:17:01,252 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:17:01,254 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:17:01,255 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 113 treesize of output 234 [2020-12-23 01:17:01,260 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:01,421 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-12-23 01:17:01,422 INFO L625 ElimStorePlain]: treesize reduction 128, result has 44.6 percent of original size [2020-12-23 01:17:01,424 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:01,425 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:126, output treesize:103 [2020-12-23 01:17:01,942 INFO L348 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2020-12-23 01:17:01,942 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 111 [2020-12-23 01:17:01,945 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:02,004 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:02,007 INFO L547 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. [2020-12-23 01:17:02,007 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:121, output treesize:98 [2020-12-23 01:17:02,305 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:02,307 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:02,311 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:02,312 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:17:02,316 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:02,318 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:02,319 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:02,321 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:02,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:02,326 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:17:02,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:17:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:02,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:02,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 37] total 77 [2020-12-23 01:17:02,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777523941] [2020-12-23 01:17:02,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-12-23 01:17:02,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:02,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-12-23 01:17:02,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=5396, Unknown=0, NotChecked=0, Total=5852 [2020-12-23 01:17:02,567 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 77 states. [2020-12-23 01:17:05,706 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2020-12-23 01:17:06,034 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-12-23 01:17:06,368 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-12-23 01:17:06,705 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-12-23 01:17:07,076 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-12-23 01:17:07,479 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-12-23 01:17:07,834 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2020-12-23 01:17:08,216 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-12-23 01:17:08,610 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2020-12-23 01:17:08,994 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2020-12-23 01:17:09,452 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 48 [2020-12-23 01:17:10,011 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 55 [2020-12-23 01:17:10,503 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 51 [2020-12-23 01:17:11,046 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 58 [2020-12-23 01:17:11,558 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 53 [2020-12-23 01:17:11,847 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-12-23 01:17:12,647 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 54 [2020-12-23 01:17:13,426 WARN L197 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-12-23 01:17:13,731 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2020-12-23 01:17:14,271 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2020-12-23 01:17:14,679 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 58 [2020-12-23 01:17:15,207 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2020-12-23 01:17:15,782 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2020-12-23 01:17:16,342 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 58 [2020-12-23 01:17:16,711 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2020-12-23 01:17:17,142 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2020-12-23 01:17:17,483 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-12-23 01:17:17,907 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 63 [2020-12-23 01:17:18,304 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2020-12-23 01:17:18,822 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-12-23 01:17:19,241 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 58 [2020-12-23 01:17:19,535 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-23 01:17:20,090 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 62 [2020-12-23 01:17:20,559 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 63 [2020-12-23 01:17:20,849 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-23 01:17:21,304 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-23 01:17:21,842 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 66 [2020-12-23 01:17:22,146 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-23 01:17:22,756 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 61 [2020-12-23 01:17:23,272 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 63 [2020-12-23 01:17:23,581 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-23 01:17:24,106 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 01:17:24,737 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 66 [2020-12-23 01:17:25,056 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 01:17:25,919 WARN L197 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 88 [2020-12-23 01:17:26,589 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 75 [2020-12-23 01:17:26,910 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-23 01:17:27,786 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 78 [2020-12-23 01:17:28,462 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 59 [2020-12-23 01:17:28,810 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-23 01:17:29,200 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 01:17:29,978 WARN L197 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-12-23 01:17:30,816 WARN L197 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-12-23 01:17:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:30,846 INFO L93 Difference]: Finished difference Result 158 states and 170 transitions. [2020-12-23 01:17:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-12-23 01:17:30,848 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 65 [2020-12-23 01:17:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:30,849 INFO L225 Difference]: With dead ends: 158 [2020-12-23 01:17:30,849 INFO L226 Difference]: Without dead ends: 112 [2020-12-23 01:17:30,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6460 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=1637, Invalid=17823, Unknown=0, NotChecked=0, Total=19460 [2020-12-23 01:17:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-23 01:17:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 70. [2020-12-23 01:17:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 01:17:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-12-23 01:17:30,870 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 65 [2020-12-23 01:17:30,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:30,870 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-12-23 01:17:30,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-12-23 01:17:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-12-23 01:17:30,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 01:17:30,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:30,871 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:31,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 01:17:31,085 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:31,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:31,086 INFO L82 PathProgramCache]: Analyzing trace with hash 2033596246, now seen corresponding path program 15 times [2020-12-23 01:17:31,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:31,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308704559] [2020-12-23 01:17:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 120 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:31,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308704559] [2020-12-23 01:17:31,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462599268] [2020-12-23 01:17:31,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:31,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-23 01:17:31,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:31,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 01:17:31,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:32,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:32,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2020-12-23 01:17:32,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604027584] [2020-12-23 01:17:32,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 01:17:32,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:32,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 01:17:32,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 01:17:32,817 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 34 states. [2020-12-23 01:17:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:33,833 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-12-23 01:17:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 01:17:33,835 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 68 [2020-12-23 01:17:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:33,836 INFO L225 Difference]: With dead ends: 112 [2020-12-23 01:17:33,836 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 01:17:33,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=454, Invalid=1438, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 01:17:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 01:17:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-12-23 01:17:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 01:17:33,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-12-23 01:17:33,859 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2020-12-23 01:17:33,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:33,860 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-12-23 01:17:33,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 01:17:33,860 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-12-23 01:17:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 01:17:33,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:33,860 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:34,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:34,061 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:34,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1631270422, now seen corresponding path program 16 times [2020-12-23 01:17:34,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:34,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006994756] [2020-12-23 01:17:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:34,846 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 28 [2020-12-23 01:17:35,003 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-12-23 01:17:35,149 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-12-23 01:17:35,299 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-12-23 01:17:35,513 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-23 01:17:35,724 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-12-23 01:17:35,997 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-12-23 01:17:36,241 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-12-23 01:17:36,580 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-12-23 01:17:36,865 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-12-23 01:17:37,281 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-12-23 01:17:37,608 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-12-23 01:17:38,054 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-23 01:17:38,519 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 01:17:38,922 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-12-23 01:17:39,270 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-12-23 01:17:39,624 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-12-23 01:17:39,991 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-12-23 01:17:40,410 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-12-23 01:17:40,778 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-12-23 01:17:41,198 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-12-23 01:17:41,573 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-12-23 01:17:42,022 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-12-23 01:17:42,401 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-12-23 01:17:42,708 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-12-23 01:17:43,009 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-12-23 01:17:43,395 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-23 01:17:43,696 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 01:17:44,004 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-12-23 01:17:44,264 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 01:17:44,534 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 01:17:44,795 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-23 01:17:45,060 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-23 01:17:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 36 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:46,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006994756] [2020-12-23 01:17:46,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706701204] [2020-12-23 01:17:46,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:46,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:17:46,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:46,212 WARN L261 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-23 01:17:46,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:46,232 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2020-12-23 01:17:46,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:46,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:46,247 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:46,247 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:17:46,598 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:17:46,600 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:46,616 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:46,617 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:46,617 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:17:46,926 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:46,926 INFO L382 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 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:17:46,929 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:46,976 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:17:46,978 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:46,978 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:17:47,403 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-12-23 01:17:47,404 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:17:47,405 INFO L382 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 34 treesize of output 96 [2020-12-23 01:17:47,407 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:47,484 INFO L625 ElimStorePlain]: treesize reduction 44, result has 45.7 percent of original size [2020-12-23 01:17:47,485 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:47,486 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2020-12-23 01:17:47,983 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-12-23 01:17:47,984 INFO L348 Elim1Store]: treesize reduction 81, result has 52.9 percent of original size [2020-12-23 01:17:47,984 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 111 [2020-12-23 01:17:47,988 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:48,078 INFO L625 ElimStorePlain]: treesize reduction 44, result has 52.7 percent of original size [2020-12-23 01:17:48,079 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:48,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2020-12-23 01:17:48,640 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2020-12-23 01:17:48,641 INFO L348 Elim1Store]: treesize reduction 168, result has 38.0 percent of original size [2020-12-23 01:17:48,642 INFO L382 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 10 case distinctions, treesize of input 58 treesize of output 126 [2020-12-23 01:17:48,645 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:48,745 INFO L625 ElimStorePlain]: treesize reduction 44, result has 58.1 percent of original size [2020-12-23 01:17:48,747 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:48,747 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2020-12-23 01:17:49,386 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2020-12-23 01:17:49,388 INFO L348 Elim1Store]: treesize reduction 273, result has 29.6 percent of original size [2020-12-23 01:17:49,388 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 141 [2020-12-23 01:17:49,392 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:49,499 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-23 01:17:49,500 INFO L625 ElimStorePlain]: treesize reduction 44, result has 62.4 percent of original size [2020-12-23 01:17:49,501 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:49,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:73 [2020-12-23 01:17:50,250 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 49 [2020-12-23 01:17:50,251 INFO L348 Elim1Store]: treesize reduction 396, result has 24.3 percent of original size [2020-12-23 01:17:50,251 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 156 [2020-12-23 01:17:50,255 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:50,383 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 01:17:50,384 INFO L625 ElimStorePlain]: treesize reduction 44, result has 65.9 percent of original size [2020-12-23 01:17:50,386 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:50,386 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:85 [2020-12-23 01:17:51,203 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 54 [2020-12-23 01:17:51,204 INFO L348 Elim1Store]: treesize reduction 537, result has 20.6 percent of original size [2020-12-23 01:17:51,204 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 94 treesize of output 171 [2020-12-23 01:17:51,207 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:51,345 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-23 01:17:51,346 INFO L625 ElimStorePlain]: treesize reduction 44, result has 68.8 percent of original size [2020-12-23 01:17:51,348 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:51,348 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:97 [2020-12-23 01:17:52,405 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 45 [2020-12-23 01:17:52,406 INFO L348 Elim1Store]: treesize reduction 544, result has 11.8 percent of original size [2020-12-23 01:17:52,407 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2020-12-23 01:17:52,410 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:52,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:52,466 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:52,466 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2020-12-23 01:17:53,010 INFO L348 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2020-12-23 01:17:53,010 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2020-12-23 01:17:53,014 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:53,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:53,079 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:53,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:103, output treesize:99 [2020-12-23 01:17:54,075 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:17:54,077 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:17:54,077 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 258 [2020-12-23 01:17:54,086 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:54,291 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2020-12-23 01:17:54,292 INFO L625 ElimStorePlain]: treesize reduction 186, result has 36.5 percent of original size [2020-12-23 01:17:54,294 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:54,294 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2020-12-23 01:17:55,208 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:17:55,209 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:17:55,210 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 258 [2020-12-23 01:17:55,216 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:55,393 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-12-23 01:17:55,394 INFO L625 ElimStorePlain]: treesize reduction 150, result has 41.6 percent of original size [2020-12-23 01:17:55,395 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:55,395 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2020-12-23 01:17:56,719 WARN L197 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 108 [2020-12-23 01:17:56,721 INFO L348 Elim1Store]: treesize reduction 449, result has 36.8 percent of original size [2020-12-23 01:17:56,721 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 123 treesize of output 405 [2020-12-23 01:17:56,734 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:57,035 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 63 [2020-12-23 01:17:57,036 INFO L625 ElimStorePlain]: treesize reduction 382, result has 23.6 percent of original size [2020-12-23 01:17:57,038 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:57,039 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:133, output treesize:118 [2020-12-23 01:17:57,976 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:17:57,977 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:17:57,978 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 258 [2020-12-23 01:17:57,985 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:58,179 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2020-12-23 01:17:58,180 INFO L625 ElimStorePlain]: treesize reduction 196, result has 36.2 percent of original size [2020-12-23 01:17:58,182 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:58,182 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:111 [2020-12-23 01:17:59,206 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:17:59,208 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:17:59,208 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 122 treesize of output 260 [2020-12-23 01:17:59,215 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:59,417 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2020-12-23 01:17:59,418 INFO L625 ElimStorePlain]: treesize reduction 208, result has 37.0 percent of original size [2020-12-23 01:17:59,420 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:59,420 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:122 [2020-12-23 01:18:00,398 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:18:00,399 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:18:00,400 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 122 treesize of output 260 [2020-12-23 01:18:00,407 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:00,605 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2020-12-23 01:18:00,607 INFO L625 ElimStorePlain]: treesize reduction 206, result has 37.6 percent of original size [2020-12-23 01:18:00,608 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:00,608 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:124 [2020-12-23 01:18:01,692 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:18:01,693 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:18:01,694 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 135 treesize of output 263 [2020-12-23 01:18:01,702 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:01,909 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-12-23 01:18:01,910 INFO L625 ElimStorePlain]: treesize reduction 180, result has 40.8 percent of original size [2020-12-23 01:18:01,912 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:01,913 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:124 [2020-12-23 01:18:02,946 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:18:02,947 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:18:02,948 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 135 treesize of output 263 [2020-12-23 01:18:02,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:03,161 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-12-23 01:18:03,162 INFO L625 ElimStorePlain]: treesize reduction 172, result has 40.7 percent of original size [2020-12-23 01:18:03,164 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:03,164 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:145, output treesize:118 [2020-12-23 01:18:03,829 INFO L348 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2020-12-23 01:18:03,831 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 127 treesize of output 124 [2020-12-23 01:18:03,834 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:03,898 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:03,901 INFO L547 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. [2020-12-23 01:18:03,901 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:134, output treesize:104 [2020-12-23 01:18:04,253 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:04,256 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:04,261 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:04,262 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:18:04,267 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:04,269 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:04,271 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:04,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:04,275 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:04,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:18:04,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:18:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:04,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:18:04,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 39] total 83 [2020-12-23 01:18:04,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778390900] [2020-12-23 01:18:04,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-12-23 01:18:04,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:04,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-12-23 01:18:04,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=6257, Unknown=0, NotChecked=0, Total=6806 [2020-12-23 01:18:04,562 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 83 states. [2020-12-23 01:18:07,944 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-12-23 01:18:08,331 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-12-23 01:18:08,699 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-12-23 01:18:09,075 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-12-23 01:18:09,496 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-12-23 01:18:09,901 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-12-23 01:18:10,356 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-12-23 01:18:10,874 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-12-23 01:18:11,313 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-12-23 01:18:11,763 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-12-23 01:18:12,314 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-12-23 01:18:12,798 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-12-23 01:18:13,275 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-12-23 01:18:13,895 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-12-23 01:18:14,396 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2020-12-23 01:18:15,013 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 51 [2020-12-23 01:18:15,812 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 58 [2020-12-23 01:18:16,465 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 55 [2020-12-23 01:18:17,264 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 56 [2020-12-23 01:18:17,616 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2020-12-23 01:18:18,571 WARN L197 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 57