/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/eqn2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:17:03,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:17:03,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:17:03,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:17:03,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:17:03,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:17:03,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:17:03,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:17:03,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:17:03,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:17:03,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:17:03,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:17:03,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:17:03,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:17:03,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:17:03,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:17:03,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:17:03,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:17:03,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:17:03,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:17:03,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:17:03,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:17:03,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:17:03,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:17:03,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:17:03,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:17:03,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:17:03,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:17:03,902 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 01:17:03,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:17:03,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:17:03,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:17:03,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:17:03,974 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:17:03,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:17:03,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:17:03,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:17:03,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:17:03,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:17:03,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:17:03,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:17:03,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:17:03,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:17:03,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:17:03,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:17:03,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:17:03,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:17:03,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:17:03,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:17:03,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:17:03,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:17:03,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:17:03,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:17:03,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:17:03,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:17:04,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:17:04,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:17:04,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:17:04,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:17:04,456 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:17:04,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn2.c [2020-12-23 01:17:04,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4b0a51df0/78839fb9c0654c22997a384d505dc5f4/FLAG8bd7c3c59 [2020-12-23 01:17:05,348 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:17:05,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn2.c [2020-12-23 01:17:05,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4b0a51df0/78839fb9c0654c22997a384d505dc5f4/FLAG8bd7c3c59 [2020-12-23 01:17:05,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4b0a51df0/78839fb9c0654c22997a384d505dc5f4 [2020-12-23 01:17:05,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:17:05,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:17:05,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:17:05,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:17:05,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:17:05,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:17:05" (1/1) ... [2020-12-23 01:17:05,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772f77f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:05, skipping insertion in model container [2020-12-23 01:17:05,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:17:05" (1/1) ... [2020-12-23 01:17:05,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:17:05,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:17:05,935 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/eqn2.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],StructAccessExpression[IdentifierExpression[~a~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],StructAccessExpression[IdentifierExpression[~b~0,],offset]]] 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[8],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[~b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~b~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:17:05,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:17:05,984 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:17:06,002 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/eqn2.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],StructAccessExpression[IdentifierExpression[~a~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~b~0,],base],StructAccessExpression[IdentifierExpression[~b~0,],offset]]] 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[8],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[~b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~b~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[8],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 01:17:06,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:17:06,040 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:17:06,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06 WrapperNode [2020-12-23 01:17:06,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:17:06,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:17:06,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:17:06,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:17:06,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:17:06,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:17:06,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:17:06,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:17:06,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (1/1) ... [2020-12-23 01:17:06,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:17:06,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:17:06,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:17:06,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:17:06,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (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 01:17:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:17:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:17:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:17:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:17:06,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:17:06,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:17:06,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:17:06,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:17:06,626 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 01:17:06,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:17:06 BoogieIcfgContainer [2020-12-23 01:17:06,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:17:06,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:17:06,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:17:06,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:17:06,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:17:05" (1/3) ... [2020-12-23 01:17:06,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a25a904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:17:06, skipping insertion in model container [2020-12-23 01:17:06,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:17:06" (2/3) ... [2020-12-23 01:17:06,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a25a904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:17:06, skipping insertion in model container [2020-12-23 01:17:06,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:17:06" (3/3) ... [2020-12-23 01:17:06,643 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2.c [2020-12-23 01:17:06,654 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:17:06,661 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:17:06,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:17:06,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:17:06,763 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:17:06,763 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:17:06,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:17:06,763 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:17:06,764 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:17:06,767 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:17:06,767 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:17:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-23 01:17:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:17:06,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:06,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:06,821 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:06,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2020-12-23 01:17:06,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:06,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860233092] [2020-12-23 01:17:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:07,172 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 01:17:07,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860233092] [2020-12-23 01:17:07,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:17:07,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:17:07,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550227707] [2020-12-23 01:17:07,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:17:07,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:07,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:17:07,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:17:07,222 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-23 01:17:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:07,250 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2020-12-23 01:17:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:17:07,252 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-23 01:17:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:07,272 INFO L225 Difference]: With dead ends: 38 [2020-12-23 01:17:07,273 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 01:17:07,282 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 01:17:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 01:17:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 01:17:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 01:17:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-23 01:17:07,326 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-12-23 01:17:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:07,327 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-23 01:17:07,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:17:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-23 01:17:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:17:07,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:07,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:07,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:17:07,332 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2020-12-23 01:17:07,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:07,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788623202] [2020-12-23 01:17:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:07,399 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:07,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054182413] [2020-12-23 01:17:07,400 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 01:17:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:07,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 01:17:07,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:07,699 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:07,700 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 1 case distinctions, treesize of input 27 treesize of output 39 [2020-12-23 01:17:07,706 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:07,744 INFO L625 ElimStorePlain]: treesize reduction 16, result has 64.4 percent of original size [2020-12-23 01:17:07,754 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:07,755 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:14 [2020-12-23 01:17:07,831 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 01:17:07,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788623202] [2020-12-23 01:17:07,832 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:17:07,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054182413] [2020-12-23 01:17:07,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:17:07,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 01:17:07,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082268826] [2020-12-23 01:17:07,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 01:17:07,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:07,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 01:17:07,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 01:17:07,838 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2020-12-23 01:17:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:08,207 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-12-23 01:17:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:17:08,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-23 01:17:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:08,211 INFO L225 Difference]: With dead ends: 39 [2020-12-23 01:17:08,212 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 01:17:08,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-12-23 01:17:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 01:17:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 23. [2020-12-23 01:17:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 01:17:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-23 01:17:08,232 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-12-23 01:17:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:08,232 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-23 01:17:08,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 01:17:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-23 01:17:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:17:08,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:08,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:08,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 01:17:08,451 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:08,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2020-12-23 01:17:08,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:08,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022496303] [2020-12-23 01:17:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:08,511 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:08,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349872490] [2020-12-23 01:17:08,512 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 01:17:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:08,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 01:17:08,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:08,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022496303] [2020-12-23 01:17:08,637 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:17:08,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349872490] [2020-12-23 01:17:08,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:17:08,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 01:17:08,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153404220] [2020-12-23 01:17:08,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 01:17:08,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:08,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 01:17:08,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:17:08,640 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-12-23 01:17:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:08,724 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-12-23 01:17:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 01:17:08,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 01:17:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:08,725 INFO L225 Difference]: With dead ends: 49 [2020-12-23 01:17:08,726 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 01:17:08,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:17:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 01:17:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2020-12-23 01:17:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 01:17:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-23 01:17:08,733 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-12-23 01:17:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:08,734 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-23 01:17:08,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 01:17:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-23 01:17:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:17:08,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:08,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:08,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:08,949 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:08,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2020-12-23 01:17:08,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:08,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366829024] [2020-12-23 01:17:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:08,977 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:08,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025720908] [2020-12-23 01:17:08,978 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 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 01:17:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:09,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 01:17:09,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:09,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366829024] [2020-12-23 01:17:09,109 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:17:09,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025720908] [2020-12-23 01:17:09,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:17:09,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 01:17:09,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545375231] [2020-12-23 01:17:09,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 01:17:09,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:09,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 01:17:09,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:17:09,114 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-12-23 01:17:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:09,211 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-12-23 01:17:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 01:17:09,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 01:17:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:09,215 INFO L225 Difference]: With dead ends: 44 [2020-12-23 01:17:09,216 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 01:17:09,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:17:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 01:17:09,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2020-12-23 01:17:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 01:17:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-23 01:17:09,237 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2020-12-23 01:17:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:09,238 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-23 01:17:09,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 01:17:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-23 01:17:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:17:09,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:09,239 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:09,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:09,454 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:09,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2020-12-23 01:17:09,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:09,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305215770] [2020-12-23 01:17:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:09,474 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:09,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366917134] [2020-12-23 01:17:09,475 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 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 01:17:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:09,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 01:17:09,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:09,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305215770] [2020-12-23 01:17:09,598 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:17:09,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366917134] [2020-12-23 01:17:09,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:17:09,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 01:17:09,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552190470] [2020-12-23 01:17:09,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 01:17:09,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:09,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 01:17:09,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 01:17:09,614 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 6 states. [2020-12-23 01:17:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:09,697 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-12-23 01:17:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 01:17:09,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 01:17:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:09,698 INFO L225 Difference]: With dead ends: 41 [2020-12-23 01:17:09,699 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 01:17:09,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:17:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 01:17:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2020-12-23 01:17:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 01:17:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-12-23 01:17:09,703 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2020-12-23 01:17:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:09,704 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-12-23 01:17:09,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 01:17:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-12-23 01:17:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:17:09,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:09,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:09,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:09,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:09,922 INFO L82 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2020-12-23 01:17:09,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:09,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103906909] [2020-12-23 01:17:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:09,942 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:09,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27252812] [2020-12-23 01:17:09,942 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 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 01:17:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:10,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 01:17:10,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:10,065 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 01:17:10,067 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:10,073 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:10,080 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-23 01:17:10,083 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:10,096 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:10,099 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:10,099 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:19 [2020-12-23 01:17:10,251 INFO L348 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2020-12-23 01:17:10,252 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 3 case distinctions, treesize of input 41 treesize of output 72 [2020-12-23 01:17:10,256 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:10,283 INFO L625 ElimStorePlain]: treesize reduction 25, result has 65.3 percent of original size [2020-12-23 01:17:10,286 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:10,290 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 01:17:10,291 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:47 [2020-12-23 01:17:10,292 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:10,332 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:10,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:10,421 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:10,510 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:10,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,665 INFO L348 Elim1Store]: treesize reduction 17, result has 83.7 percent of original size [2020-12-23 01:17:10,666 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 172 [2020-12-23 01:17:10,677 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:10,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,703 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:10,704 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 95 [2020-12-23 01:17:10,709 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:10,832 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-12-23 01:17:10,833 INFO L625 ElimStorePlain]: treesize reduction 204, result has 40.2 percent of original size [2020-12-23 01:17:10,855 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2020-12-23 01:17:10,855 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:145, output treesize:137 [2020-12-23 01:17:13,291 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-12-23 01:17:13,340 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-12-23 01:17:13,341 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:13,360 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:13,363 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:13,366 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:17:13,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:13,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:17:13,385 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:17:13,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:13,423 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:13,425 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:17:13,444 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:13,447 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:17:13,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:17:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:13,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103906909] [2020-12-23 01:17:13,487 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:17:13,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27252812] [2020-12-23 01:17:13,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:17:13,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:17:13,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199662159] [2020-12-23 01:17:13,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:17:13,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:13,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:17:13,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=55, Unknown=1, NotChecked=0, Total=72 [2020-12-23 01:17:13,494 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 9 states. [2020-12-23 01:17:14,104 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-12-23 01:17:17,881 WARN L197 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-12-23 01:17:25,505 WARN L197 SmtUtils]: Spent 7.58 s on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2020-12-23 01:17:27,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:27,649 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-12-23 01:17:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:17:27,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-23 01:17:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:27,651 INFO L225 Difference]: With dead ends: 39 [2020-12-23 01:17:27,651 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 01:17:27,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=62, Invalid=177, Unknown=1, NotChecked=0, Total=240 [2020-12-23 01:17:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 01:17:27,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2020-12-23 01:17:27,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 01:17:27,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-23 01:17:27,659 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-12-23 01:17:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:27,659 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-23 01:17:27,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:17:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-23 01:17:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 01:17:27,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:27,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:27,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 01:17:27,862 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:27,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 2 times [2020-12-23 01:17:27,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:27,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022739828] [2020-12-23 01:17:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:27,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:27,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917618429] [2020-12-23 01:17:27,902 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 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 01:17:27,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:17:27,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:27,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:17:27,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:28,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022739828] [2020-12-23 01:17:28,020 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:17:28,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917618429] [2020-12-23 01:17:28,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:17:28,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:17:28,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897716191] [2020-12-23 01:17:28,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:17:28,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:28,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:17:28,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:17:28,023 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-12-23 01:17:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:28,210 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-12-23 01:17:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:17:28,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 01:17:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:28,212 INFO L225 Difference]: With dead ends: 61 [2020-12-23 01:17:28,212 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 01:17:28,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:17:28,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 01:17:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 30. [2020-12-23 01:17:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 01:17:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-12-23 01:17:28,222 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-12-23 01:17:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:28,223 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-12-23 01:17:28,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:17:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-12-23 01:17:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:17:28,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:28,224 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:28,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:28,440 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:28,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:28,440 INFO L82 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2020-12-23 01:17:28,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:28,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361714973] [2020-12-23 01:17:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:28,455 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:28,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697237838] [2020-12-23 01:17:28,455 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 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 01:17:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:28,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 01:17:28,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:28,565 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 01:17:28,567 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:28,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:28,588 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-23 01:17:28,589 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:28,617 INFO L625 ElimStorePlain]: treesize reduction 4, result has 85.7 percent of original size [2020-12-23 01:17:28,618 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:28,618 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:24 [2020-12-23 01:17:28,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:28,656 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:28,657 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 34 treesize of output 40 [2020-12-23 01:17:28,661 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:28,684 INFO L625 ElimStorePlain]: treesize reduction 4, result has 90.5 percent of original size [2020-12-23 01:17:28,685 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:28,686 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:38 [2020-12-23 01:17:28,752 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:28,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:28,774 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:28,775 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 4 case distinctions, treesize of input 51 treesize of output 70 [2020-12-23 01:17:28,782 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:28,804 INFO L625 ElimStorePlain]: treesize reduction 4, result has 89.5 percent of original size [2020-12-23 01:17:28,806 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 01:17:28,807 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:34 [2020-12-23 01:17:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:28,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361714973] [2020-12-23 01:17:28,971 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:17:28,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697237838] [2020-12-23 01:17:28,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:17:28,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 01:17:28,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003431869] [2020-12-23 01:17:28,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:17:28,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:28,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:17:28,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:17:28,980 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 10 states. [2020-12-23 01:17:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:29,617 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-12-23 01:17:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 01:17:29,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-23 01:17:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:29,619 INFO L225 Difference]: With dead ends: 50 [2020-12-23 01:17:29,619 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 01:17:29,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:17:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 01:17:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2020-12-23 01:17:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 01:17:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-12-23 01:17:29,630 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2020-12-23 01:17:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:29,631 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-12-23 01:17:29,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:17:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-12-23 01:17:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:17:29,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:29,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:29,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:29,840 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:29,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:29,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 3 times [2020-12-23 01:17:29,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:29,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010501125] [2020-12-23 01:17:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:29,890 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:17:29,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284990702] [2020-12-23 01:17:29,891 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 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 01:17:29,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 01:17:29,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:29,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 01:17:29,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:30,061 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 01:17:30,063 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:30,081 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:30,143 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:30,143 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 1 case distinctions, treesize of input 37 treesize of output 95 [2020-12-23 01:17:30,147 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:30,222 INFO L625 ElimStorePlain]: treesize reduction 49, result has 53.3 percent of original size [2020-12-23 01:17:30,228 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:30,228 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:54, output treesize:28 [2020-12-23 01:17:30,311 INFO L348 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2020-12-23 01:17:30,312 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 3 case distinctions, treesize of input 41 treesize of output 72 [2020-12-23 01:17:30,317 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:30,368 INFO L625 ElimStorePlain]: treesize reduction 31, result has 61.7 percent of original size [2020-12-23 01:17:30,369 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:30,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2020-12-23 01:17:30,682 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-12-23 01:17:30,683 INFO L348 Elim1Store]: treesize reduction 106, result has 62.0 percent of original size [2020-12-23 01:17:30,683 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 63 treesize of output 204 [2020-12-23 01:17:30,688 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-23 01:17:30,689 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:17:30,690 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-23 01:17:30,690 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:30,691 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 01:17:30,692 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:30,700 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:30,826 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2020-12-23 01:17:30,827 INFO L625 ElimStorePlain]: treesize reduction 181, result has 30.7 percent of original size [2020-12-23 01:17:30,832 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 01:17:30,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:84, output treesize:80 [2020-12-23 01:17:30,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:31,102 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-23 01:17:31,107 INFO L348 Elim1Store]: treesize reduction 34, result has 77.8 percent of original size [2020-12-23 01:17:31,107 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 206 [2020-12-23 01:17:31,120 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:31,239 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-12-23 01:17:31,243 INFO L625 ElimStorePlain]: treesize reduction 169, result has 36.5 percent of original size [2020-12-23 01:17:31,248 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 01:17:31,248 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:103, output treesize:97 [2020-12-23 01:17:31,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:31,735 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2020-12-23 01:17:31,736 INFO L348 Elim1Store]: treesize reduction 103, result has 73.7 percent of original size [2020-12-23 01:17:31,737 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 111 treesize of output 387 [2020-12-23 01:17:31,750 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:31,938 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 59 [2020-12-23 01:17:31,954 INFO L625 ElimStorePlain]: treesize reduction 468, result has 21.2 percent of original size [2020-12-23 01:17:31,970 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-23 01:17:31,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:132, output treesize:126 [2020-12-23 01:17:32,105 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:32,111 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:17:34,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:34,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010501125] [2020-12-23 01:17:34,900 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:17:34,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284990702] [2020-12-23 01:17:34,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:17:34,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 01:17:34,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616230799] [2020-12-23 01:17:34,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 01:17:34,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 01:17:34,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=202, Unknown=1, NotChecked=0, Total=240 [2020-12-23 01:17:34,903 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 16 states. [2020-12-23 01:17:37,038 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-23 01:17:43,675 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-12-23 01:17:46,697 WARN L197 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-12-23 01:17:53,967 WARN L197 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-12-23 01:17:57,124 WARN L197 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 102 [2020-12-23 01:18:03,666 WARN L197 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2020-12-23 01:18:20,673 WARN L197 SmtUtils]: Spent 16.80 s on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2020-12-23 01:18:25,383 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 101 [2020-12-23 01:18:31,705 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-23 01:18:49,756 WARN L197 SmtUtils]: Spent 13.66 s on a formula simplification. DAG size of input: 103 DAG size of output: 63 [2020-12-23 01:18:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:52,248 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-23 01:18:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 01:18:52,249 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20 [2020-12-23 01:18:52,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:52,250 INFO L225 Difference]: With dead ends: 54 [2020-12-23 01:18:52,250 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 01:18:52,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 65.5s TimeCoverageRelationStatistics Valid=162, Invalid=701, Unknown=7, NotChecked=0, Total=870 [2020-12-23 01:18:52,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 01:18:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-12-23 01:18:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 01:18:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-12-23 01:18:52,268 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 20 [2020-12-23 01:18:52,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:52,268 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-12-23 01:18:52,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 01:18:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-12-23 01:18:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 01:18:52,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:52,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:52,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 01:18:52,471 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:52,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1135749134, now seen corresponding path program 2 times [2020-12-23 01:18:52,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:52,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79521493] [2020-12-23 01:18:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:52,489 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:18:52,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116418298] [2020-12-23 01:18:52,490 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 01:18:52,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:18:52,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:18:52,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:18:52,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:18:52,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79521493] [2020-12-23 01:18:52,609 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:18:52,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116418298] [2020-12-23 01:18:52,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:18:52,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:18:52,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611982696] [2020-12-23 01:18:52,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:18:52,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:52,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:18:52,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:18:52,612 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2020-12-23 01:18:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:52,763 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-12-23 01:18:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 01:18:52,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-23 01:18:52,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:52,765 INFO L225 Difference]: With dead ends: 61 [2020-12-23 01:18:52,765 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 01:18:52,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 01:18:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 01:18:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2020-12-23 01:18:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 01:18:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-23 01:18:52,776 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 22 [2020-12-23 01:18:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:52,776 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-23 01:18:52,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:18:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-23 01:18:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 01:18:52,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:52,777 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:52,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:18:52,992 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:52,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 3 times [2020-12-23 01:18:52,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:52,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772471848] [2020-12-23 01:18:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:53,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:18:53,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218177759] [2020-12-23 01:18:53,011 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 01:18:53,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 01:18:53,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:18:53,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 01:18:53,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 01:18:53,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772471848] [2020-12-23 01:18:53,192 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:18:53,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218177759] [2020-12-23 01:18:53,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:18:53,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 01:18:53,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434884993] [2020-12-23 01:18:53,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 01:18:53,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:53,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 01:18:53,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-23 01:18:53,194 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 8 states. [2020-12-23 01:18:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:53,414 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-12-23 01:18:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:18:53,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-23 01:18:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:53,420 INFO L225 Difference]: With dead ends: 53 [2020-12-23 01:18:53,420 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 01:18:53,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:18:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 01:18:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-12-23 01:18:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 01:18:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-12-23 01:18:53,436 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2020-12-23 01:18:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:53,437 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-12-23 01:18:53,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 01:18:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-12-23 01:18:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 01:18:53,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:53,440 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:53,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:18:53,655 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:53,655 INFO L82 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 4 times [2020-12-23 01:18:53,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:53,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101744927] [2020-12-23 01:18:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:53,703 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:18:53,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721431446] [2020-12-23 01:18:53,704 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 01:18:53,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:18:53,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:18:53,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 01:18:53,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:53,796 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 01:18:53,799 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:53,809 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:53,815 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-23 01:18:53,816 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:53,826 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:53,827 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:53,828 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:22 [2020-12-23 01:18:53,906 INFO L348 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2020-12-23 01:18:53,907 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 3 case distinctions, treesize of input 41 treesize of output 72 [2020-12-23 01:18:53,910 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:53,948 INFO L625 ElimStorePlain]: treesize reduction 31, result has 58.7 percent of original size [2020-12-23 01:18:53,949 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:53,950 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:44 [2020-12-23 01:18:54,030 INFO L348 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2020-12-23 01:18:54,030 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 3 case distinctions, treesize of input 51 treesize of output 46 [2020-12-23 01:18:54,033 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:54,049 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:54,050 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:54,051 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:53 [2020-12-23 01:18:54,242 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-12-23 01:18:54,243 INFO L348 Elim1Store]: treesize reduction 86, result has 50.9 percent of original size [2020-12-23 01:18:54,243 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 9 case distinctions, treesize of input 84 treesize of output 155 [2020-12-23 01:18:54,249 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:54,316 INFO L625 ElimStorePlain]: treesize reduction 117, result has 42.6 percent of original size [2020-12-23 01:18:54,318 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:54,318 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:91, output treesize:87 [2020-12-23 01:18:54,450 INFO L348 Elim1Store]: treesize reduction 92, result has 15.6 percent of original size [2020-12-23 01:18:54,451 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 95 treesize of output 74 [2020-12-23 01:18:54,454 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:54,480 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:54,484 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 01:18:54,484 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:99, output treesize:76 [2020-12-23 01:18:54,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:54,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:54,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:18:54,974 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:18:54,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:18:54,982 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:18:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:55,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101744927] [2020-12-23 01:18:55,032 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:18:55,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721431446] [2020-12-23 01:18:55,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:18:55,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 01:18:55,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111135816] [2020-12-23 01:18:55,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 01:18:55,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:55,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 01:18:55,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-12-23 01:18:55,035 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 15 states. [2020-12-23 01:18:57,792 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-23 01:18:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:58,242 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-12-23 01:18:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 01:18:58,244 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2020-12-23 01:18:58,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:58,245 INFO L225 Difference]: With dead ends: 59 [2020-12-23 01:18:58,245 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 01:18:58,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-12-23 01:18:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 01:18:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-12-23 01:18:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 01:18:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-12-23 01:18:58,273 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 28 [2020-12-23 01:18:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:58,274 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-12-23 01:18:58,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 01:18:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-12-23 01:18:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 01:18:58,279 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:58,280 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:58,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 01:18:58,495 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:58,496 INFO L82 PathProgramCache]: Analyzing trace with hash 711279424, now seen corresponding path program 5 times [2020-12-23 01:18:58,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:58,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496356179] [2020-12-23 01:18:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:58,514 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:18:58,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469002281] [2020-12-23 01:18:58,514 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 01:18:58,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 01:18:58,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:18:58,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:18:58,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 01:18:58,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496356179] [2020-12-23 01:18:58,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:18:58,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469002281] [2020-12-23 01:18:58,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:18:58,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:18:58,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257310968] [2020-12-23 01:18:58,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:18:58,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:58,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:18:58,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:18:58,729 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 9 states. [2020-12-23 01:18:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:58,986 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2020-12-23 01:18:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 01:18:58,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-23 01:18:58,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:58,989 INFO L225 Difference]: With dead ends: 87 [2020-12-23 01:18:58,989 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 01:18:58,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-12-23 01:18:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 01:18:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 42. [2020-12-23 01:18:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 01:18:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-12-23 01:18:59,002 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 30 [2020-12-23 01:18:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:59,002 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-12-23 01:18:59,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:18:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-12-23 01:18:59,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 01:18:59,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:59,003 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:59,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 01:18:59,217 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:59,218 INFO L82 PathProgramCache]: Analyzing trace with hash 481747840, now seen corresponding path program 6 times [2020-12-23 01:18:59,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:59,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202603805] [2020-12-23 01:18:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:59,239 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:18:59,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033614030] [2020-12-23 01:18:59,240 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 01:18:59,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-23 01:18:59,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:18:59,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:18:59,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 01:18:59,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202603805] [2020-12-23 01:18:59,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:18:59,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033614030] [2020-12-23 01:18:59,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:18:59,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:18:59,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712191506] [2020-12-23 01:18:59,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:18:59,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:59,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:18:59,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:18:59,457 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 9 states. [2020-12-23 01:18:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:59,702 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-12-23 01:18:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 01:18:59,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-12-23 01:18:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:59,704 INFO L225 Difference]: With dead ends: 78 [2020-12-23 01:18:59,705 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 01:18:59,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:18:59,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 01:18:59,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 44. [2020-12-23 01:18:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 01:18:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-12-23 01:18:59,717 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 30 [2020-12-23 01:18:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:59,717 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-12-23 01:18:59,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:18:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-12-23 01:18:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:18:59,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:59,719 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:59,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 01:18:59,926 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:59,927 INFO L82 PathProgramCache]: Analyzing trace with hash -412561416, now seen corresponding path program 7 times [2020-12-23 01:18:59,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:59,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349634556] [2020-12-23 01:18:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:59,962 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:18:59,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051009966] [2020-12-23 01:18:59,963 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 01:19:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:19:00,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 01:19:00,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 01:19:00,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349634556] [2020-12-23 01:19:00,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:19:00,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051009966] [2020-12-23 01:19:00,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:19:00,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 01:19:00,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213065995] [2020-12-23 01:19:00,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:19:00,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:19:00,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:19:00,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:19:00,163 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 10 states. [2020-12-23 01:19:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:19:00,431 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-12-23 01:19:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 01:19:00,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-12-23 01:19:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:19:00,433 INFO L225 Difference]: With dead ends: 69 [2020-12-23 01:19:00,433 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 01:19:00,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-12-23 01:19:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 01:19:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-12-23 01:19:00,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 01:19:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-23 01:19:00,443 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 32 [2020-12-23 01:19:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:19:00,444 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-23 01:19:00,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:19:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-23 01:19:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:19:00,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:19:00,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:19:00,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:19:00,661 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:19:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:19:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 8 times [2020-12-23 01:19:00,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:19:00,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744427319] [2020-12-23 01:19:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:19:00,677 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:19:00,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561529742] [2020-12-23 01:19:00,678 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 01:19:00,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:19:00,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:19:00,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-23 01:19:00,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:00,795 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 01:19:00,797 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:00,812 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:00,819 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-23 01:19:00,822 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:00,848 INFO L625 ElimStorePlain]: treesize reduction 4, result has 85.7 percent of original size [2020-12-23 01:19:00,849 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:00,849 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:24 [2020-12-23 01:19:00,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:00,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:00,878 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:00,896 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-12-23 01:19:00,897 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 3 case distinctions, treesize of input 41 treesize of output 57 [2020-12-23 01:19:00,899 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:00,939 INFO L625 ElimStorePlain]: treesize reduction 44, result has 50.6 percent of original size [2020-12-23 01:19:00,940 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:00,940 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:45 [2020-12-23 01:19:00,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:00,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,004 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:01,013 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:01,014 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 71 [2020-12-23 01:19:01,017 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:01,064 INFO L625 ElimStorePlain]: treesize reduction 34, result has 67.0 percent of original size [2020-12-23 01:19:01,066 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:01,066 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:69 [2020-12-23 01:19:01,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,196 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:01,196 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 97 [2020-12-23 01:19:01,200 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:01,277 INFO L625 ElimStorePlain]: treesize reduction 42, result has 65.6 percent of original size [2020-12-23 01:19:01,278 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 01:19:01,279 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:84, output treesize:80 [2020-12-23 01:19:01,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,466 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:01,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,513 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:01,514 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:01,598 INFO L348 Elim1Store]: treesize reduction 24, result has 71.1 percent of original size [2020-12-23 01:19:01,598 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 106 treesize of output 163 [2020-12-23 01:19:01,604 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:01,742 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-12-23 01:19:01,743 INFO L625 ElimStorePlain]: treesize reduction 96, result has 54.5 percent of original size [2020-12-23 01:19:01,745 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 01:19:01,745 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:118, output treesize:115 [2020-12-23 01:19:01,935 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:01,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:01,982 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:01,983 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:01,984 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:02,158 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-23 01:19:02,160 INFO L348 Elim1Store]: treesize reduction 24, result has 84.2 percent of original size [2020-12-23 01:19:02,161 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 38 case distinctions, treesize of input 129 treesize of output 236 [2020-12-23 01:19:02,170 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:02,303 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-12-23 01:19:02,303 INFO L625 ElimStorePlain]: treesize reduction 167, result has 43.4 percent of original size [2020-12-23 01:19:02,305 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 01:19:02,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:141, output treesize:128 [2020-12-23 01:19:02,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,558 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:02,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,565 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:02,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:02,688 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-23 01:19:02,689 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:02,689 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 127 treesize of output 241 [2020-12-23 01:19:02,700 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:02,835 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-23 01:19:02,836 INFO L625 ElimStorePlain]: treesize reduction 26, result has 86.8 percent of original size [2020-12-23 01:19:02,841 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 01:19:02,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:133, output treesize:171 [2020-12-23 01:19:03,266 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-12-23 01:19:03,627 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:19:03,631 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:19:03,633 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:19:03,638 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:19:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:19:03,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744427319] [2020-12-23 01:19:03,708 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:19:03,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561529742] [2020-12-23 01:19:03,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:19:03,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-23 01:19:03,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694912205] [2020-12-23 01:19:03,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 01:19:03,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:19:03,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 01:19:03,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:19:03,710 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 19 states. [2020-12-23 01:19:04,409 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-12-23 01:19:07,109 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-12-23 01:19:07,454 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-12-23 01:19:07,761 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-12-23 01:19:08,030 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2020-12-23 01:19:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:19:08,267 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-12-23 01:19:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 01:19:08,269 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 32 [2020-12-23 01:19:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:19:08,269 INFO L225 Difference]: With dead ends: 61 [2020-12-23 01:19:08,270 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 01:19:08,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2020-12-23 01:19:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 01:19:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2020-12-23 01:19:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 01:19:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-12-23 01:19:08,284 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 32 [2020-12-23 01:19:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:19:08,284 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-12-23 01:19:08,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 01:19:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-12-23 01:19:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 01:19:08,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:19:08,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:19:08,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 01:19:08,492 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:19:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:19:08,493 INFO L82 PathProgramCache]: Analyzing trace with hash 420341116, now seen corresponding path program 9 times [2020-12-23 01:19:08,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:19:08,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859375671] [2020-12-23 01:19:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:19:08,512 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:19:08,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545474974] [2020-12-23 01:19:08,512 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 01:19:08,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-23 01:19:08,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:19:08,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:19:08,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 01:19:08,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859375671] [2020-12-23 01:19:08,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:19:08,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545474974] [2020-12-23 01:19:08,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:19:08,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 01:19:08,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138150570] [2020-12-23 01:19:08,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 01:19:08,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:19:08,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 01:19:08,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-23 01:19:08,822 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 11 states. [2020-12-23 01:19:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:19:09,155 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2020-12-23 01:19:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 01:19:09,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-12-23 01:19:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:19:09,157 INFO L225 Difference]: With dead ends: 98 [2020-12-23 01:19:09,157 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 01:19:09,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:19:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 01:19:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54. [2020-12-23 01:19:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 01:19:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-23 01:19:09,173 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 34 [2020-12-23 01:19:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:19:09,173 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-23 01:19:09,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 01:19:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-23 01:19:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 01:19:09,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:19:09,174 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:19:09,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 01:19:09,388 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:19:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:19:09,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1157467270, now seen corresponding path program 10 times [2020-12-23 01:19:09,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:19:09,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113674] [2020-12-23 01:19:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:19:09,407 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:19:09,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079107017] [2020-12-23 01:19:09,407 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 01:19:09,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:19:09,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:19:09,497 WARN L261 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 01:19:09,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:09,524 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 01:19:09,527 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:09,540 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:09,547 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-23 01:19:09,549 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:09,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:09,564 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:09,564 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:25 [2020-12-23 01:19:09,663 INFO L348 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2020-12-23 01:19:09,663 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 3 case distinctions, treesize of input 41 treesize of output 72 [2020-12-23 01:19:09,667 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:09,725 INFO L625 ElimStorePlain]: treesize reduction 31, result has 60.3 percent of original size [2020-12-23 01:19:09,726 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:09,726 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2020-12-23 01:19:09,925 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2020-12-23 01:19:09,927 INFO L348 Elim1Store]: treesize reduction 79, result has 52.4 percent of original size [2020-12-23 01:19:09,927 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 56 treesize of output 118 [2020-12-23 01:19:09,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:10,006 INFO L625 ElimStorePlain]: treesize reduction 58, result has 49.1 percent of original size [2020-12-23 01:19:10,007 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:10,007 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:66, output treesize:56 [2020-12-23 01:19:10,308 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-12-23 01:19:10,309 INFO L348 Elim1Store]: treesize reduction 116, result has 52.5 percent of original size [2020-12-23 01:19:10,309 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 67 treesize of output 162 [2020-12-23 01:19:10,318 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:10,409 INFO L625 ElimStorePlain]: treesize reduction 88, result has 42.5 percent of original size [2020-12-23 01:19:10,411 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:10,411 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:65 [2020-12-23 01:19:11,081 WARN L197 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2020-12-23 01:19:11,084 INFO L348 Elim1Store]: treesize reduction 168, result has 65.1 percent of original size [2020-12-23 01:19:11,084 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 21 case distinctions, treesize of input 81 treesize of output 350 [2020-12-23 01:19:11,089 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 2, 1] term [2020-12-23 01:19:11,090 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:19:11,091 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 2, 1] term [2020-12-23 01:19:11,092 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:19:11,092 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 2, 1] term [2020-12-23 01:19:11,093 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:19:11,093 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 2, 1] term [2020-12-23 01:19:11,094 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:19:11,094 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-23 01:19:11,095 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:19:11,095 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-23 01:19:11,095 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:19:11,096 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 01:19:11,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:11,106 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:11,401 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 48 [2020-12-23 01:19:11,402 INFO L625 ElimStorePlain]: treesize reduction 386, result has 19.2 percent of original size [2020-12-23 01:19:11,407 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 01:19:11,407 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:96, output treesize:92 [2020-12-23 01:19:11,638 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:12,146 WARN L197 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 118 [2020-12-23 01:19:12,147 INFO L348 Elim1Store]: treesize reduction 66, result has 84.1 percent of original size [2020-12-23 01:19:12,147 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 2 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 112 treesize of output 478 [2020-12-23 01:19:12,160 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:12,375 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 58 [2020-12-23 01:19:12,377 INFO L625 ElimStorePlain]: treesize reduction 562, result has 18.3 percent of original size [2020-12-23 01:19:12,380 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 01:19:12,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:130, output treesize:126 [2020-12-23 01:19:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:12,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:12,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,185 WARN L197 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 124 [2020-12-23 01:19:13,187 INFO L348 Elim1Store]: treesize reduction 64, result has 85.7 percent of original size [2020-12-23 01:19:13,188 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 4 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 537 [2020-12-23 01:19:13,205 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:13,438 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 63 [2020-12-23 01:19:13,440 INFO L625 ElimStorePlain]: treesize reduction 539, result has 20.1 percent of original size [2020-12-23 01:19:13,443 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 01:19:13,443 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:163, output treesize:136 [2020-12-23 01:19:13,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:13,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:14,302 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 127 [2020-12-23 01:19:14,303 INFO L348 Elim1Store]: treesize reduction 66, result has 84.6 percent of original size [2020-12-23 01:19:14,303 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 29 case distinctions, treesize of input 138 treesize of output 526 [2020-12-23 01:19:14,320 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:14,710 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 67 [2020-12-23 01:19:14,711 INFO L625 ElimStorePlain]: treesize reduction 560, result has 20.5 percent of original size [2020-12-23 01:19:14,715 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 01:19:14,716 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:156, output treesize:144 [2020-12-23 01:19:14,952 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-23 01:19:15,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:15,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:16,275 WARN L197 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 171 [2020-12-23 01:19:16,276 INFO L348 Elim1Store]: treesize reduction 66, result has 88.6 percent of original size [2020-12-23 01:19:16,277 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 20 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 38 case distinctions, treesize of input 161 treesize of output 712 [2020-12-23 01:19:16,307 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:16,786 WARN L197 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2020-12-23 01:19:16,786 INFO L625 ElimStorePlain]: treesize reduction 851, result has 17.5 percent of original size [2020-12-23 01:19:16,797 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-12-23 01:19:16,798 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:184, output treesize:180 [2020-12-23 01:19:20,272 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-23 01:19:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:19:21,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113674] [2020-12-23 01:19:21,473 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:19:21,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079107017] [2020-12-23 01:19:21,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:19:21,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-12-23 01:19:21,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557843429] [2020-12-23 01:19:21,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 01:19:21,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:19:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 01:19:21,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=432, Unknown=1, NotChecked=0, Total=506 [2020-12-23 01:19:21,476 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 23 states. [2020-12-23 01:19:22,167 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-23 01:19:23,962 WARN L197 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-12-23 01:19:26,505 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-12-23 01:19:27,690 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-12-23 01:19:28,232 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-12-23 01:19:30,759 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-12-23 01:19:35,404 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2020-12-23 01:19:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:19:38,823 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2020-12-23 01:19:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 01:19:38,825 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 36 [2020-12-23 01:19:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:19:38,825 INFO L225 Difference]: With dead ends: 96 [2020-12-23 01:19:38,825 INFO L226 Difference]: Without dead ends: 94 [2020-12-23 01:19:38,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=139, Invalid=851, Unknown=2, NotChecked=0, Total=992 [2020-12-23 01:19:38,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-23 01:19:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2020-12-23 01:19:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 01:19:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-23 01:19:38,845 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 36 [2020-12-23 01:19:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:19:38,845 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-23 01:19:38,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 01:19:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-23 01:19:38,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 01:19:38,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:19:38,847 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:19:39,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 01:19:39,061 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:19:39,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:19:39,062 INFO L82 PathProgramCache]: Analyzing trace with hash -686245078, now seen corresponding path program 11 times [2020-12-23 01:19:39,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:19:39,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857277781] [2020-12-23 01:19:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:19:39,078 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:19:39,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057545642] [2020-12-23 01:19:39,079 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:19:39,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 01:19:39,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:19:39,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 01:19:39,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 01:19:39,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857277781] [2020-12-23 01:19:39,455 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:19:39,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057545642] [2020-12-23 01:19:39,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:19:39,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 01:19:39,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691420747] [2020-12-23 01:19:39,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 01:19:39,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:19:39,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 01:19:39,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:19:39,458 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 12 states. [2020-12-23 01:19:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:19:39,867 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-12-23 01:19:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 01:19:39,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-12-23 01:19:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:19:39,870 INFO L225 Difference]: With dead ends: 84 [2020-12-23 01:19:39,870 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 01:19:39,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-12-23 01:19:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 01:19:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2020-12-23 01:19:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 01:19:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-12-23 01:19:39,882 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 40 [2020-12-23 01:19:39,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:19:39,882 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-12-23 01:19:39,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 01:19:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-12-23 01:19:39,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 01:19:39,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:19:39,883 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:19:40,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:19:40,097 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:19:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:19:40,098 INFO L82 PathProgramCache]: Analyzing trace with hash -835467152, now seen corresponding path program 12 times [2020-12-23 01:19:40,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:19:40,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322307873] [2020-12-23 01:19:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:19:40,123 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:19:40,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972745978] [2020-12-23 01:19:40,123 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:19:40,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 01:19:40,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:19:40,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-23 01:19:40,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:40,293 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 01:19:40,295 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:40,315 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:40,323 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-23 01:19:40,324 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:40,355 INFO L625 ElimStorePlain]: treesize reduction 4, result has 85.7 percent of original size [2020-12-23 01:19:40,357 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:40,357 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:24 [2020-12-23 01:19:40,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:40,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:40,397 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:40,421 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-12-23 01:19:40,422 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 3 case distinctions, treesize of input 41 treesize of output 57 [2020-12-23 01:19:40,425 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:40,469 INFO L625 ElimStorePlain]: treesize reduction 11, result has 78.4 percent of original size [2020-12-23 01:19:40,470 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:40,470 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:40 [2020-12-23 01:19:40,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:40,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:40,720 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-12-23 01:19:40,721 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:40,722 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 203 [2020-12-23 01:19:40,726 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:40,835 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-12-23 01:19:40,836 INFO L625 ElimStorePlain]: treesize reduction 96, result has 40.4 percent of original size [2020-12-23 01:19:40,838 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:40,838 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:65 [2020-12-23 01:19:40,962 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:19:40,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:40,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:40,976 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:40,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:40,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,010 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 56 [2020-12-23 01:19:41,014 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:41,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,145 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:41,146 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 189 [2020-12-23 01:19:41,151 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:41,425 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-12-23 01:19:41,426 INFO L625 ElimStorePlain]: treesize reduction 118, result has 57.1 percent of original size [2020-12-23 01:19:41,428 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 01:19:41,429 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:171, output treesize:157 [2020-12-23 01:19:41,582 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-12-23 01:19:41,727 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-12-23 01:19:41,732 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:41,733 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:19:41,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:41,985 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-12-23 01:19:41,986 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:41,987 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 96 treesize of output 234 [2020-12-23 01:19:41,993 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:42,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,042 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 70 [2020-12-23 01:19:42,046 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:42,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,063 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:42,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:42,078 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 73 [2020-12-23 01:19:42,082 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:42,515 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-12-23 01:19:42,516 INFO L625 ElimStorePlain]: treesize reduction 127, result has 69.7 percent of original size [2020-12-23 01:19:42,518 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-12-23 01:19:42,518 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:312, output treesize:292 [2020-12-23 01:19:42,739 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-12-23 01:19:42,744 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:19:42,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:19:43,254 WARN L197 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-12-23 01:19:43,264 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:19:43,632 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-12-23 01:19:44,012 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-23 01:19:44,019 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:19:44,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,054 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,070 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,109 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,138 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,147 INFO L244 Elim1Store]: Index analysis took 106 ms [2020-12-23 01:19:44,150 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 83 [2020-12-23 01:19:44,154 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:44,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,191 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,202 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,257 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,277 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,313 INFO L244 Elim1Store]: Index analysis took 141 ms [2020-12-23 01:19:44,315 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 95 [2020-12-23 01:19:44,318 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:44,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,344 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,355 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,387 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,417 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,428 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 83 [2020-12-23 01:19:44,431 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:44,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,475 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,486 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:44,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:44,519 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:45,126 WARN L197 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-12-23 01:19:45,127 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:45,127 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 31 case distinctions, treesize of input 125 treesize of output 556 [2020-12-23 01:19:45,140 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[16, 3, 2, 1] term [2020-12-23 01:19:45,141 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 16 disjuncts [2020-12-23 01:19:45,143 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[15, 3, 2, 1] term [2020-12-23 01:19:45,143 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2020-12-23 01:19:45,145 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[14, 3, 2, 1] term [2020-12-23 01:19:45,145 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 01:19:45,146 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[13, 3, 2, 1] term [2020-12-23 01:19:45,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:19:45,147 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[12, 3, 2, 1] term [2020-12-23 01:19:45,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:19:45,148 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 2, 1] term [2020-12-23 01:19:45,148 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:19:45,149 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-12-23 01:19:45,149 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:19:45,150 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-12-23 01:19:45,150 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:19:45,151 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-23 01:19:45,151 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:19:45,152 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-23 01:19:45,152 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:19:45,153 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-23 01:19:45,153 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:19:45,153 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 1] term [2020-12-23 01:19:45,154 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:19:45,154 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 1] term [2020-12-23 01:19:45,154 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 01:19:45,155 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 1] term [2020-12-23 01:19:45,155 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:19:45,156 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-12-23 01:19:45,156 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:19:45,173 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:46,400 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 139 DAG size of output: 98 [2020-12-23 01:19:46,402 INFO L625 ElimStorePlain]: treesize reduction 265, result has 65.2 percent of original size [2020-12-23 01:19:46,406 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 4 xjuncts. [2020-12-23 01:19:46,406 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:468, output treesize:496 [2020-12-23 01:19:46,909 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-23 01:19:47,366 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-23 01:19:47,376 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:19:47,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,431 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:47,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,568 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:47,668 INFO L244 Elim1Store]: Index analysis took 271 ms [2020-12-23 01:19:47,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:47,697 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:47,712 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,253 WARN L197 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-12-23 01:19:48,254 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:48,255 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 149 treesize of output 612 [2020-12-23 01:19:48,275 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:48,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,324 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,420 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,467 INFO L244 Elim1Store]: Index analysis took 175 ms [2020-12-23 01:19:48,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,491 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,497 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,515 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:48,516 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 119 [2020-12-23 01:19:48,520 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:48,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,576 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,691 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,768 INFO L244 Elim1Store]: Index analysis took 230 ms [2020-12-23 01:19:48,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,803 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,809 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,833 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:48,834 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 12 case distinctions, treesize of input 140 treesize of output 131 [2020-12-23 01:19:48,838 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:48,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,874 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,885 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,887 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:48,891 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:48,937 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:48,937 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 172 treesize of output 144 [2020-12-23 01:19:48,941 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:49,875 WARN L197 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2020-12-23 01:19:49,877 INFO L625 ElimStorePlain]: treesize reduction 211, result has 74.1 percent of original size [2020-12-23 01:19:49,881 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 4 xjuncts. [2020-12-23 01:19:49,881 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:646, output treesize:604 [2020-12-23 01:19:50,472 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-23 01:19:51,162 WARN L197 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-23 01:19:51,171 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:19:51,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,203 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,262 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:51,380 INFO L244 Elim1Store]: Index analysis took 183 ms [2020-12-23 01:19:51,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,399 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:51,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,403 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:51,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,407 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:51,434 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:51,435 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 166 treesize of output 147 [2020-12-23 01:19:51,438 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:51,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,729 INFO L244 Elim1Store]: Index analysis took 275 ms [2020-12-23 01:19:51,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,764 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:51,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,768 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:51,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,771 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:51,802 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:51,803 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 186 treesize of output 170 [2020-12-23 01:19:51,807 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:51,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:51,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,253 INFO L244 Elim1Store]: Index analysis took 425 ms [2020-12-23 01:19:52,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,300 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:52,309 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:52,326 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:52,879 WARN L197 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-12-23 01:19:52,880 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:52,881 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 16 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 34 case distinctions, treesize of input 175 treesize of output 718 [2020-12-23 01:19:52,901 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:52,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:52,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,026 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:53,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,030 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:53,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:53,034 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:53,067 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:53,068 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 169 treesize of output 159 [2020-12-23 01:19:53,073 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:54,456 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 169 DAG size of output: 120 [2020-12-23 01:19:54,458 INFO L625 ElimStorePlain]: treesize reduction 414, result has 63.7 percent of original size [2020-12-23 01:19:54,462 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 4 xjuncts. [2020-12-23 01:19:54,462 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:750, output treesize:728 [2020-12-23 01:19:55,282 WARN L197 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-12-23 01:19:56,241 WARN L197 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-12-23 01:19:56,254 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 12, 1] term [2020-12-23 01:19:56,255 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:19:56,265 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 4, 4, 1] term [2020-12-23 01:19:56,265 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:19:56,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,303 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,322 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:56,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,336 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:56,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,340 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:56,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,346 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:56,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:19:56,351 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:56,352 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:19:56,537 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-23 01:19:56,538 INFO L348 Elim1Store]: treesize reduction 24, result has 74.7 percent of original size [2020-12-23 01:19:56,539 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 67 case distinctions, treesize of input 153 treesize of output 214 [2020-12-23 01:19:56,546 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:56,738 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-12-23 01:19:56,740 INFO L625 ElimStorePlain]: treesize reduction 130, result has 55.9 percent of original size [2020-12-23 01:19:56,744 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 01:19:56,745 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:162, output treesize:165 [2020-12-23 01:19:57,566 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-12-23 01:19:58,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:19:58,287 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:19:58,289 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:19:58,292 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:19:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:19:58,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322307873] [2020-12-23 01:19:58,452 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:19:58,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972745978] [2020-12-23 01:19:58,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:19:58,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-12-23 01:19:58,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88924933] [2020-12-23 01:19:58,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-23 01:19:58,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:19:58,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-23 01:19:58,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-12-23 01:19:58,455 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 26 states. [2020-12-23 01:19:59,235 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-23 01:19:59,555 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 01:20:00,185 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-23 01:20:01,394 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-12-23 01:20:07,931 WARN L197 SmtUtils]: Spent 5.98 s on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-12-23 01:20:12,449 WARN L197 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 134 DAG size of output: 116 [2020-12-23 01:20:14,352 WARN L197 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 143 DAG size of output: 111 [2020-12-23 01:20:15,533 WARN L197 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 79 [2020-12-23 01:20:16,576 WARN L197 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 76 [2020-12-23 01:20:17,615 WARN L197 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 111 [2020-12-23 01:20:19,926 WARN L197 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 132 DAG size of output: 132 [2020-12-23 01:20:21,293 WARN L197 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 122 [2020-12-23 01:20:23,643 WARN L197 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2020-12-23 01:20:25,043 WARN L197 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2020-12-23 01:20:26,987 WARN L197 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2020-12-23 01:20:28,235 WARN L197 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2020-12-23 01:20:29,663 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 135 DAG size of output: 122 [2020-12-23 01:20:31,115 WARN L197 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2020-12-23 01:20:32,265 WARN L197 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 107 [2020-12-23 01:20:33,548 WARN L197 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 109 [2020-12-23 01:20:34,793 WARN L197 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 113 [2020-12-23 01:20:37,606 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 134 DAG size of output: 134 [2020-12-23 01:20:38,877 WARN L197 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 120 [2020-12-23 01:20:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:20:38,890 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-12-23 01:20:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 01:20:38,893 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 40 [2020-12-23 01:20:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:20:38,894 INFO L225 Difference]: With dead ends: 83 [2020-12-23 01:20:38,894 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 01:20:38,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=282, Invalid=2168, Unknown=0, NotChecked=0, Total=2450 [2020-12-23 01:20:38,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 01:20:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2020-12-23 01:20:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 01:20:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-12-23 01:20:38,917 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 40 [2020-12-23 01:20:38,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:20:38,918 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-12-23 01:20:38,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-23 01:20:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-12-23 01:20:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 01:20:38,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:20:38,918 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:20:39,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:20:39,120 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:20:39,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:20:39,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1939079250, now seen corresponding path program 13 times [2020-12-23 01:20:39,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:20:39,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119829367] [2020-12-23 01:20:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:20:39,138 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:20:39,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650442674] [2020-12-23 01:20:39,139 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:20:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:20:39,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 01:20:39,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:20:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-23 01:20:39,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119829367] [2020-12-23 01:20:39,539 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:20:39,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650442674] [2020-12-23 01:20:39,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:20:39,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 01:20:39,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178243417] [2020-12-23 01:20:39,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 01:20:39,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:20:39,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 01:20:39,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:20:39,541 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 13 states. [2020-12-23 01:20:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:20:40,222 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2020-12-23 01:20:40,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-23 01:20:40,224 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-12-23 01:20:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:20:40,225 INFO L225 Difference]: With dead ends: 129 [2020-12-23 01:20:40,226 INFO L226 Difference]: Without dead ends: 110 [2020-12-23 01:20:40,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-12-23 01:20:40,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-23 01:20:40,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 62. [2020-12-23 01:20:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 01:20:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-12-23 01:20:40,248 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 42 [2020-12-23 01:20:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:20:40,249 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-12-23 01:20:40,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 01:20:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-12-23 01:20:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 01:20:40,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:20:40,250 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:20:40,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 01:20:40,465 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:20:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:20:40,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1949917166, now seen corresponding path program 14 times [2020-12-23 01:20:40,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:20:40,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037930328] [2020-12-23 01:20:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:20:40,491 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:20:40,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747235059] [2020-12-23 01:20:40,492 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:20:40,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:20:40,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:20:40,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 01:20:40,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:20:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-23 01:20:40,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037930328] [2020-12-23 01:20:40,949 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:20:40,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747235059] [2020-12-23 01:20:40,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:20:40,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 01:20:40,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927714046] [2020-12-23 01:20:40,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 01:20:40,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:20:40,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 01:20:40,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:20:40,951 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 13 states. [2020-12-23 01:20:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:20:41,609 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-12-23 01:20:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 01:20:41,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-12-23 01:20:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:20:41,613 INFO L225 Difference]: With dead ends: 112 [2020-12-23 01:20:41,613 INFO L226 Difference]: Without dead ends: 95 [2020-12-23 01:20:41,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:20:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-23 01:20:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 64. [2020-12-23 01:20:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 01:20:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-12-23 01:20:41,633 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 42 [2020-12-23 01:20:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:20:41,633 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-12-23 01:20:41,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 01:20:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-12-23 01:20:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 01:20:41,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:20:41,634 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:20:41,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 01:20:41,838 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:20:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:20:41,838 INFO L82 PathProgramCache]: Analyzing trace with hash -949375060, now seen corresponding path program 15 times [2020-12-23 01:20:41,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:20:41,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373475621] [2020-12-23 01:20:41,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:20:41,852 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:20:41,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631404911] [2020-12-23 01:20:41,853 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:20:42,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-23 01:20:42,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:20:42,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 80 conjunts are in the unsatisfiable core [2020-12-23 01:20:42,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:20:42,212 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:42,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-12-23 01:20:42,218 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:42,252 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:42,263 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-23 01:20:42,265 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:42,325 INFO L625 ElimStorePlain]: treesize reduction 4, result has 87.1 percent of original size [2020-12-23 01:20:42,327 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:42,327 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:53, output treesize:27 [2020-12-23 01:20:42,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:42,382 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:42,426 INFO L348 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-12-23 01:20:42,427 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 3 case distinctions, treesize of input 41 treesize of output 57 [2020-12-23 01:20:42,431 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:42,521 INFO L625 ElimStorePlain]: treesize reduction 26, result has 64.9 percent of original size [2020-12-23 01:20:42,522 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:42,523 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:48 [2020-12-23 01:20:42,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:42,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:42,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:42,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:42,688 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:42,709 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:42,710 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 71 [2020-12-23 01:20:42,713 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:42,818 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-23 01:20:42,825 INFO L625 ElimStorePlain]: treesize reduction 31, result has 69.3 percent of original size [2020-12-23 01:20:42,827 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:42,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:70 [2020-12-23 01:20:43,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,024 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:43,025 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 68 [2020-12-23 01:20:43,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:43,131 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-23 01:20:43,133 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.9 percent of original size [2020-12-23 01:20:43,135 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:43,135 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:75 [2020-12-23 01:20:43,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:43,994 WARN L197 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-12-23 01:20:43,995 INFO L348 Elim1Store]: treesize reduction 116, result has 65.3 percent of original size [2020-12-23 01:20:43,995 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 92 treesize of output 252 [2020-12-23 01:20:44,004 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:44,264 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-12-23 01:20:44,266 INFO L625 ElimStorePlain]: treesize reduction 124, result has 40.1 percent of original size [2020-12-23 01:20:44,268 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:44,268 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:83 [2020-12-23 01:20:44,421 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:20:44,875 WARN L197 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2020-12-23 01:20:44,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:20:44,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:44,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:44,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:44,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:45,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:45,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:45,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:45,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:45,225 INFO L244 Elim1Store]: Index analysis took 323 ms [2020-12-23 01:20:46,263 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 155 [2020-12-23 01:20:46,265 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:46,266 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 608 [2020-12-23 01:20:46,276 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[14, 3, 1] term [2020-12-23 01:20:46,276 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 01:20:46,277 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[13, 3, 1] term [2020-12-23 01:20:46,278 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:20:46,279 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[12, 3, 1] term [2020-12-23 01:20:46,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:20:46,279 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 1] term [2020-12-23 01:20:46,280 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:20:46,280 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 1] term [2020-12-23 01:20:46,280 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:20:46,281 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 1] term [2020-12-23 01:20:46,281 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:20:46,282 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 1] term [2020-12-23 01:20:46,282 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:20:46,283 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 1] term [2020-12-23 01:20:46,283 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:20:46,284 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 1] term [2020-12-23 01:20:46,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:20:46,284 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 1] term [2020-12-23 01:20:46,285 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:20:46,285 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 1] term [2020-12-23 01:20:46,285 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:20:46,286 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 1] term [2020-12-23 01:20:46,286 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:20:46,286 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-12-23 01:20:46,287 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:20:46,309 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:46,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:46,460 INFO L244 Elim1Store]: Index analysis took 124 ms [2020-12-23 01:20:46,629 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-12-23 01:20:46,630 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:46,630 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 211 [2020-12-23 01:20:46,635 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 1] term [2020-12-23 01:20:46,636 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:20:46,637 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-12-23 01:20:46,637 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:20:46,637 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-23 01:20:46,637 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:20:46,642 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:48,541 WARN L197 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 177 DAG size of output: 73 [2020-12-23 01:20:48,545 INFO L625 ElimStorePlain]: treesize reduction 954, result has 19.6 percent of original size [2020-12-23 01:20:48,550 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:20:48,557 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 01:20:48,557 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:203, output treesize:232 [2020-12-23 01:20:48,560 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:20:49,186 WARN L197 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-12-23 01:20:49,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:20:49,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:20:49,198 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:20:49,199 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:20:50,543 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-12-23 01:20:50,554 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:20:51,591 WARN L197 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-12-23 01:20:52,265 WARN L197 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-23 01:20:52,277 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 01:20:52,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,312 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,322 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,390 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,406 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,450 INFO L244 Elim1Store]: Index analysis took 150 ms [2020-12-23 01:20:52,459 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 93 [2020-12-23 01:20:52,463 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,522 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,542 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,553 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,560 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,650 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,712 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,741 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,750 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,779 INFO L244 Elim1Store]: Index analysis took 297 ms [2020-12-23 01:20:52,784 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 12 disjoint index pairs (out of 45 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 98 [2020-12-23 01:20:52,789 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:52,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,869 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,882 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:52,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:52,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:53,044 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:53,097 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:53,235 INFO L244 Elim1Store]: Index analysis took 421 ms [2020-12-23 01:20:53,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:53,243 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:53,612 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-12-23 01:20:53,613 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:53,614 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 8 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 99 treesize of output 358 [2020-12-23 01:20:53,621 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-12-23 01:20:53,622 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:20:53,622 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-12-23 01:20:53,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:20:53,623 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-23 01:20:53,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:20:53,624 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-23 01:20:53,624 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:20:53,625 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-23 01:20:53,625 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:20:53,626 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-23 01:20:53,626 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:20:53,627 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 1] term [2020-12-23 01:20:53,627 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:20:53,628 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 1] term [2020-12-23 01:20:53,628 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:20:53,628 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-12-23 01:20:53,629 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:20:53,637 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:53,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:20:53,654 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:54,157 WARN L197 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2020-12-23 01:20:54,158 INFO L625 ElimStorePlain]: treesize reduction 285, result has 43.2 percent of original size [2020-12-23 01:20:54,161 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:20:54,161 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:481, output treesize:217 [2020-12-23 01:20:54,520 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-23 01:20:54,879 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-12-23 01:20:54,887 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:20:54,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,934 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:54,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:54,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,051 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:55,147 INFO L244 Elim1Store]: Index analysis took 242 ms [2020-12-23 01:20:55,149 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:55,151 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,162 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:55,559 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-23 01:20:55,560 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:55,560 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 121 treesize of output 433 [2020-12-23 01:20:55,567 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[12, 3, 2, 1] term [2020-12-23 01:20:55,567 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:20:55,568 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 2, 1] term [2020-12-23 01:20:55,568 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:20:55,569 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-12-23 01:20:55,569 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:20:55,570 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-12-23 01:20:55,570 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:20:55,570 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-23 01:20:55,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:20:55,571 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-23 01:20:55,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:20:55,572 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-12-23 01:20:55,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:20:55,572 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-23 01:20:55,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:20:55,573 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 1] term [2020-12-23 01:20:55,573 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:20:55,573 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 1] term [2020-12-23 01:20:55,574 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:20:55,574 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-12-23 01:20:55,574 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:20:55,587 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:55,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,643 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:55,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,659 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:55,661 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:55,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:55,668 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:55,723 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:55,724 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 129 treesize of output 149 [2020-12-23 01:20:55,732 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:56,389 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 79 [2020-12-23 01:20:56,391 INFO L625 ElimStorePlain]: treesize reduction 609, result has 31.7 percent of original size [2020-12-23 01:20:56,395 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 01:20:56,395 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:293, output treesize:283 [2020-12-23 01:20:56,811 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-12-23 01:20:57,554 WARN L197 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-12-23 01:20:57,562 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:20:57,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,584 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,640 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,758 INFO L244 Elim1Store]: Index analysis took 180 ms [2020-12-23 01:20:57,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,765 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,769 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,775 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,779 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,837 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:57,838 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 16 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 157 treesize of output 179 [2020-12-23 01:20:57,843 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:57,859 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,922 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,926 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:57,936 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:57,943 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:20:58,390 WARN L197 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-23 01:20:58,391 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:58,391 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 147 treesize of output 510 [2020-12-23 01:20:58,398 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[14, 3, 2, 1] term [2020-12-23 01:20:58,398 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 01:20:58,399 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[13, 3, 2, 1] term [2020-12-23 01:20:58,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:20:58,400 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[12, 3, 2, 1] term [2020-12-23 01:20:58,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:20:58,400 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 2, 1] term [2020-12-23 01:20:58,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:20:58,401 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-12-23 01:20:58,401 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:20:58,401 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-12-23 01:20:58,401 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:20:58,402 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 1] term [2020-12-23 01:20:58,402 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:20:58,403 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 1] term [2020-12-23 01:20:58,403 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:20:58,403 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 1] term [2020-12-23 01:20:58,403 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:20:58,404 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 1] term [2020-12-23 01:20:58,404 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-23 01:20:58,404 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 1] term [2020-12-23 01:20:58,404 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 01:20:58,405 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 1] term [2020-12-23 01:20:58,405 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:20:58,405 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-12-23 01:20:58,405 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:20:58,422 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:59,530 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 141 DAG size of output: 82 [2020-12-23 01:20:59,531 INFO L625 ElimStorePlain]: treesize reduction 569, result has 37.7 percent of original size [2020-12-23 01:20:59,534 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 01:20:59,535 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:347, output treesize:345 [2020-12-23 01:20:59,999 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-23 01:21:00,453 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-12-23 01:21:00,461 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:00,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,517 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:00,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,735 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:00,824 INFO L244 Elim1Store]: Index analysis took 344 ms [2020-12-23 01:21:00,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,860 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:00,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:00,881 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:00,883 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:00,891 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:01,346 WARN L197 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-12-23 01:21:01,347 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:01,348 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 16 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 39 case distinctions, treesize of input 182 treesize of output 567 [2020-12-23 01:21:01,356 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[16, 3, 2, 1] term [2020-12-23 01:21:01,356 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 16 disjuncts [2020-12-23 01:21:01,357 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[15, 3, 2, 1] term [2020-12-23 01:21:01,358 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2020-12-23 01:21:01,359 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[14, 3, 2, 1] term [2020-12-23 01:21:01,359 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 01:21:01,360 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[13, 3, 1] term [2020-12-23 01:21:01,360 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:21:01,361 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[12, 3, 1] term [2020-12-23 01:21:01,362 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:21:01,362 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 1] term [2020-12-23 01:21:01,362 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:21:01,363 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 1] term [2020-12-23 01:21:01,363 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:21:01,364 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 1] term [2020-12-23 01:21:01,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:21:01,365 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 1] term [2020-12-23 01:21:01,365 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:21:01,366 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 1] term [2020-12-23 01:21:01,366 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-23 01:21:01,367 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 1] term [2020-12-23 01:21:01,367 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-12-23 01:21:01,367 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 1] term [2020-12-23 01:21:01,368 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-23 01:21:01,369 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 1] term [2020-12-23 01:21:01,369 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 01:21:01,369 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 1] term [2020-12-23 01:21:01,369 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-23 01:21:01,370 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 1] term [2020-12-23 01:21:01,370 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:21:01,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:01,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,455 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:01,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,498 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:01,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,505 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:01,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,510 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:01,514 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:01,564 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:01,565 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 20 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 192 treesize of output 187 [2020-12-23 01:21:01,570 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:02,701 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 128 DAG size of output: 94 [2020-12-23 01:21:02,703 INFO L625 ElimStorePlain]: treesize reduction 262, result has 62.0 percent of original size [2020-12-23 01:21:02,707 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 01:21:02,707 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:417, output treesize:427 [2020-12-23 01:21:03,267 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-23 01:21:03,830 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-23 01:21:03,839 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 14, 1] term [2020-12-23 01:21:03,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:03,853 INFO L443 ElimStorePlain]: Different costs {132=[|v_#memory_int_62|], 156=[v_prenex_15]} [2020-12-23 01:21:03,864 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-23 01:21:03,866 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:04,123 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-12-23 01:21:04,124 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:04,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,165 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:04,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,225 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:04,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,247 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:04,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,263 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:04,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:21:04,272 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:21:04,492 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-12-23 01:21:04,493 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:21:04,494 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 25 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 68 case distinctions, treesize of input 227 treesize of output 354 [2020-12-23 01:21:04,503 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 2, 1] term [2020-12-23 01:21:04,503 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:21:04,504 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 3, 2, 1] term [2020-12-23 01:21:04,504 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:21:04,505 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 2, 1] term [2020-12-23 01:21:04,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:21:04,515 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:21:04,854 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2020-12-23 01:21:04,855 INFO L625 ElimStorePlain]: treesize reduction 269, result has 43.6 percent of original size [2020-12-23 01:21:04,858 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:21:04,859 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:469, output treesize:208 [2020-12-23 01:21:07,329 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-12-23 01:21:07,762 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:21:07,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:21:07,766 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:21:07,771 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2020-12-23 01:21:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:21:07,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373475621] [2020-12-23 01:21:07,991 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:21:07,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631404911] [2020-12-23 01:21:07,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:21:07,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-12-23 01:21:07,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428485135] [2020-12-23 01:21:07,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 01:21:07,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:21:07,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 01:21:07,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 01:21:07,996 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 33 states. [2020-12-23 01:21:09,357 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-23 01:21:09,697 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2020-12-23 01:21:10,410 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2020-12-23 01:21:11,003 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-23 01:21:12,317 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2020-12-23 01:21:13,788 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2020-12-23 01:21:14,478 WARN L197 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 01:21:16,448 WARN L197 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2020-12-23 01:21:17,419 WARN L197 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-12-23 01:21:17,992 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2020-12-23 01:21:19,788 WARN L197 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-12-23 01:21:20,417 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 63 [2020-12-23 01:21:21,540 WARN L197 SmtUtils]: Spent 940.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-12-23 01:21:22,200 WARN L197 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-12-23 01:21:22,970 WARN L197 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-12-23 01:21:23,764 WARN L197 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 71