/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-patterns/array26_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 10:56:23,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 10:56:23,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 10:56:23,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 10:56:23,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 10:56:23,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 10:56:23,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 10:56:23,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 10:56:23,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 10:56:23,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 10:56:23,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 10:56:23,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 10:56:23,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 10:56:23,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 10:56:23,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 10:56:23,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 10:56:23,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 10:56:23,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 10:56:23,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 10:56:23,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 10:56:23,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 10:56:23,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 10:56:23,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 10:56:23,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 10:56:23,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 10:56:23,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 10:56:23,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 10:56:23,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 10:56:23,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 10:56:23,494 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 10:56:23,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 10:56:23,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 10:56:23,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 10:56:23,499 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 10:56:23,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 10:56:23,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 10:56:23,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 10:56:23,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 10:56:23,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 10:56:23,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 10:56:23,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 10:56:23,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 10:56:23,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 10:56:23,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 10:56:23,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 10:56:23,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 10:56:23,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:56:23,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 10:56:23,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 10:56:23,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 10:56:23,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 10:56:23,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 10:56:23,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 10:56:23,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 10:56:23,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 10:56:23,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 10:56:23,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 10:56:23,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 10:56:23,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 10:56:23,978 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 10:56:23,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array26_pattern.c [2021-01-06 10:56:24,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b29703c9b/e06edce070fe4332a9806bb219f05a0b/FLAG0eaca1a4c [2021-01-06 10:56:24,691 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 10:56:24,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-patterns/array26_pattern.c [2021-01-06 10:56:24,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b29703c9b/e06edce070fe4332a9806bb219f05a0b/FLAG0eaca1a4c [2021-01-06 10:56:25,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b29703c9b/e06edce070fe4332a9806bb219f05a0b [2021-01-06 10:56:25,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 10:56:25,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 10:56:25,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 10:56:25,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 10:56:25,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 10:56:25,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c429722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25, skipping insertion in model container [2021-01-06 10:56:25,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 10:56:25,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 10:56:25,240 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-patterns/array26_pattern.c[1324,1337] left hand side expression in assignment: lhs: VariableLHS[~ARR_SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~row~0,]]],[IdentifierExpression[~column~0,]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~row~0,]]],[IdentifierExpression[~column~0,]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~row~0,]]],[IdentifierExpression[~column~0,]]] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2021-01-06 10:56:25,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:56:25,281 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 10:56:25,297 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-patterns/array26_pattern.c[1324,1337] left hand side expression in assignment: lhs: VariableLHS[~ARR_SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~row~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~column~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~row~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~column~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~row~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~column~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2021-01-06 10:56:25,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:56:25,328 INFO L208 MainTranslator]: Completed translation [2021-01-06 10:56:25,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25 WrapperNode [2021-01-06 10:56:25,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 10:56:25,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 10:56:25,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 10:56:25,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 10:56:25,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 10:56:25,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 10:56:25,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 10:56:25,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 10:56:25,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (1/1) ... [2021-01-06 10:56:25,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 10:56:25,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 10:56:25,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 10:56:25,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 10:56:25,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (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 [2021-01-06 10:56:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 10:56:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 10:56:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 10:56:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 10:56:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 10:56:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 10:56:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 10:56:26,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 10:56:26,065 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-01-06 10:56:26,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:56:26 BoogieIcfgContainer [2021-01-06 10:56:26,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 10:56:26,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 10:56:26,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 10:56:26,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 10:56:26,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 10:56:25" (1/3) ... [2021-01-06 10:56:26,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f26d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:56:26, skipping insertion in model container [2021-01-06 10:56:26,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:56:25" (2/3) ... [2021-01-06 10:56:26,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f26d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:56:26, skipping insertion in model container [2021-01-06 10:56:26,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:56:26" (3/3) ... [2021-01-06 10:56:26,084 INFO L111 eAbstractionObserver]: Analyzing ICFG array26_pattern.c [2021-01-06 10:56:26,096 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 10:56:26,101 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 10:56:26,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 10:56:26,150 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 10:56:26,150 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 10:56:26,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 10:56:26,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 10:56:26,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 10:56:26,151 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 10:56:26,151 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 10:56:26,151 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 10:56:26,164 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-06 10:56:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 10:56:26,170 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:26,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:26,171 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:26,178 INFO L82 PathProgramCache]: Analyzing trace with hash -320975489, now seen corresponding path program 1 times [2021-01-06 10:56:26,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:26,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967470864] [2021-01-06 10:56:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:56:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:56:26,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967470864] [2021-01-06 10:56:26,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:56:26,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 10:56:26,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723267390] [2021-01-06 10:56:26,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 10:56:26,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:26,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 10:56:26,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:56:26,374 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-01-06 10:56:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:26,395 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2021-01-06 10:56:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 10:56:26,397 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 10:56:26,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:26,407 INFO L225 Difference]: With dead ends: 43 [2021-01-06 10:56:26,407 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 10:56:26,411 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 [2021-01-06 10:56:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 10:56:26,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 10:56:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 10:56:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-01-06 10:56:26,450 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2021-01-06 10:56:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:26,451 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-01-06 10:56:26,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 10:56:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-01-06 10:56:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 10:56:26,452 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:26,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:26,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 10:56:26,453 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:26,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:26,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1931938343, now seen corresponding path program 1 times [2021-01-06 10:56:26,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:26,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965115433] [2021-01-06 10:56:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:26,474 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:26,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872435848] [2021-01-06 10:56:26,475 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 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 [2021-01-06 10:56:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:56:26,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 10:56:26,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:56:26,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965115433] [2021-01-06 10:56:26,776 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:26,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872435848] [2021-01-06 10:56:26,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:56:26,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 10:56:26,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562220129] [2021-01-06 10:56:26,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:56:26,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:26,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:56:26,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:56:26,786 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 5 states. [2021-01-06 10:56:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:27,089 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2021-01-06 10:56:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:56:27,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 10:56:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:27,092 INFO L225 Difference]: With dead ends: 44 [2021-01-06 10:56:27,092 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 10:56:27,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 10:56:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 10:56:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-01-06 10:56:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 10:56:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-01-06 10:56:27,101 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 10 [2021-01-06 10:56:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:27,102 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-01-06 10:56:27,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:56:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-01-06 10:56:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 10:56:27,103 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:27,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:27,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 10:56:27,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:27,340 INFO L82 PathProgramCache]: Analyzing trace with hash -438331433, now seen corresponding path program 1 times [2021-01-06 10:56:27,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:27,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100009183] [2021-01-06 10:56:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:27,367 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:27,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190360466] [2021-01-06 10:56:27,385 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 [2021-01-06 10:56:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:56:27,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:56:27,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 10:56:27,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100009183] [2021-01-06 10:56:27,547 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:27,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190360466] [2021-01-06 10:56:27,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:56:27,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:56:27,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368214889] [2021-01-06 10:56:27,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:56:27,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:27,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:56:27,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:56:27,550 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 4 states. [2021-01-06 10:56:27,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:27,669 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2021-01-06 10:56:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:56:27,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-01-06 10:56:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:27,673 INFO L225 Difference]: With dead ends: 51 [2021-01-06 10:56:27,673 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 10:56:27,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:56:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 10:56:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2021-01-06 10:56:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-06 10:56:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-01-06 10:56:27,682 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2021-01-06 10:56:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:27,683 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-01-06 10:56:27,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:56:27,683 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-01-06 10:56:27,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 10:56:27,684 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:27,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:27,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:56:27,898 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:27,900 INFO L82 PathProgramCache]: Analyzing trace with hash -308201553, now seen corresponding path program 1 times [2021-01-06 10:56:27,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:27,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872254016] [2021-01-06 10:56:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:27,919 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:27,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965766383] [2021-01-06 10:56:27,920 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 [2021-01-06 10:56:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:56:28,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 10:56:28,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 10:56:28,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872254016] [2021-01-06 10:56:28,127 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:28,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965766383] [2021-01-06 10:56:28,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:28,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 10:56:28,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561960734] [2021-01-06 10:56:28,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 10:56:28,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:28,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 10:56:28,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 10:56:28,130 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 6 states. [2021-01-06 10:56:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:28,413 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2021-01-06 10:56:28,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 10:56:28,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-01-06 10:56:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:28,415 INFO L225 Difference]: With dead ends: 65 [2021-01-06 10:56:28,416 INFO L226 Difference]: Without dead ends: 45 [2021-01-06 10:56:28,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 10:56:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-06 10:56:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2021-01-06 10:56:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 10:56:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-01-06 10:56:28,425 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 21 [2021-01-06 10:56:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:28,425 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-01-06 10:56:28,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 10:56:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2021-01-06 10:56:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 10:56:28,427 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:28,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:28,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:56:28,642 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:28,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:28,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1610723178, now seen corresponding path program 1 times [2021-01-06 10:56:28,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:28,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609296256] [2021-01-06 10:56:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:28,663 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:28,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577307806] [2021-01-06 10:56:28,663 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 [2021-01-06 10:56:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:56:28,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 10:56:28,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 10:56:28,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609296256] [2021-01-06 10:56:28,967 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:28,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577307806] [2021-01-06 10:56:28,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:28,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 10:56:28,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030421722] [2021-01-06 10:56:28,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 10:56:28,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:28,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 10:56:28,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 10:56:28,971 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 7 states. [2021-01-06 10:56:29,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:29,148 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2021-01-06 10:56:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 10:56:29,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2021-01-06 10:56:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:29,155 INFO L225 Difference]: With dead ends: 100 [2021-01-06 10:56:29,155 INFO L226 Difference]: Without dead ends: 75 [2021-01-06 10:56:29,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 10:56:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-06 10:56:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-01-06 10:56:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 10:56:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2021-01-06 10:56:29,185 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 27 [2021-01-06 10:56:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:29,185 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2021-01-06 10:56:29,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 10:56:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2021-01-06 10:56:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 10:56:29,189 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:29,190 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:29,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:56:29,397 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:29,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1943339208, now seen corresponding path program 1 times [2021-01-06 10:56:29,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:29,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642373443] [2021-01-06 10:56:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:29,412 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:29,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086106732] [2021-01-06 10:56:29,413 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 [2021-01-06 10:56:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:56:29,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 63 conjunts are in the unsatisfiable core [2021-01-06 10:56:29,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:29,675 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-01-06 10:56:29,676 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:29,710 INFO L625 ElimStorePlain]: treesize reduction 5, result has 87.2 percent of original size [2021-01-06 10:56:29,713 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:29,713 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:34 [2021-01-06 10:56:29,819 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:56:29,819 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 85 [2021-01-06 10:56:29,824 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:29,867 INFO L625 ElimStorePlain]: treesize reduction 26, result has 64.4 percent of original size [2021-01-06 10:56:29,868 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:29,868 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2021-01-06 10:56:30,159 INFO L348 Elim1Store]: treesize reduction 25, result has 85.8 percent of original size [2021-01-06 10:56:30,160 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 173 [2021-01-06 10:56:30,166 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:30,237 INFO L625 ElimStorePlain]: treesize reduction 73, result has 48.2 percent of original size [2021-01-06 10:56:30,239 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:30,239 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:72, output treesize:68 [2021-01-06 10:56:30,441 INFO L348 Elim1Store]: treesize reduction 118, result has 56.9 percent of original size [2021-01-06 10:56:30,442 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 179 [2021-01-06 10:56:30,448 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:30,500 INFO L625 ElimStorePlain]: treesize reduction 65, result has 52.9 percent of original size [2021-01-06 10:56:30,501 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:30,501 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:73 [2021-01-06 10:56:31,358 INFO L348 Elim1Store]: treesize reduction 27, result has 67.1 percent of original size [2021-01-06 10:56:31,359 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 75 [2021-01-06 10:56:31,363 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:31,376 INFO L625 ElimStorePlain]: treesize reduction 14, result has 41.7 percent of original size [2021-01-06 10:56:31,379 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:31,379 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:73, output treesize:3 [2021-01-06 10:56:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:56:31,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642373443] [2021-01-06 10:56:31,448 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:31,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086106732] [2021-01-06 10:56:31,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:31,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-01-06 10:56:31,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038286182] [2021-01-06 10:56:31,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 10:56:31,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:31,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 10:56:31,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-01-06 10:56:31,451 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand 28 states. [2021-01-06 10:56:34,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:34,429 INFO L93 Difference]: Finished difference Result 155 states and 202 transitions. [2021-01-06 10:56:34,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 10:56:34,430 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2021-01-06 10:56:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:34,433 INFO L225 Difference]: With dead ends: 155 [2021-01-06 10:56:34,433 INFO L226 Difference]: Without dead ends: 101 [2021-01-06 10:56:34,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=314, Invalid=2236, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 10:56:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-01-06 10:56:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2021-01-06 10:56:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 10:56:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2021-01-06 10:56:34,451 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 45 [2021-01-06 10:56:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:34,451 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2021-01-06 10:56:34,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 10:56:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2021-01-06 10:56:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 10:56:34,456 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:34,456 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:34,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 10:56:34,670 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:34,671 INFO L82 PathProgramCache]: Analyzing trace with hash 922052314, now seen corresponding path program 2 times [2021-01-06 10:56:34,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:34,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511032104] [2021-01-06 10:56:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:34,697 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:34,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828025422] [2021-01-06 10:56:34,703 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 [2021-01-06 10:56:34,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:56:34,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:56:34,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 10:56:34,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 32 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-06 10:56:34,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511032104] [2021-01-06 10:56:34,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:34,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828025422] [2021-01-06 10:56:34,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:34,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 10:56:34,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917229480] [2021-01-06 10:56:34,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 10:56:34,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:34,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 10:56:34,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 10:56:34,881 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand 9 states. [2021-01-06 10:56:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:35,101 INFO L93 Difference]: Finished difference Result 229 states and 292 transitions. [2021-01-06 10:56:35,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 10:56:35,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2021-01-06 10:56:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:35,103 INFO L225 Difference]: With dead ends: 229 [2021-01-06 10:56:35,103 INFO L226 Difference]: Without dead ends: 177 [2021-01-06 10:56:35,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-01-06 10:56:35,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-01-06 10:56:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 139. [2021-01-06 10:56:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-01-06 10:56:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 173 transitions. [2021-01-06 10:56:35,124 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 173 transitions. Word has length 47 [2021-01-06 10:56:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:35,125 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 173 transitions. [2021-01-06 10:56:35,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 10:56:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 173 transitions. [2021-01-06 10:56:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 10:56:35,127 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:35,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:35,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:56:35,341 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:35,342 INFO L82 PathProgramCache]: Analyzing trace with hash -123168592, now seen corresponding path program 3 times [2021-01-06 10:56:35,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:35,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393186111] [2021-01-06 10:56:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:35,358 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:35,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715210100] [2021-01-06 10:56:35,359 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 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 [2021-01-06 10:56:35,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-06 10:56:35,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:56:35,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 10:56:35,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-01-06 10:56:35,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393186111] [2021-01-06 10:56:35,638 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:35,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715210100] [2021-01-06 10:56:35,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:35,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 10:56:35,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786249304] [2021-01-06 10:56:35,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 10:56:35,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:35,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 10:56:35,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 10:56:35,640 INFO L87 Difference]: Start difference. First operand 139 states and 173 transitions. Second operand 9 states. [2021-01-06 10:56:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:36,006 INFO L93 Difference]: Finished difference Result 215 states and 260 transitions. [2021-01-06 10:56:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 10:56:36,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-01-06 10:56:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:36,008 INFO L225 Difference]: With dead ends: 215 [2021-01-06 10:56:36,008 INFO L226 Difference]: Without dead ends: 211 [2021-01-06 10:56:36,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2021-01-06 10:56:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-01-06 10:56:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 159. [2021-01-06 10:56:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2021-01-06 10:56:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2021-01-06 10:56:36,033 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 48 [2021-01-06 10:56:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:36,034 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2021-01-06 10:56:36,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 10:56:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2021-01-06 10:56:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 10:56:36,036 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:36,036 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:36,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:56:36,251 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:36,252 INFO L82 PathProgramCache]: Analyzing trace with hash -328109803, now seen corresponding path program 4 times [2021-01-06 10:56:36,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:36,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340561165] [2021-01-06 10:56:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:36,274 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:36,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712696113] [2021-01-06 10:56:36,275 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 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 [2021-01-06 10:56:36,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:56:36,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:56:36,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 10:56:36,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 50 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-06 10:56:36,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340561165] [2021-01-06 10:56:36,476 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:36,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712696113] [2021-01-06 10:56:36,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:36,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 10:56:36,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638847032] [2021-01-06 10:56:36,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 10:56:36,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:36,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 10:56:36,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 10:56:36,478 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand 9 states. [2021-01-06 10:56:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:36,803 INFO L93 Difference]: Finished difference Result 223 states and 266 transitions. [2021-01-06 10:56:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 10:56:36,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2021-01-06 10:56:36,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:36,805 INFO L225 Difference]: With dead ends: 223 [2021-01-06 10:56:36,806 INFO L226 Difference]: Without dead ends: 118 [2021-01-06 10:56:36,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-01-06 10:56:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-01-06 10:56:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2021-01-06 10:56:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-06 10:56:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 130 transitions. [2021-01-06 10:56:36,828 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 130 transitions. Word has length 52 [2021-01-06 10:56:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:36,828 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 130 transitions. [2021-01-06 10:56:36,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 10:56:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 130 transitions. [2021-01-06 10:56:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 10:56:36,838 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:36,838 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:37,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 10:56:37,052 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash 139447478, now seen corresponding path program 5 times [2021-01-06 10:56:37,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:37,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970568039] [2021-01-06 10:56:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:37,064 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:37,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677605329] [2021-01-06 10:56:37,065 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 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 [2021-01-06 10:56:37,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-06 10:56:37,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:56:37,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 10:56:37,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-01-06 10:56:37,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970568039] [2021-01-06 10:56:37,418 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:37,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677605329] [2021-01-06 10:56:37,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:37,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 10:56:37,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652475317] [2021-01-06 10:56:37,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 10:56:37,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:37,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 10:56:37,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-01-06 10:56:37,420 INFO L87 Difference]: Start difference. First operand 103 states and 130 transitions. Second operand 12 states. [2021-01-06 10:56:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:38,660 INFO L93 Difference]: Finished difference Result 398 states and 526 transitions. [2021-01-06 10:56:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-06 10:56:38,661 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2021-01-06 10:56:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:38,668 INFO L225 Difference]: With dead ends: 398 [2021-01-06 10:56:38,668 INFO L226 Difference]: Without dead ends: 305 [2021-01-06 10:56:38,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 10:56:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-01-06 10:56:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 200. [2021-01-06 10:56:38,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-01-06 10:56:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 247 transitions. [2021-01-06 10:56:38,715 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 247 transitions. Word has length 59 [2021-01-06 10:56:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:38,715 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 247 transitions. [2021-01-06 10:56:38,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 10:56:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 247 transitions. [2021-01-06 10:56:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-06 10:56:38,717 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:38,717 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:38,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:56:38,931 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:38,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash 248155765, now seen corresponding path program 6 times [2021-01-06 10:56:38,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:38,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924169967] [2021-01-06 10:56:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:38,959 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:38,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518896003] [2021-01-06 10:56:38,959 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 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 [2021-01-06 10:56:39,143 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 10:56:39,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:56:39,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 10:56:39,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:39,235 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:56:39,294 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:56:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 53 proven. 44 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-06 10:56:39,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924169967] [2021-01-06 10:56:39,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:39,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518896003] [2021-01-06 10:56:39,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:39,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 10:56:39,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010656172] [2021-01-06 10:56:39,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 10:56:39,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:39,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 10:56:39,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-01-06 10:56:39,457 INFO L87 Difference]: Start difference. First operand 200 states and 247 transitions. Second operand 12 states. [2021-01-06 10:56:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:40,083 INFO L93 Difference]: Finished difference Result 506 states and 634 transitions. [2021-01-06 10:56:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 10:56:40,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2021-01-06 10:56:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:40,086 INFO L225 Difference]: With dead ends: 506 [2021-01-06 10:56:40,087 INFO L226 Difference]: Without dead ends: 303 [2021-01-06 10:56:40,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-01-06 10:56:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-01-06 10:56:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 276. [2021-01-06 10:56:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2021-01-06 10:56:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 349 transitions. [2021-01-06 10:56:40,118 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 349 transitions. Word has length 60 [2021-01-06 10:56:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:40,118 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 349 transitions. [2021-01-06 10:56:40,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 10:56:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 349 transitions. [2021-01-06 10:56:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 10:56:40,120 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:40,121 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:40,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:56:40,335 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:40,336 INFO L82 PathProgramCache]: Analyzing trace with hash 801857036, now seen corresponding path program 7 times [2021-01-06 10:56:40,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:40,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138392929] [2021-01-06 10:56:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:40,348 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:40,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82093126] [2021-01-06 10:56:40,348 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 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 [2021-01-06 10:56:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:56:40,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 10:56:40,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 44 proven. 53 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-01-06 10:56:40,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138392929] [2021-01-06 10:56:40,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:40,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82093126] [2021-01-06 10:56:40,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:40,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 10:56:40,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587050839] [2021-01-06 10:56:40,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 10:56:40,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:40,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 10:56:40,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-06 10:56:40,556 INFO L87 Difference]: Start difference. First operand 276 states and 349 transitions. Second operand 11 states. [2021-01-06 10:56:40,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:40,887 INFO L93 Difference]: Finished difference Result 854 states and 1076 transitions. [2021-01-06 10:56:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 10:56:40,888 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2021-01-06 10:56:40,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:40,891 INFO L225 Difference]: With dead ends: 854 [2021-01-06 10:56:40,892 INFO L226 Difference]: Without dead ends: 618 [2021-01-06 10:56:40,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-01-06 10:56:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-01-06 10:56:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 492. [2021-01-06 10:56:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2021-01-06 10:56:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 611 transitions. [2021-01-06 10:56:40,960 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 611 transitions. Word has length 64 [2021-01-06 10:56:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:40,960 INFO L481 AbstractCegarLoop]: Abstraction has 492 states and 611 transitions. [2021-01-06 10:56:40,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 10:56:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 611 transitions. [2021-01-06 10:56:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-01-06 10:56:40,962 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:40,962 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:41,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 10:56:41,175 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:41,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:41,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1026138516, now seen corresponding path program 8 times [2021-01-06 10:56:41,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:41,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767472734] [2021-01-06 10:56:41,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:41,187 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:41,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703545347] [2021-01-06 10:56:41,188 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 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 [2021-01-06 10:56:41,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:56:41,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:56:41,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 10:56:41,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 12 proven. 80 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-01-06 10:56:41,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767472734] [2021-01-06 10:56:41,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:41,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703545347] [2021-01-06 10:56:41,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:41,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 10:56:41,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803284704] [2021-01-06 10:56:41,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 10:56:41,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:41,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 10:56:41,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-01-06 10:56:41,418 INFO L87 Difference]: Start difference. First operand 492 states and 611 transitions. Second operand 10 states. [2021-01-06 10:56:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:41,685 INFO L93 Difference]: Finished difference Result 748 states and 917 transitions. [2021-01-06 10:56:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 10:56:41,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2021-01-06 10:56:41,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:41,690 INFO L225 Difference]: With dead ends: 748 [2021-01-06 10:56:41,690 INFO L226 Difference]: Without dead ends: 664 [2021-01-06 10:56:41,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-01-06 10:56:41,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-01-06 10:56:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 480. [2021-01-06 10:56:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2021-01-06 10:56:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 594 transitions. [2021-01-06 10:56:41,736 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 594 transitions. Word has length 67 [2021-01-06 10:56:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:41,736 INFO L481 AbstractCegarLoop]: Abstraction has 480 states and 594 transitions. [2021-01-06 10:56:41,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 10:56:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 594 transitions. [2021-01-06 10:56:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 10:56:41,738 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:41,738 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:41,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 10:56:41,952 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:41,953 INFO L82 PathProgramCache]: Analyzing trace with hash -10882076, now seen corresponding path program 9 times [2021-01-06 10:56:41,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:41,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017157628] [2021-01-06 10:56:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:41,983 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:41,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [660777720] [2021-01-06 10:56:41,984 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 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 [2021-01-06 10:56:42,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 10:56:42,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:56:42,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 10:56:42,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:42,354 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:56:42,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:56:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-01-06 10:56:42,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017157628] [2021-01-06 10:56:42,470 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:42,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660777720] [2021-01-06 10:56:42,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:56:42,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-06 10:56:42,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56816553] [2021-01-06 10:56:42,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 10:56:42,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:42,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 10:56:42,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-06 10:56:42,472 INFO L87 Difference]: Start difference. First operand 480 states and 594 transitions. Second operand 12 states. [2021-01-06 10:56:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:56:43,269 INFO L93 Difference]: Finished difference Result 1274 states and 1600 transitions. [2021-01-06 10:56:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 10:56:43,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2021-01-06 10:56:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:56:43,275 INFO L225 Difference]: With dead ends: 1274 [2021-01-06 10:56:43,275 INFO L226 Difference]: Without dead ends: 860 [2021-01-06 10:56:43,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-01-06 10:56:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-01-06 10:56:43,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 571. [2021-01-06 10:56:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-01-06 10:56:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 706 transitions. [2021-01-06 10:56:43,339 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 706 transitions. Word has length 74 [2021-01-06 10:56:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:56:43,340 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 706 transitions. [2021-01-06 10:56:43,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 10:56:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 706 transitions. [2021-01-06 10:56:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 10:56:43,342 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:56:43,342 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:56:43,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 10:56:43,556 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:56:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:56:43,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1654572962, now seen corresponding path program 10 times [2021-01-06 10:56:43,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:56:43,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561244065] [2021-01-06 10:56:43,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:56:43,582 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:56:43,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770137122] [2021-01-06 10:56:43,582 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 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 [2021-01-06 10:56:44,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:56:44,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:56:44,074 WARN L261 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 102 conjunts are in the unsatisfiable core [2021-01-06 10:56:44,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:56:44,127 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-01-06 10:56:44,128 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:44,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:56:44,142 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:44,142 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2021-01-06 10:56:44,233 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:56:44,234 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 85 [2021-01-06 10:56:44,238 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:44,278 INFO L625 ElimStorePlain]: treesize reduction 26, result has 65.8 percent of original size [2021-01-06 10:56:44,279 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:44,280 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50 [2021-01-06 10:56:44,468 INFO L348 Elim1Store]: treesize reduction 88, result has 48.5 percent of original size [2021-01-06 10:56:44,468 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 105 [2021-01-06 10:56:44,471 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:44,526 INFO L625 ElimStorePlain]: treesize reduction 36, result has 65.7 percent of original size [2021-01-06 10:56:44,527 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:44,528 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:83, output treesize:69 [2021-01-06 10:56:44,904 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-01-06 10:56:44,906 INFO L348 Elim1Store]: treesize reduction 76, result has 75.0 percent of original size [2021-01-06 10:56:44,906 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 253 [2021-01-06 10:56:44,915 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:45,013 INFO L625 ElimStorePlain]: treesize reduction 110, result has 44.7 percent of original size [2021-01-06 10:56:45,017 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:45,017 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2021-01-06 10:56:45,309 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2021-01-06 10:56:45,310 INFO L348 Elim1Store]: treesize reduction 222, result has 53.1 percent of original size [2021-01-06 10:56:45,311 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 281 [2021-01-06 10:56:45,317 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:45,416 INFO L625 ElimStorePlain]: treesize reduction 116, result has 48.4 percent of original size [2021-01-06 10:56:45,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:45,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:109 [2021-01-06 10:56:45,790 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 51 [2021-01-06 10:56:45,791 INFO L348 Elim1Store]: treesize reduction 335, result has 42.0 percent of original size [2021-01-06 10:56:45,791 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 274 [2021-01-06 10:56:45,806 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:45,907 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-01-06 10:56:45,907 INFO L625 ElimStorePlain]: treesize reduction 94, result has 54.8 percent of original size [2021-01-06 10:56:45,908 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:45,908 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:114 [2021-01-06 10:56:51,476 WARN L197 SmtUtils]: Spent 5.26 s on a formula simplification. DAG size of input: 135 DAG size of output: 111 [2021-01-06 10:56:51,477 INFO L348 Elim1Store]: treesize reduction 152, result has 82.2 percent of original size [2021-01-06 10:56:51,478 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 246 treesize of output 749 [2021-01-06 10:56:51,494 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:51,699 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2021-01-06 10:56:51,700 INFO L625 ElimStorePlain]: treesize reduction 258, result has 34.0 percent of original size [2021-01-06 10:56:51,703 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:51,703 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:261, output treesize:133 [2021-01-06 10:56:52,737 WARN L197 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 116 [2021-01-06 10:56:52,738 INFO L348 Elim1Store]: treesize reduction 376, result has 65.1 percent of original size [2021-01-06 10:56:52,739 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 136 treesize of output 741 [2021-01-06 10:56:52,752 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:52,966 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2021-01-06 10:56:52,967 INFO L625 ElimStorePlain]: treesize reduction 246, result has 37.9 percent of original size [2021-01-06 10:56:52,970 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:52,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:154, output treesize:150 [2021-01-06 10:56:53,695 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 70 [2021-01-06 10:56:53,702 INFO L348 Elim1Store]: treesize reduction 534, result has 32.1 percent of original size [2021-01-06 10:56:53,702 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 104 treesize of output 292 [2021-01-06 10:56:53,713 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:53,837 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2021-01-06 10:56:53,838 INFO L625 ElimStorePlain]: treesize reduction 77, result has 58.6 percent of original size [2021-01-06 10:56:53,838 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:53,839 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:113, output treesize:109 [2021-01-06 10:56:57,974 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 96 [2021-01-06 10:56:57,975 INFO L348 Elim1Store]: treesize reduction 263, result has 51.7 percent of original size [2021-01-06 10:56:57,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 142 treesize of output 320 [2021-01-06 10:56:57,985 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:56:58,013 INFO L625 ElimStorePlain]: treesize reduction 32, result has 23.8 percent of original size [2021-01-06 10:56:58,015 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:56:58,016 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:148, output treesize:3 [2021-01-06 10:56:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:56:58,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561244065] [2021-01-06 10:56:58,350 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:56:58,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770137122] [2021-01-06 10:56:58,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:56:58,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-01-06 10:56:58,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573621904] [2021-01-06 10:56:58,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-06 10:56:58,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:56:58,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-06 10:56:58,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1856, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 10:56:58,353 INFO L87 Difference]: Start difference. First operand 571 states and 706 transitions. Second operand 45 states. [2021-01-06 10:56:59,927 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-01-06 10:57:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:57:02,663 INFO L93 Difference]: Finished difference Result 1064 states and 1301 transitions. [2021-01-06 10:57:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-01-06 10:57:02,664 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 78 [2021-01-06 10:57:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:57:02,668 INFO L225 Difference]: With dead ends: 1064 [2021-01-06 10:57:02,668 INFO L226 Difference]: Without dead ends: 634 [2021-01-06 10:57:02,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2021-01-06 10:57:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-01-06 10:57:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 600. [2021-01-06 10:57:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2021-01-06 10:57:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 734 transitions. [2021-01-06 10:57:02,733 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 734 transitions. Word has length 78 [2021-01-06 10:57:02,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:57:02,733 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 734 transitions. [2021-01-06 10:57:02,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2021-01-06 10:57:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 734 transitions. [2021-01-06 10:57:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-06 10:57:02,735 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:57:02,736 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 6, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:57:02,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:57:02,950 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:57:02,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:57:02,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1739756283, now seen corresponding path program 11 times [2021-01-06 10:57:02,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:57:02,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856360292] [2021-01-06 10:57:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:57:02,965 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:57:02,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606181504] [2021-01-06 10:57:02,965 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 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 [2021-01-06 10:57:03,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-01-06 10:57:03,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:57:03,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 10:57:03,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:57:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 156 proven. 49 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-01-06 10:57:03,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856360292] [2021-01-06 10:57:03,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:57:03,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606181504] [2021-01-06 10:57:03,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:57:03,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 10:57:03,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773151687] [2021-01-06 10:57:03,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 10:57:03,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:57:03,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 10:57:03,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-01-06 10:57:03,404 INFO L87 Difference]: Start difference. First operand 600 states and 734 transitions. Second operand 12 states. [2021-01-06 10:57:05,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:57:05,131 INFO L93 Difference]: Finished difference Result 1303 states and 1598 transitions. [2021-01-06 10:57:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-06 10:57:05,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2021-01-06 10:57:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:57:05,136 INFO L225 Difference]: With dead ends: 1303 [2021-01-06 10:57:05,136 INFO L226 Difference]: Without dead ends: 774 [2021-01-06 10:57:05,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2021-01-06 10:57:05,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-01-06 10:57:05,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 553. [2021-01-06 10:57:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2021-01-06 10:57:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 636 transitions. [2021-01-06 10:57:05,200 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 636 transitions. Word has length 82 [2021-01-06 10:57:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:57:05,201 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 636 transitions. [2021-01-06 10:57:05,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 10:57:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 636 transitions. [2021-01-06 10:57:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-06 10:57:05,203 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:57:05,203 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 8, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:57:05,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 10:57:05,418 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:57:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:57:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1382474117, now seen corresponding path program 12 times [2021-01-06 10:57:05,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:57:05,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611973807] [2021-01-06 10:57:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:57:05,428 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:57:05,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939054134] [2021-01-06 10:57:05,428 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 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 [2021-01-06 10:57:05,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-06 10:57:05,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:57:05,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 10:57:05,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:57:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 12 proven. 211 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-01-06 10:57:05,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611973807] [2021-01-06 10:57:05,944 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:57:05,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939054134] [2021-01-06 10:57:05,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:57:05,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 10:57:05,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122708638] [2021-01-06 10:57:05,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 10:57:05,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:57:05,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 10:57:05,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-01-06 10:57:05,946 INFO L87 Difference]: Start difference. First operand 553 states and 636 transitions. Second operand 11 states. [2021-01-06 10:57:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:57:06,388 INFO L93 Difference]: Finished difference Result 1144 states and 1315 transitions. [2021-01-06 10:57:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 10:57:06,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2021-01-06 10:57:06,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:57:06,393 INFO L225 Difference]: With dead ends: 1144 [2021-01-06 10:57:06,393 INFO L226 Difference]: Without dead ends: 990 [2021-01-06 10:57:06,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-06 10:57:06,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-01-06 10:57:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 762. [2021-01-06 10:57:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2021-01-06 10:57:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 877 transitions. [2021-01-06 10:57:06,473 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 877 transitions. Word has length 84 [2021-01-06 10:57:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:57:06,474 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 877 transitions. [2021-01-06 10:57:06,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 10:57:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 877 transitions. [2021-01-06 10:57:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-06 10:57:06,476 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:57:06,476 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:57:06,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 10:57:06,690 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:57:06,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:57:06,691 INFO L82 PathProgramCache]: Analyzing trace with hash -518200243, now seen corresponding path program 13 times [2021-01-06 10:57:06,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:57:06,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671852019] [2021-01-06 10:57:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:57:06,699 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:57:06,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329406607] [2021-01-06 10:57:06,700 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 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 [2021-01-06 10:57:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:57:06,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 10:57:06,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:57:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 169 proven. 84 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-01-06 10:57:06,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671852019] [2021-01-06 10:57:06,995 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:57:06,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329406607] [2021-01-06 10:57:06,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:57:06,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 10:57:06,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746723641] [2021-01-06 10:57:06,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 10:57:06,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:57:06,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 10:57:06,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-06 10:57:06,997 INFO L87 Difference]: Start difference. First operand 762 states and 877 transitions. Second operand 11 states. [2021-01-06 10:57:07,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:57:07,869 INFO L93 Difference]: Finished difference Result 1075 states and 1206 transitions. [2021-01-06 10:57:07,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-06 10:57:07,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2021-01-06 10:57:07,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:57:07,873 INFO L225 Difference]: With dead ends: 1075 [2021-01-06 10:57:07,874 INFO L226 Difference]: Without dead ends: 858 [2021-01-06 10:57:07,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=585, Unknown=0, NotChecked=0, Total=870 [2021-01-06 10:57:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-01-06 10:57:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 747. [2021-01-06 10:57:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2021-01-06 10:57:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 859 transitions. [2021-01-06 10:57:07,957 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 859 transitions. Word has length 87 [2021-01-06 10:57:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:57:07,958 INFO L481 AbstractCegarLoop]: Abstraction has 747 states and 859 transitions. [2021-01-06 10:57:07,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 10:57:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 859 transitions. [2021-01-06 10:57:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-06 10:57:07,960 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:57:07,960 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 9, 9, 9, 7, 5, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:57:08,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 10:57:08,173 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:57:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:57:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash -620369941, now seen corresponding path program 14 times [2021-01-06 10:57:08,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:57:08,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043375749] [2021-01-06 10:57:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:57:08,194 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:57:08,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853043054] [2021-01-06 10:57:08,195 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 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 [2021-01-06 10:57:08,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:57:08,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:57:08,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 10:57:08,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:57:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 239 proven. 78 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-01-06 10:57:08,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043375749] [2021-01-06 10:57:08,518 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:57:08,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853043054] [2021-01-06 10:57:08,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:57:08,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 10:57:08,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134081816] [2021-01-06 10:57:08,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 10:57:08,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:57:08,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 10:57:08,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-01-06 10:57:08,519 INFO L87 Difference]: Start difference. First operand 747 states and 859 transitions. Second operand 12 states. [2021-01-06 10:57:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:57:09,035 INFO L93 Difference]: Finished difference Result 1034 states and 1180 transitions. [2021-01-06 10:57:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 10:57:09,035 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2021-01-06 10:57:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:57:09,039 INFO L225 Difference]: With dead ends: 1034 [2021-01-06 10:57:09,039 INFO L226 Difference]: Without dead ends: 870 [2021-01-06 10:57:09,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-01-06 10:57:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-01-06 10:57:09,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 699. [2021-01-06 10:57:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2021-01-06 10:57:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 808 transitions. [2021-01-06 10:57:09,109 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 808 transitions. Word has length 100 [2021-01-06 10:57:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:57:09,109 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 808 transitions. [2021-01-06 10:57:09,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 10:57:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 808 transitions. [2021-01-06 10:57:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-01-06 10:57:09,111 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:57:09,111 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 12, 8, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:57:09,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:57:09,325 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:57:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:57:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1777378164, now seen corresponding path program 15 times [2021-01-06 10:57:09,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:57:09,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209122490] [2021-01-06 10:57:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:57:09,334 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:57:09,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512581982] [2021-01-06 10:57:09,334 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 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 [2021-01-06 10:57:09,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-06 10:57:09,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:57:09,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 10:57:09,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:57:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 177 proven. 11 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2021-01-06 10:57:09,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209122490] [2021-01-06 10:57:09,750 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:57:09,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512581982] [2021-01-06 10:57:09,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:57:09,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 10:57:09,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499673118] [2021-01-06 10:57:09,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 10:57:09,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:57:09,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 10:57:09,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 10:57:09,752 INFO L87 Difference]: Start difference. First operand 699 states and 808 transitions. Second operand 9 states. [2021-01-06 10:57:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:57:10,340 INFO L93 Difference]: Finished difference Result 1535 states and 1778 transitions. [2021-01-06 10:57:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 10:57:10,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2021-01-06 10:57:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:57:10,351 INFO L225 Difference]: With dead ends: 1535 [2021-01-06 10:57:10,352 INFO L226 Difference]: Without dead ends: 1515 [2021-01-06 10:57:10,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-01-06 10:57:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2021-01-06 10:57:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 699. [2021-01-06 10:57:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2021-01-06 10:57:10,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 808 transitions. [2021-01-06 10:57:10,449 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 808 transitions. Word has length 103 [2021-01-06 10:57:10,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:57:10,450 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 808 transitions. [2021-01-06 10:57:10,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 10:57:10,450 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 808 transitions. [2021-01-06 10:57:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-01-06 10:57:10,452 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:57:10,452 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 12, 10, 6, 6, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:57:10,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:57:10,666 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:57:10,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:57:10,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1666115448, now seen corresponding path program 16 times [2021-01-06 10:57:10,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:57:10,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618164016] [2021-01-06 10:57:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:57:10,680 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:57:10,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683238914] [2021-01-06 10:57:10,681 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 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 [2021-01-06 10:57:10,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:57:10,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:57:10,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 10:57:10,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:57:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 45 proven. 157 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-01-06 10:57:10,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618164016] [2021-01-06 10:57:10,959 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:57:10,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683238914] [2021-01-06 10:57:10,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:57:10,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 10:57:10,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411973873] [2021-01-06 10:57:10,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 10:57:10,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:57:10,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 10:57:10,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-01-06 10:57:10,961 INFO L87 Difference]: Start difference. First operand 699 states and 808 transitions. Second operand 10 states. [2021-01-06 10:57:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:57:11,326 INFO L93 Difference]: Finished difference Result 712 states and 820 transitions. [2021-01-06 10:57:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 10:57:11,327 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2021-01-06 10:57:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:57:11,331 INFO L225 Difference]: With dead ends: 712 [2021-01-06 10:57:11,331 INFO L226 Difference]: Without dead ends: 692 [2021-01-06 10:57:11,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-01-06 10:57:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-01-06 10:57:11,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 500. [2021-01-06 10:57:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2021-01-06 10:57:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 576 transitions. [2021-01-06 10:57:11,404 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 576 transitions. Word has length 103 [2021-01-06 10:57:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:57:11,405 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 576 transitions. [2021-01-06 10:57:11,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 10:57:11,405 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 576 transitions. [2021-01-06 10:57:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-01-06 10:57:11,406 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:57:11,406 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 12, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:57:11,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 10:57:11,620 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:57:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:57:11,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1412527961, now seen corresponding path program 17 times [2021-01-06 10:57:11,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:57:11,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263415456] [2021-01-06 10:57:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:57:11,630 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 10:57:11,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198435305] [2021-01-06 10:57:11,630 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 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 [2021-01-06 10:57:18,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-01-06 10:57:18,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:57:18,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 163 conjunts are in the unsatisfiable core [2021-01-06 10:57:18,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:57:18,274 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-01-06 10:57:18,275 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:18,294 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:18,295 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:57:18,296 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2021-01-06 10:57:18,387 INFO L348 Elim1Store]: treesize reduction 65, result has 20.7 percent of original size [2021-01-06 10:57:18,388 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-01-06 10:57:18,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:18,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:18,416 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:57:18,416 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2021-01-06 10:57:18,542 INFO L348 Elim1Store]: treesize reduction 156, result has 18.3 percent of original size [2021-01-06 10:57:18,542 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 57 [2021-01-06 10:57:18,544 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:18,571 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:18,572 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:57:18,572 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2021-01-06 10:57:18,818 INFO L348 Elim1Store]: treesize reduction 276, result has 15.9 percent of original size [2021-01-06 10:57:18,819 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 77 [2021-01-06 10:57:18,821 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:18,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:18,860 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:57:18,860 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:90 [2021-01-06 10:57:19,503 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2021-01-06 10:57:19,504 INFO L348 Elim1Store]: treesize reduction 105, result has 69.7 percent of original size [2021-01-06 10:57:19,504 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 269 [2021-01-06 10:57:19,511 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:19,698 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2021-01-06 10:57:19,699 INFO L625 ElimStorePlain]: treesize reduction 139, result has 47.1 percent of original size [2021-01-06 10:57:19,704 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:19,706 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:19,710 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. [2021-01-06 10:57:19,710 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:98, output treesize:124 [2021-01-06 10:57:19,722 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:19,723 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:19,824 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:19,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:20,240 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2021-01-06 10:57:20,284 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 10:57:20,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:57:20,373 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 0 case distinctions, treesize of input 78 treesize of output 72 [2021-01-06 10:57:20,376 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:20,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,540 INFO L244 Elim1Store]: Index analysis took 151 ms [2021-01-06 10:57:20,639 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:20,640 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 231 [2021-01-06 10:57:20,645 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:20,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:20,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:57:20,689 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 0 case distinctions, treesize of input 78 treesize of output 72 [2021-01-06 10:57:20,692 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:21,308 WARN L197 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 86 [2021-01-06 10:57:21,309 INFO L625 ElimStorePlain]: treesize reduction 170, result has 66.1 percent of original size [2021-01-06 10:57:21,314 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. [2021-01-06 10:57:21,314 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:408, output treesize:332 [2021-01-06 10:57:21,670 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-01-06 10:57:22,043 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-01-06 10:57:22,085 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-01-06 10:57:22,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,344 INFO L244 Elim1Store]: Index analysis took 234 ms [2021-01-06 10:57:22,453 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:22,453 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 295 [2021-01-06 10:57:22,463 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:22,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:57:22,537 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 0 case distinctions, treesize of input 81 treesize of output 75 [2021-01-06 10:57:22,540 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:22,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:22,611 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 89 [2021-01-06 10:57:22,613 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:22,634 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-01-06 10:57:22,635 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:23,389 WARN L197 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 88 [2021-01-06 10:57:23,391 INFO L625 ElimStorePlain]: treesize reduction 150, result has 72.7 percent of original size [2021-01-06 10:57:23,406 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:23,408 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. [2021-01-06 10:57:23,408 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:415, output treesize:400 [2021-01-06 10:57:23,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:23,950 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-01-06 10:57:23,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:57:24,992 WARN L197 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2021-01-06 10:57:25,485 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-01-06 10:57:26,230 WARN L197 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 90 [2021-01-06 10:57:26,231 INFO L348 Elim1Store]: treesize reduction 495, result has 46.2 percent of original size [2021-01-06 10:57:26,231 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 121 treesize of output 468 [2021-01-06 10:57:26,241 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:26,575 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2021-01-06 10:57:26,576 INFO L625 ElimStorePlain]: treesize reduction 241, result has 40.5 percent of original size [2021-01-06 10:57:26,579 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. [2021-01-06 10:57:26,579 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:176, output treesize:164 [2021-01-06 10:57:26,822 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:57:27,084 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:57:27,419 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-01-06 10:57:28,016 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-01-06 10:57:29,737 WARN L197 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 210 DAG size of output: 162 [2021-01-06 10:57:29,738 INFO L348 Elim1Store]: treesize reduction 258, result has 77.8 percent of original size [2021-01-06 10:57:29,738 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 143 treesize of output 957 [2021-01-06 10:57:29,757 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:30,285 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 77 [2021-01-06 10:57:30,286 INFO L625 ElimStorePlain]: treesize reduction 515, result has 27.0 percent of original size [2021-01-06 10:57:30,289 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. [2021-01-06 10:57:30,289 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:199, output treesize:190 [2021-01-06 10:57:30,610 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-01-06 10:57:30,964 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-01-06 10:57:30,992 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:57:31,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:31,216 INFO L244 Elim1Store]: Index analysis took 209 ms [2021-01-06 10:57:31,242 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 183 [2021-01-06 10:57:31,246 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:31,255 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-01-06 10:57:31,256 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:31,433 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-01-06 10:57:31,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:31,437 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. [2021-01-06 10:57:31,438 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:231, output treesize:223 [2021-01-06 10:57:31,820 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-01-06 10:57:32,211 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-01-06 10:57:34,421 WARN L197 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 296 DAG size of output: 170 [2021-01-06 10:57:34,421 INFO L348 Elim1Store]: treesize reduction 814, result has 53.6 percent of original size [2021-01-06 10:57:34,422 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 185 treesize of output 1005 [2021-01-06 10:57:34,457 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:35,170 WARN L197 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 84 [2021-01-06 10:57:35,171 INFO L625 ElimStorePlain]: treesize reduction 525, result has 30.8 percent of original size [2021-01-06 10:57:35,175 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. [2021-01-06 10:57:35,175 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:243, output treesize:234 [2021-01-06 10:57:35,717 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 10:57:36,218 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 10:57:36,251 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:57:36,267 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-01-06 10:57:36,268 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:36,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:36,449 INFO L244 Elim1Store]: Index analysis took 171 ms [2021-01-06 10:57:36,480 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 219 [2021-01-06 10:57:36,484 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:36,704 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-01-06 10:57:36,704 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:36,707 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 2 xjuncts. [2021-01-06 10:57:36,708 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:260, output treesize:252 [2021-01-06 10:57:39,473 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-01-06 10:57:46,400 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-01-06 10:57:47,150 WARN L197 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-01-06 10:57:47,181 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:57:47,223 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:47,223 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 105 [2021-01-06 10:57:47,225 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:47,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:47,440 INFO L244 Elim1Store]: Index analysis took 206 ms [2021-01-06 10:57:47,608 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-01-06 10:57:47,609 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:47,610 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 68 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 10 case distinctions, treesize of input 214 treesize of output 502 [2021-01-06 10:57:47,622 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:48,227 WARN L197 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 95 [2021-01-06 10:57:48,229 INFO L625 ElimStorePlain]: treesize reduction 353, result has 45.6 percent of original size [2021-01-06 10:57:48,232 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 2 xjuncts. [2021-01-06 10:57:48,232 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:304, output treesize:296 [2021-01-06 10:57:49,162 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2021-01-06 10:57:49,841 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-01-06 10:57:56,417 WARN L197 SmtUtils]: Spent 6.52 s on a formula simplification. DAG size of input: 457 DAG size of output: 332 [2021-01-06 10:57:56,418 INFO L348 Elim1Store]: treesize reduction 782, result has 71.7 percent of original size [2021-01-06 10:57:56,419 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 219 treesize of output 2049 [2021-01-06 10:57:56,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:57,275 WARN L197 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 88 [2021-01-06 10:57:57,276 INFO L625 ElimStorePlain]: treesize reduction 783, result has 23.8 percent of original size [2021-01-06 10:57:57,279 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. [2021-01-06 10:57:57,279 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:248, output treesize:244 [2021-01-06 10:57:57,853 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-01-06 10:57:58,422 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-01-06 10:57:58,445 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:57:58,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:58,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:57:59,023 INFO L244 Elim1Store]: Index analysis took 566 ms [2021-01-06 10:57:59,177 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-01-06 10:57:59,178 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:57:59,178 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 95 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 10 case distinctions, treesize of input 236 treesize of output 496 [2021-01-06 10:57:59,188 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:59,197 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-01-06 10:57:59,198 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:57:59,581 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 92 [2021-01-06 10:57:59,582 INFO L625 ElimStorePlain]: treesize reduction 134, result has 67.5 percent of original size [2021-01-06 10:57:59,585 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. [2021-01-06 10:57:59,585 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:286, output treesize:278 [2021-01-06 10:58:00,082 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-01-06 10:58:00,600 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-01-06 10:58:00,630 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 17, 1] term [2021-01-06 10:58:00,630 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:58:00,643 INFO L443 ElimStorePlain]: Different costs {2=[v_prenex_3], 240=[|v_#memory_int_37|]} [2021-01-06 10:58:00,672 INFO L348 Elim1Store]: treesize reduction 65, result has 20.7 percent of original size [2021-01-06 10:58:00,672 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-01-06 10:58:00,674 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:58:01,131 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-01-06 10:58:01,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:58:01,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:58:01,508 INFO L244 Elim1Store]: Index analysis took 367 ms [2021-01-06 10:58:01,635 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-01-06 10:58:01,636 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:58:01,636 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 110 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 10 case distinctions, treesize of input 308 treesize of output 502 [2021-01-06 10:58:01,646 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:58:02,045 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2021-01-06 10:58:02,047 INFO L625 ElimStorePlain]: treesize reduction 175, result has 66.4 percent of original size [2021-01-06 10:58:02,051 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2021-01-06 10:58:02,051 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:364, output treesize:346 [2021-01-06 10:58:28,329 WARN L197 SmtUtils]: Spent 12.10 s on a formula simplification that was a NOOP. DAG size: 104 [2021-01-06 10:58:50,947 WARN L197 SmtUtils]: Spent 16.08 s on a formula simplification that was a NOOP. DAG size: 107 [2021-01-06 10:59:10,117 WARN L197 SmtUtils]: Spent 10.18 s on a formula simplification. DAG size of input: 112 DAG size of output: 24 [2021-01-06 10:59:50,548 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:59:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 6 proven. 822 refuted. 4 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 10:59:51,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263415456] [2021-01-06 10:59:51,180 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 10:59:51,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198435305] [2021-01-06 10:59:51,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 10:59:51,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2021-01-06 10:59:51,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652920076] [2021-01-06 10:59:51,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-01-06 10:59:51,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:59:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-01-06 10:59:51,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=3949, Unknown=31, NotChecked=0, Total=4160 [2021-01-06 10:59:51,183 INFO L87 Difference]: Start difference. First operand 500 states and 576 transitions. Second operand 65 states. [2021-01-06 11:00:25,342 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51