/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-tiling/tcpy.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 10:28:09,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 10:28:09,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 10:28:09,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 10:28:09,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 10:28:09,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 10:28:09,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 10:28:09,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 10:28:09,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 10:28:09,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 10:28:09,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 10:28:09,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 10:28:09,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 10:28:09,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 10:28:09,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 10:28:09,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 10:28:09,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 10:28:09,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 10:28:09,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 10:28:09,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 10:28:09,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 10:28:09,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 10:28:09,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 10:28:09,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 10:28:09,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 10:28:09,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 10:28:09,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 10:28:09,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 10:28:09,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 10:28:09,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 10:28:09,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 10:28:09,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 10:28:09,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 10:28:09,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 10:28:09,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 10:28:09,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 10:28:09,309 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 10:28:09,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 10:28:09,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 10:28:09,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 10:28:09,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 10:28:09,383 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 10:28:09,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 10:28:09,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 10:28:09,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 10:28:09,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 10:28:09,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 10:28:09,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 10:28:09,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 10:28:09,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 10:28:09,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 10:28:09,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 10:28:09,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 10:28:09,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 10:28:09,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:28:09,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 10:28:09,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 10:28:09,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 10:28:09,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 10:28:09,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 10:28:09,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 10:28:09,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 10:28:09,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 10:28:09,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 10:28:09,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 10:28:09,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 10:28:09,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 10:28:09,999 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 10:28:10,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/tcpy.c [2021-01-06 10:28:10,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/47a114441/3139780264d44bed889f76cf7986cf0d/FLAG5b9d745ed [2021-01-06 10:28:10,850 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 10:28:10,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-tiling/tcpy.c [2021-01-06 10:28:10,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/47a114441/3139780264d44bed889f76cf7986cf0d/FLAG5b9d745ed [2021-01-06 10:28:11,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/47a114441/3139780264d44bed889f76cf7986cf0d [2021-01-06 10:28:11,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 10:28:11,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 10:28:11,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 10:28:11,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 10:28:11,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 10:28:11,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e07a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11, skipping insertion in model container [2021-01-06 10:28:11,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 10:28:11,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 10:28:11,459 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-tiling/tcpy.c[395,408] left hand side expression in assignment: lhs: VariableLHS[~SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~acopy~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~acopy~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IdentifierExpression[~SIZE~0,GLOBAL],IdentifierExpression[~i~0,]],IntegerLiteral[1]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~acopy~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~acopy~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 10:28:11,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:28:11,503 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 10:28:11,521 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-tiling/tcpy.c[395,408] left hand side expression in assignment: lhs: VariableLHS[~SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~acopy~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~acopy~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IdentifierExpression[~SIZE~0,GLOBAL],IdentifierExpression[~i~0,]],IntegerLiteral[1]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~acopy~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~acopy~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 10:28:11,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:28:11,568 INFO L208 MainTranslator]: Completed translation [2021-01-06 10:28:11,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11 WrapperNode [2021-01-06 10:28:11,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 10:28:11,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 10:28:11,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 10:28:11,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 10:28:11,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 10:28:11,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 10:28:11,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 10:28:11,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 10:28:11,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (1/1) ... [2021-01-06 10:28:11,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 10:28:11,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 10:28:11,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 10:28:11,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 10:28:11,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (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 10:28:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 10:28:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 10:28:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 10:28:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 10:28:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 10:28:11,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 10:28:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 10:28:12,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 10:28:12,210 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-01-06 10:28:12,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:28:12 BoogieIcfgContainer [2021-01-06 10:28:12,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 10:28:12,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 10:28:12,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 10:28:12,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 10:28:12,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 10:28:11" (1/3) ... [2021-01-06 10:28:12,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb4ed06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:28:12, skipping insertion in model container [2021-01-06 10:28:12,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:28:11" (2/3) ... [2021-01-06 10:28:12,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb4ed06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:28:12, skipping insertion in model container [2021-01-06 10:28:12,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:28:12" (3/3) ... [2021-01-06 10:28:12,225 INFO L111 eAbstractionObserver]: Analyzing ICFG tcpy.c [2021-01-06 10:28:12,237 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 10:28:12,246 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 10:28:12,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 10:28:12,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 10:28:12,406 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 10:28:12,406 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 10:28:12,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 10:28:12,406 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 10:28:12,406 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 10:28:12,407 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 10:28:12,407 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 10:28:12,431 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-01-06 10:28:12,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 10:28:12,439 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:12,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:12,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:12,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1608152958, now seen corresponding path program 1 times [2021-01-06 10:28:12,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:12,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914386129] [2021-01-06 10:28:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:12,763 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 10:28:12,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914386129] [2021-01-06 10:28:12,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:28:12,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 10:28:12,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073589955] [2021-01-06 10:28:12,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 10:28:12,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:12,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 10:28:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:28:12,802 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-01-06 10:28:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:12,826 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2021-01-06 10:28:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 10:28:12,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2021-01-06 10:28:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:12,841 INFO L225 Difference]: With dead ends: 37 [2021-01-06 10:28:12,841 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 10:28:12,845 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 10:28:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 10:28:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-01-06 10:28:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 10:28:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-01-06 10:28:12,900 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-01-06 10:28:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:12,902 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-01-06 10:28:12,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 10:28:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-01-06 10:28:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 10:28:12,903 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:12,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:12,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 10:28:12,904 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:12,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1873320706, now seen corresponding path program 1 times [2021-01-06 10:28:12,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:12,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619707968] [2021-01-06 10:28:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:13,079 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 10:28:13,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619707968] [2021-01-06 10:28:13,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:28:13,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:28:13,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624321173] [2021-01-06 10:28:13,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 10:28:13,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 10:28:13,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:28:13,090 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2021-01-06 10:28:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:13,216 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-01-06 10:28:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 10:28:13,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-01-06 10:28:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:13,220 INFO L225 Difference]: With dead ends: 31 [2021-01-06 10:28:13,221 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 10:28:13,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:28:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 10:28:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-01-06 10:28:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-06 10:28:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-01-06 10:28:13,239 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2021-01-06 10:28:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:13,240 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-01-06 10:28:13,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 10:28:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-01-06 10:28:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 10:28:13,243 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:13,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:13,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 10:28:13,247 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:13,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:13,250 INFO L82 PathProgramCache]: Analyzing trace with hash -270521828, now seen corresponding path program 1 times [2021-01-06 10:28:13,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:13,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912607470] [2021-01-06 10:28:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:28:13,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912607470] [2021-01-06 10:28:13,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284216847] [2021-01-06 10:28:13,378 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 10:28:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:13,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 10:28:13,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:28:13,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:13,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-01-06 10:28:13,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151446648] [2021-01-06 10:28:13,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 10:28:13,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:13,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 10:28:13,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 10:28:13,668 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2021-01-06 10:28:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:13,789 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-01-06 10:28:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:28:13,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 10:28:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:13,801 INFO L225 Difference]: With dead ends: 33 [2021-01-06 10:28:13,801 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 10:28:13,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 10:28:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 10:28:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-01-06 10:28:13,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 10:28:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-01-06 10:28:13,816 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2021-01-06 10:28:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:13,818 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-01-06 10:28:13,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 10:28:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-01-06 10:28:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 10:28:13,820 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:13,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:14,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 10:28:14,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:14,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1874059334, now seen corresponding path program 2 times [2021-01-06 10:28:14,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:14,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56790283] [2021-01-06 10:28:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:28:14,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56790283] [2021-01-06 10:28:14,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:28:14,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 10:28:14,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8007221] [2021-01-06 10:28:14,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:28:14,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:14,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:28:14,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:28:14,252 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2021-01-06 10:28:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:14,317 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-01-06 10:28:14,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:28:14,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-06 10:28:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:14,319 INFO L225 Difference]: With dead ends: 35 [2021-01-06 10:28:14,319 INFO L226 Difference]: Without dead ends: 28 [2021-01-06 10:28:14,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:28:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-06 10:28:14,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2021-01-06 10:28:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 10:28:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-01-06 10:28:14,327 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2021-01-06 10:28:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:14,327 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-01-06 10:28:14,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:28:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-01-06 10:28:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 10:28:14,329 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:14,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:14,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 10:28:14,329 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:14,330 INFO L82 PathProgramCache]: Analyzing trace with hash 265660728, now seen corresponding path program 1 times [2021-01-06 10:28:14,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:14,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139112851] [2021-01-06 10:28:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:28:14,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139112851] [2021-01-06 10:28:14,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493695314] [2021-01-06 10:28:14,685 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 10:28:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:14,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 10:28:14,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:14,830 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:28:14,834 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:14,838 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:28:14,839 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:28:14,839 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2021-01-06 10:28:15,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:28:15,033 INFO L348 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-01-06 10:28:15,034 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 39 [2021-01-06 10:28:15,037 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:15,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:28:15,053 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 10:28:15,053 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:37 [2021-01-06 10:28:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:28:17,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:17,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-01-06 10:28:17,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639031440] [2021-01-06 10:28:17,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 10:28:17,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:17,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 10:28:17,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=137, Unknown=3, NotChecked=0, Total=182 [2021-01-06 10:28:17,289 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 14 states. [2021-01-06 10:28:18,762 WARN L197 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-01-06 10:28:20,596 WARN L197 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-01-06 10:28:21,961 WARN L197 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2021-01-06 10:28:23,780 WARN L197 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-01-06 10:28:25,890 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-01-06 10:28:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:25,902 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-01-06 10:28:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 10:28:25,903 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2021-01-06 10:28:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:25,904 INFO L225 Difference]: With dead ends: 29 [2021-01-06 10:28:25,904 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 10:28:25,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=125, Invalid=292, Unknown=3, NotChecked=0, Total=420 [2021-01-06 10:28:25,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 10:28:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-01-06 10:28:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 10:28:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-01-06 10:28:25,912 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2021-01-06 10:28:25,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:25,912 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-01-06 10:28:25,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 10:28:25,912 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-01-06 10:28:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 10:28:25,913 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:25,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:26,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:28:26,115 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:26,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1994055598, now seen corresponding path program 1 times [2021-01-06 10:28:26,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:26,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222219899] [2021-01-06 10:28:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:28:26,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222219899] [2021-01-06 10:28:26,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737745758] [2021-01-06 10:28:26,775 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 10:28:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:26,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 10:28:26,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:26,875 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:28:26,878 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:26,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:28:26,886 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:28:26,886 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 10:28:27,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:28:27,234 INFO L348 Elim1Store]: treesize reduction 31, result has 45.6 percent of original size [2021-01-06 10:28:27,242 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 52 [2021-01-06 10:28:27,247 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:27,275 INFO L625 ElimStorePlain]: treesize reduction 23, result has 65.2 percent of original size [2021-01-06 10:28:27,280 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 10:28:27,281 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:43 [2021-01-06 10:28:27,604 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:27,620 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:27,631 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:27,644 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:28:27,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:27,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-01-06 10:28:27,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085208724] [2021-01-06 10:28:27,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 10:28:27,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:27,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 10:28:27,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-01-06 10:28:27,693 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 22 states. [2021-01-06 10:28:29,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:29,244 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2021-01-06 10:28:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 10:28:29,245 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2021-01-06 10:28:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:29,246 INFO L225 Difference]: With dead ends: 59 [2021-01-06 10:28:29,246 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 10:28:29,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 10:28:29,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 10:28:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2021-01-06 10:28:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-06 10:28:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-01-06 10:28:29,257 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 22 [2021-01-06 10:28:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:29,258 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-01-06 10:28:29,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 10:28:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-01-06 10:28:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 10:28:29,259 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:29,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:29,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:28:29,475 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:29,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2092848972, now seen corresponding path program 2 times [2021-01-06 10:28:29,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:29,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179594590] [2021-01-06 10:28:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 10:28:29,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179594590] [2021-01-06 10:28:29,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081512402] [2021-01-06 10:28:29,766 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 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 10:28:29,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:28:29,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:28:29,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 10:28:29,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 10:28:30,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:30,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-01-06 10:28:30,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548104794] [2021-01-06 10:28:30,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 10:28:30,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:30,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 10:28:30,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-01-06 10:28:30,040 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 14 states. [2021-01-06 10:28:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:30,483 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-01-06 10:28:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 10:28:30,487 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2021-01-06 10:28:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:30,488 INFO L225 Difference]: With dead ends: 67 [2021-01-06 10:28:30,489 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 10:28:30,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-01-06 10:28:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 10:28:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 38. [2021-01-06 10:28:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-01-06 10:28:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-01-06 10:28:30,502 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 24 [2021-01-06 10:28:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:30,502 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-01-06 10:28:30,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 10:28:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-01-06 10:28:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 10:28:30,503 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:30,504 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:30,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:28:30,718 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:30,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:30,720 INFO L82 PathProgramCache]: Analyzing trace with hash -757863644, now seen corresponding path program 3 times [2021-01-06 10:28:30,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:30,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567718780] [2021-01-06 10:28:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 10:28:30,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567718780] [2021-01-06 10:28:30,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716559021] [2021-01-06 10:28:30,818 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 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 10:28:30,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 10:28:30,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:28:30,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 10:28:30,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 10:28:31,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:31,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-01-06 10:28:31,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821196556] [2021-01-06 10:28:31,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 10:28:31,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:31,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 10:28:31,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-01-06 10:28:31,009 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 13 states. [2021-01-06 10:28:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:31,207 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-01-06 10:28:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 10:28:31,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2021-01-06 10:28:31,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:31,209 INFO L225 Difference]: With dead ends: 68 [2021-01-06 10:28:31,209 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 10:28:31,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-01-06 10:28:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 10:28:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 27. [2021-01-06 10:28:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 10:28:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-01-06 10:28:31,217 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 26 [2021-01-06 10:28:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:31,217 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-01-06 10:28:31,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 10:28:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-01-06 10:28:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 10:28:31,218 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:31,218 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:31,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:28:31,432 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash -980493622, now seen corresponding path program 4 times [2021-01-06 10:28:31,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:31,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951667501] [2021-01-06 10:28:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 10:28:31,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951667501] [2021-01-06 10:28:31,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393766035] [2021-01-06 10:28:31,810 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 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 10:28:31,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:28:31,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:28:31,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 10:28:31,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 10:28:32,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:32,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-01-06 10:28:32,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282450379] [2021-01-06 10:28:32,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 10:28:32,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:32,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 10:28:32,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-01-06 10:28:32,113 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 18 states. [2021-01-06 10:28:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:32,427 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-01-06 10:28:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 10:28:32,428 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2021-01-06 10:28:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:32,428 INFO L225 Difference]: With dead ends: 47 [2021-01-06 10:28:32,429 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 10:28:32,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-01-06 10:28:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 10:28:32,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-01-06 10:28:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-06 10:28:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-01-06 10:28:32,436 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2021-01-06 10:28:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:32,436 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-01-06 10:28:32,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 10:28:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-01-06 10:28:32,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 10:28:32,437 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:32,437 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:32,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:28:32,650 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:32,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:32,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1215212696, now seen corresponding path program 5 times [2021-01-06 10:28:32,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:32,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635971880] [2021-01-06 10:28:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-06 10:28:32,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635971880] [2021-01-06 10:28:32,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018513134] [2021-01-06 10:28:32,983 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 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 10:28:33,165 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-06 10:28:33,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:28:33,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 10:28:33,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:33,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:33,516 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-01-06 10:28:33,517 INFO L348 Elim1Store]: treesize reduction 298, result has 30.0 percent of original size [2021-01-06 10:28:33,518 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 184 [2021-01-06 10:28:33,523 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-06 10:28:33,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,527 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,528 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:33,530 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,533 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,535 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,536 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,539 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,542 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:33,544 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,545 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,546 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,548 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,551 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,552 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,555 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,558 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:33,560 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:28:33,561 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,562 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,564 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,565 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,566 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,568 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:33,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,575 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,577 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,578 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,580 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:33,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:33,890 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-01-06 10:28:33,892 INFO L348 Elim1Store]: treesize reduction 298, result has 30.0 percent of original size [2021-01-06 10:28:33,892 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 184 [2021-01-06 10:28:33,898 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,899 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,900 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,902 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,905 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-06 10:28:33,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:33,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,920 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,922 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,926 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:33,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:33,931 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,935 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:33,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:33,939 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:33,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:33,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,947 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:33,965 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:33,966 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:33,967 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:33,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,971 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,972 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:33,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,982 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:33,985 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:33,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:34,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:34,269 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-01-06 10:28:34,270 INFO L348 Elim1Store]: treesize reduction 298, result has 30.0 percent of original size [2021-01-06 10:28:34,271 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 184 [2021-01-06 10:28:34,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,278 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,281 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,283 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,286 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:34,289 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,291 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,291 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,293 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,296 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,297 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,299 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,301 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,302 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,304 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,305 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,307 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,309 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,310 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2021-01-06 10:28:34,312 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,314 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,318 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,320 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,324 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,326 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2021-01-06 10:28:34,327 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,332 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,333 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,338 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,338 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,340 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,342 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,344 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,345 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-06 10:28:34,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,347 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,353 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,357 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,358 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2021-01-06 10:28:34,360 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,361 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,366 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,375 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,382 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,382 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,386 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:34,387 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,389 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,390 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,392 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,393 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,396 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2021-01-06 10:28:34,397 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,403 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,405 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,409 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,410 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2021-01-06 10:28:34,412 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,413 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,422 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,423 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,424 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:34,427 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,429 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2021-01-06 10:28:34,430 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,436 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,437 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,441 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,443 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-06 10:28:34,444 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,446 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,452 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:34,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:34,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:34,726 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-01-06 10:28:34,728 INFO L348 Elim1Store]: treesize reduction 298, result has 30.0 percent of original size [2021-01-06 10:28:34,728 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 184 [2021-01-06 10:28:34,732 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,733 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,734 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:34,739 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,740 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,741 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-06 10:28:34,742 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,743 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,744 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,745 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,748 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,750 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,752 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,755 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,757 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,760 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,767 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,768 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:34,770 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,771 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,773 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:34,775 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,778 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,781 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,783 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,787 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,789 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,793 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,794 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,796 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2021-01-06 10:28:34,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,802 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,805 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:34,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,814 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,819 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,821 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,823 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,827 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,832 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,834 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:34,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,837 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:34,839 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:34,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:34,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:34,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:34,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:35,164 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2021-01-06 10:28:35,165 INFO L348 Elim1Store]: treesize reduction 242, result has 34.6 percent of original size [2021-01-06 10:28:35,166 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 184 [2021-01-06 10:28:35,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,173 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,178 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,178 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,180 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,181 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,182 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:28:35,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,184 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,186 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,187 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,187 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,189 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,191 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:35,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,193 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,198 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,199 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,201 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:28:35,202 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,202 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,207 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,208 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,209 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:35,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:35,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:35,606 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-01-06 10:28:35,606 INFO L348 Elim1Store]: treesize reduction 298, result has 30.0 percent of original size [2021-01-06 10:28:35,608 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 184 [2021-01-06 10:28:35,617 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,618 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,619 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,620 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,622 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,624 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,625 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,626 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,628 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,629 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,630 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,631 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,634 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,635 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,637 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,638 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-06 10:28:35,639 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,640 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,642 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,643 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,647 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,649 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,651 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,652 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,653 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,655 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,656 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,657 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,659 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-06 10:28:35,665 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,666 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,667 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,669 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,670 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,672 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,673 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,676 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,685 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,687 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,691 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,693 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,694 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,696 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,698 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,699 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,699 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,701 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,702 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,703 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,706 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,707 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:35,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,710 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,713 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,714 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,715 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,717 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,719 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,721 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,723 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:35,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,727 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,729 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,731 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,732 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,733 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:35,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,740 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:35,744 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,747 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,751 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,753 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,754 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,756 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,757 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,760 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,761 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,768 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,770 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,771 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,776 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,777 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,778 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,779 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,781 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,782 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,783 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,786 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,787 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,789 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,790 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,793 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,794 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,798 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,799 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,801 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,808 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,813 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,815 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,817 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,819 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,820 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,821 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,823 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,827 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,832 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,834 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,844 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,845 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,846 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,848 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,850 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,851 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,852 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,854 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,855 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,856 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,858 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,858 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,859 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,861 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,862 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,862 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,864 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,866 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,867 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,868 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,869 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,872 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,873 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,879 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,881 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,886 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,887 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,888 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,889 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,892 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,894 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,896 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,898 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,900 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,904 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,905 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,911 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,912 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:35,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,918 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,921 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,923 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,926 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,927 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,928 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,932 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,933 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,964 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,965 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,966 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,967 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,969 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,972 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,975 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,982 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:35,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,987 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,988 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:35,990 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,991 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,992 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:35,994 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:35,996 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:35,999 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,001 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,003 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:36,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:36,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:36,198 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-01-06 10:28:36,199 INFO L348 Elim1Store]: treesize reduction 298, result has 30.0 percent of original size [2021-01-06 10:28:36,199 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 184 [2021-01-06 10:28:36,210 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,212 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,213 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-06 10:28:36,214 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-06 10:28:36,215 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,217 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-06 10:28:36,218 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:28:36,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:36,221 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,222 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,222 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,224 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,225 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,227 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,229 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:36,230 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,231 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,231 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:28:36,233 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-06 10:28:36,234 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,235 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-06 10:28:36,236 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-06 10:28:36,238 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,239 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,239 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,240 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,242 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,243 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,244 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:36,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:36,441 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-01-06 10:28:36,442 INFO L348 Elim1Store]: treesize reduction 298, result has 30.0 percent of original size [2021-01-06 10:28:36,443 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 184 [2021-01-06 10:28:36,448 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:36,450 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:36,451 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,451 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,455 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,456 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,456 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,458 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,459 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,460 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,461 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-06 10:28:36,462 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:36,463 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,464 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,466 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:28:36,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,468 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,470 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:36,471 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,473 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,473 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,474 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,476 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,477 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-06 10:28:36,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:36,479 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,480 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:28:36,482 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,482 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,484 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,486 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,487 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-06 10:28:36,488 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-06 10:28:36,491 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:28:36,492 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,492 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,494 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,496 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,496 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:28:36,497 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:36,499 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,501 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:28:36,503 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,503 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-06 10:28:36,504 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:28:36,506 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,507 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:36,508 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:36,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:28:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-01-06 10:28:36,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:36,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-01-06 10:28:36,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596212096] [2021-01-06 10:28:36,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 10:28:36,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 10:28:36,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=219, Unknown=16, NotChecked=0, Total=306 [2021-01-06 10:28:36,626 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 18 states. [2021-01-06 10:28:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:37,466 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-01-06 10:28:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 10:28:37,467 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 28 [2021-01-06 10:28:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:37,468 INFO L225 Difference]: With dead ends: 39 [2021-01-06 10:28:37,468 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 10:28:37,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=176, Invalid=510, Unknown=16, NotChecked=0, Total=702 [2021-01-06 10:28:37,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 10:28:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2021-01-06 10:28:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 10:28:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-01-06 10:28:37,484 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2021-01-06 10:28:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:37,485 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-01-06 10:28:37,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 10:28:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-01-06 10:28:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 10:28:37,489 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:37,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:37,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 10:28:37,691 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash 659943902, now seen corresponding path program 6 times [2021-01-06 10:28:37,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:37,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892920883] [2021-01-06 10:28:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:38,723 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 29 [2021-01-06 10:28:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:28:39,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892920883] [2021-01-06 10:28:39,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237222541] [2021-01-06 10:28:39,512 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 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 10:28:39,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-06 10:28:39,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:28:39,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-06 10:28:39,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:39,648 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:28:39,650 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:39,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:28:39,658 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:28:39,659 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 10:28:40,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:28:40,285 INFO L348 Elim1Store]: treesize reduction 26, result has 58.7 percent of original size [2021-01-06 10:28:40,286 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 67 [2021-01-06 10:28:40,289 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:40,319 INFO L625 ElimStorePlain]: treesize reduction 25, result has 65.3 percent of original size [2021-01-06 10:28:40,321 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 10:28:40,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:69, output treesize:47 [2021-01-06 10:28:40,784 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:40,788 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:28:40,790 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:28:40,795 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:28:40,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:40,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2021-01-06 10:28:40,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522857288] [2021-01-06 10:28:40,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-06 10:28:40,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:40,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-06 10:28:40,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 10:28:40,870 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 34 states. [2021-01-06 10:28:42,566 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2021-01-06 10:28:43,293 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2021-01-06 10:28:43,710 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2021-01-06 10:28:44,543 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2021-01-06 10:28:44,761 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2021-01-06 10:28:44,969 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2021-01-06 10:28:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:44,984 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2021-01-06 10:28:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-06 10:28:44,985 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 32 [2021-01-06 10:28:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:44,985 INFO L225 Difference]: With dead ends: 84 [2021-01-06 10:28:44,985 INFO L226 Difference]: Without dead ends: 69 [2021-01-06 10:28:44,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=529, Invalid=2893, Unknown=0, NotChecked=0, Total=3422 [2021-01-06 10:28:44,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-06 10:28:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 48. [2021-01-06 10:28:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 10:28:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-01-06 10:28:45,001 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 32 [2021-01-06 10:28:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:45,002 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-01-06 10:28:45,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-06 10:28:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-01-06 10:28:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 10:28:45,003 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:45,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:45,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 10:28:45,218 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1581843460, now seen corresponding path program 7 times [2021-01-06 10:28:45,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:45,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204132209] [2021-01-06 10:28:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 10:28:45,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204132209] [2021-01-06 10:28:45,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136521568] [2021-01-06 10:28:45,628 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 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 10:28:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:45,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 10:28:45,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 10:28:46,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:46,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-01-06 10:28:46,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972590434] [2021-01-06 10:28:46,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 10:28:46,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:46,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 10:28:46,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-01-06 10:28:46,046 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 21 states. [2021-01-06 10:28:46,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:46,792 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2021-01-06 10:28:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 10:28:46,793 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 34 [2021-01-06 10:28:46,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:46,794 INFO L225 Difference]: With dead ends: 102 [2021-01-06 10:28:46,794 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 10:28:46,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2021-01-06 10:28:46,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 10:28:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 50. [2021-01-06 10:28:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 10:28:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-01-06 10:28:46,810 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 34 [2021-01-06 10:28:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:46,811 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-01-06 10:28:46,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 10:28:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-01-06 10:28:46,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 10:28:46,812 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:46,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:47,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:28:47,026 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:47,027 INFO L82 PathProgramCache]: Analyzing trace with hash -837130924, now seen corresponding path program 8 times [2021-01-06 10:28:47,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:47,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315150285] [2021-01-06 10:28:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:47,615 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 33 [2021-01-06 10:28:47,771 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-01-06 10:28:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:28:48,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315150285] [2021-01-06 10:28:48,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137478714] [2021-01-06 10:28:48,220 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 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 10:28:48,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:28:48,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:28:48,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-06 10:28:48,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:48,346 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:28:48,349 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:48,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:28:48,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:28:48,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 10:28:48,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:28:48,731 INFO L348 Elim1Store]: treesize reduction 36, result has 57.1 percent of original size [2021-01-06 10:28:48,732 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 85 [2021-01-06 10:28:48,736 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:48,777 INFO L625 ElimStorePlain]: treesize reduction 34, result has 64.6 percent of original size [2021-01-06 10:28:48,779 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:28:48,779 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:90, output treesize:62 [2021-01-06 10:28:48,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:28:49,209 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-01-06 10:28:49,211 INFO L348 Elim1Store]: treesize reduction 126, result has 71.2 percent of original size [2021-01-06 10:28:49,212 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 381 [2021-01-06 10:28:49,221 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:49,341 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2021-01-06 10:28:49,342 INFO L625 ElimStorePlain]: treesize reduction 311, result has 26.7 percent of original size [2021-01-06 10:28:49,344 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 10:28:49,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:141, output treesize:113 [2021-01-06 10:28:50,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:50,407 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:28:50,410 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:28:50,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 14 disjuncts [2021-01-06 10:28:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:28:50,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:28:50,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 36 [2021-01-06 10:28:50,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807346141] [2021-01-06 10:28:50,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-06 10:28:50,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:28:50,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-06 10:28:50,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1102, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 10:28:50,508 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 36 states. [2021-01-06 10:28:53,302 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-01-06 10:28:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:28:54,776 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2021-01-06 10:28:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-06 10:28:54,777 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2021-01-06 10:28:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:28:54,778 INFO L225 Difference]: With dead ends: 90 [2021-01-06 10:28:54,779 INFO L226 Difference]: Without dead ends: 88 [2021-01-06 10:28:54,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=592, Invalid=3568, Unknown=0, NotChecked=0, Total=4160 [2021-01-06 10:28:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-06 10:28:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 54. [2021-01-06 10:28:54,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-06 10:28:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-01-06 10:28:54,793 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 36 [2021-01-06 10:28:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:28:54,793 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-01-06 10:28:54,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-06 10:28:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-01-06 10:28:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 10:28:54,795 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:28:54,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:28:55,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:28:55,010 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:28:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:28:55,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1984402950, now seen corresponding path program 9 times [2021-01-06 10:28:55,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:28:55,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657790300] [2021-01-06 10:28:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:28:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:28:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 10:28:55,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657790300] [2021-01-06 10:28:55,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970764367] [2021-01-06 10:28:55,483 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 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 10:28:55,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 10:28:55,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:28:55,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 10:28:55,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:28:55,637 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:28:55,641 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:55,648 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:28:55,650 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:28:55,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 10:28:55,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:28:55,833 INFO L348 Elim1Store]: treesize reduction 35, result has 44.4 percent of original size [2021-01-06 10:28:55,834 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 58 [2021-01-06 10:28:55,836 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:28:55,868 INFO L625 ElimStorePlain]: treesize reduction 25, result has 65.3 percent of original size [2021-01-06 10:28:55,869 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 10:28:55,870 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:69, output treesize:47 [2021-01-06 10:28:56,922 WARN L197 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 29 [2021-01-06 10:28:58,022 WARN L197 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 31 [2021-01-06 10:28:59,624 WARN L197 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 32 [2021-01-06 10:29:00,675 WARN L197 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2021-01-06 10:29:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-01-06 10:29:00,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:29:00,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-01-06 10:29:00,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760158745] [2021-01-06 10:29:00,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 10:29:00,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:29:00,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 10:29:00,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-01-06 10:29:00,728 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 23 states. [2021-01-06 10:29:03,261 WARN L197 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-01-06 10:29:04,538 WARN L197 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2021-01-06 10:29:05,287 WARN L197 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-01-06 10:29:07,427 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-01-06 10:29:08,184 WARN L197 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-01-06 10:29:10,453 WARN L197 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-01-06 10:29:11,736 WARN L197 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 38 [2021-01-06 10:29:13,071 WARN L197 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 39 [2021-01-06 10:29:14,853 WARN L197 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-01-06 10:29:17,392 WARN L197 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2021-01-06 10:29:19,365 WARN L197 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-01-06 10:29:21,374 WARN L197 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2021-01-06 10:29:24,029 WARN L197 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2021-01-06 10:29:26,084 WARN L197 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-01-06 10:29:27,088 WARN L197 SmtUtils]: Spent 949.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-01-06 10:29:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:29:27,118 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2021-01-06 10:29:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-06 10:29:27,119 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 36 [2021-01-06 10:29:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:29:27,121 INFO L225 Difference]: With dead ends: 131 [2021-01-06 10:29:27,121 INFO L226 Difference]: Without dead ends: 108 [2021-01-06 10:29:27,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=510, Invalid=1940, Unknown=0, NotChecked=0, Total=2450 [2021-01-06 10:29:27,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-01-06 10:29:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 56. [2021-01-06 10:29:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 10:29:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-01-06 10:29:27,146 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 36 [2021-01-06 10:29:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:29:27,146 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-01-06 10:29:27,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 10:29:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-01-06 10:29:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 10:29:27,148 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:29:27,148 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:29:27,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 10:29:27,355 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:29:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:29:27,356 INFO L82 PathProgramCache]: Analyzing trace with hash -840159798, now seen corresponding path program 10 times [2021-01-06 10:29:27,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:29:27,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319009584] [2021-01-06 10:29:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:29:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:29:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:29:27,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319009584] [2021-01-06 10:29:27,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944361181] [2021-01-06 10:29:27,497 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 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 10:29:27,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:29:27,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:29:27,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 10:29:27,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:29:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:29:27,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:29:27,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2021-01-06 10:29:27,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762440524] [2021-01-06 10:29:27,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 10:29:27,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:29:27,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 10:29:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-01-06 10:29:27,716 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 19 states. [2021-01-06 10:29:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:29:27,971 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-01-06 10:29:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 10:29:27,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2021-01-06 10:29:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:29:27,973 INFO L225 Difference]: With dead ends: 96 [2021-01-06 10:29:27,973 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 10:29:27,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2021-01-06 10:29:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 10:29:27,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2021-01-06 10:29:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 10:29:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-01-06 10:29:27,983 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2021-01-06 10:29:27,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:29:27,984 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-01-06 10:29:27,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 10:29:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-01-06 10:29:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 10:29:27,984 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:29:27,984 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:29:28,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 10:29:28,199 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:29:28,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:29:28,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1640463246, now seen corresponding path program 11 times [2021-01-06 10:29:28,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:29:28,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180832594] [2021-01-06 10:29:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:29:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:29:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:29:29,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180832594] [2021-01-06 10:29:29,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495973743] [2021-01-06 10:29:29,891 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 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 10:29:30,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-06 10:29:30,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:29:30,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-06 10:29:30,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:29:30,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:29:30,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:29:30,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:29:30,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 10:29:30,938 INFO L348 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-01-06 10:29:30,939 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 53 [2021-01-06 10:29:30,940 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:29:30,959 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:29:30,963 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:29:30,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:92, output treesize:64 [2021-01-06 10:29:32,009 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:29:32,011 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:29:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:29:32,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:29:32,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 43 [2021-01-06 10:29:32,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006236410] [2021-01-06 10:29:32,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-06 10:29:32,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:29:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-06 10:29:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2021-01-06 10:29:32,089 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 43 states. [2021-01-06 10:29:34,037 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2021-01-06 10:29:34,313 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2021-01-06 10:29:34,627 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2021-01-06 10:29:34,982 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2021-01-06 10:29:35,337 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2021-01-06 10:29:37,070 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2021-01-06 10:29:37,853 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2021-01-06 10:29:38,205 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2021-01-06 10:29:38,777 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-01-06 10:29:39,012 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2021-01-06 10:29:39,672 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 51 [2021-01-06 10:29:40,173 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2021-01-06 10:29:40,433 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2021-01-06 10:29:40,650 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2021-01-06 10:29:41,064 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2021-01-06 10:29:41,463 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2021-01-06 10:29:41,899 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2021-01-06 10:29:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:29:41,923 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2021-01-06 10:29:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-01-06 10:29:41,923 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 42 [2021-01-06 10:29:41,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:29:41,925 INFO L225 Difference]: With dead ends: 128 [2021-01-06 10:29:41,925 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 10:29:41,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2388 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=934, Invalid=8572, Unknown=0, NotChecked=0, Total=9506 [2021-01-06 10:29:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 10:29:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 59. [2021-01-06 10:29:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 10:29:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-01-06 10:29:41,942 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 42 [2021-01-06 10:29:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:29:41,943 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-01-06 10:29:41,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-06 10:29:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-01-06 10:29:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 10:29:41,944 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:29:41,944 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:29:42,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 10:29:42,158 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:29:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:29:42,159 INFO L82 PathProgramCache]: Analyzing trace with hash -61892860, now seen corresponding path program 12 times [2021-01-06 10:29:42,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:29:42,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303920211] [2021-01-06 10:29:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:29:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:29:43,407 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 32 [2021-01-06 10:29:43,609 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2021-01-06 10:29:43,794 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 46 [2021-01-06 10:29:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:29:44,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303920211] [2021-01-06 10:29:44,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218515288] [2021-01-06 10:29:44,737 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 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 10:29:44,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 10:29:44,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:29:44,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 53 conjunts are in the unsatisfiable core [2021-01-06 10:29:44,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:29:44,923 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:29:44,925 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:29:44,930 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:29:44,931 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:29:44,932 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 10:29:45,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:29:45,617 INFO L348 Elim1Store]: treesize reduction 48, result has 42.9 percent of original size [2021-01-06 10:29:45,617 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 73 [2021-01-06 10:29:45,619 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:29:45,659 INFO L625 ElimStorePlain]: treesize reduction 34, result has 64.6 percent of original size [2021-01-06 10:29:45,662 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:29:45,663 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:90, output treesize:62 [2021-01-06 10:29:45,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:29:46,098 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2021-01-06 10:29:46,099 INFO L348 Elim1Store]: treesize reduction 254, result has 42.0 percent of original size [2021-01-06 10:29:46,100 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 253 [2021-01-06 10:29:46,103 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:29:46,185 INFO L625 ElimStorePlain]: treesize reduction 182, result has 37.7 percent of original size [2021-01-06 10:29:46,186 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:29:46,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:141, output treesize:110 [2021-01-06 10:29:46,444 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:29:46,446 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:29:46,448 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:29:46,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:29:46,478 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:29:46,483 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:29:46,489 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 10:29:46,518 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:29:46,523 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:29:46,529 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 10:29:46,542 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:29:46,548 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:29:46,552 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:29:46,558 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2021-01-06 10:29:46,576 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:29:46,581 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:29:46,587 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 10:29:46,646 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:29:46,651 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:29:46,657 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 10:29:47,430 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-01-06 10:29:48,455 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:29:48,458 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:29:48,459 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:29:48,464 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2021-01-06 10:29:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:29:48,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:29:48,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 44 [2021-01-06 10:29:48,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611223594] [2021-01-06 10:29:48,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-01-06 10:29:48,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:29:48,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-01-06 10:29:48,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1743, Unknown=0, NotChecked=0, Total=1892 [2021-01-06 10:29:48,577 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 44 states. [2021-01-06 10:29:51,148 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 74 [2021-01-06 10:29:51,495 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 72 [2021-01-06 10:29:51,957 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2021-01-06 10:29:52,577 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-01-06 10:29:54,444 WARN L197 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-01-06 10:29:54,828 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 77 [2021-01-06 10:29:58,764 WARN L197 SmtUtils]: Spent 3.85 s on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2021-01-06 10:29:59,067 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 76 [2021-01-06 10:30:03,310 WARN L197 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2021-01-06 10:30:07,588 WARN L197 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 97 DAG size of output: 84 [2021-01-06 10:30:07,878 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 76 [2021-01-06 10:30:12,261 WARN L197 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2021-01-06 10:30:12,590 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 74 [2021-01-06 10:30:13,048 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2021-01-06 10:30:13,408 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-01-06 10:30:14,174 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2021-01-06 10:30:14,608 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 92 [2021-01-06 10:30:15,252 WARN L197 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 95 [2021-01-06 10:30:15,929 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2021-01-06 10:30:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:30:16,114 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2021-01-06 10:30:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-01-06 10:30:16,118 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 46 [2021-01-06 10:30:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:30:16,119 INFO L225 Difference]: With dead ends: 123 [2021-01-06 10:30:16,119 INFO L226 Difference]: Without dead ends: 121 [2021-01-06 10:30:16,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2338 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=1070, Invalid=8242, Unknown=0, NotChecked=0, Total=9312 [2021-01-06 10:30:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-01-06 10:30:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 66. [2021-01-06 10:30:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 10:30:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-01-06 10:30:16,141 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 46 [2021-01-06 10:30:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:30:16,142 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-01-06 10:30:16,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2021-01-06 10:30:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-01-06 10:30:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 10:30:16,144 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:30:16,144 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:30:16,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:30:16,359 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:30:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:30:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1781463174, now seen corresponding path program 13 times [2021-01-06 10:30:16,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:30:16,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129429798] [2021-01-06 10:30:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:30:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:30:17,739 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-01-06 10:30:17,982 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2021-01-06 10:30:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 1 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:30:19,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129429798] [2021-01-06 10:30:19,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653926220] [2021-01-06 10:30:19,086 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 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 10:30:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:30:19,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-06 10:30:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:30:19,180 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:30:19,182 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:19,187 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:30:19,188 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:19,188 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-06 10:30:19,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:19,996 INFO L348 Elim1Store]: treesize reduction 36, result has 57.1 percent of original size [2021-01-06 10:30:19,997 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 85 [2021-01-06 10:30:20,001 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:20,037 INFO L625 ElimStorePlain]: treesize reduction 34, result has 63.8 percent of original size [2021-01-06 10:30:20,038 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:20,039 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:88, output treesize:60 [2021-01-06 10:30:20,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:20,513 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2021-01-06 10:30:20,514 INFO L348 Elim1Store]: treesize reduction 105, result has 70.3 percent of original size [2021-01-06 10:30:20,515 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 311 [2021-01-06 10:30:20,521 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:20,623 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-01-06 10:30:20,624 INFO L625 ElimStorePlain]: treesize reduction 254, result has 26.6 percent of original size [2021-01-06 10:30:20,625 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:20,625 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:120, output treesize:92 [2021-01-06 10:30:20,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:21,475 WARN L197 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 93 [2021-01-06 10:30:21,477 INFO L348 Elim1Store]: treesize reduction 399, result has 40.5 percent of original size [2021-01-06 10:30:21,477 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 26 case distinctions, treesize of input 105 treesize of output 354 [2021-01-06 10:30:21,486 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:21,596 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2021-01-06 10:30:21,597 INFO L625 ElimStorePlain]: treesize reduction 293, result has 28.2 percent of original size [2021-01-06 10:30:21,599 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 10:30:21,600 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:137, output treesize:115 [2021-01-06 10:30:22,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:30:22,800 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:30:22,801 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:30:22,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 10:30:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:30:22,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:30:22,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47 [2021-01-06 10:30:22,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867715927] [2021-01-06 10:30:22,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-01-06 10:30:22,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:30:22,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-01-06 10:30:22,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2007, Unknown=0, NotChecked=0, Total=2162 [2021-01-06 10:30:22,919 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 47 states. [2021-01-06 10:30:24,423 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2021-01-06 10:30:24,696 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2021-01-06 10:30:25,288 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 49 [2021-01-06 10:30:25,654 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2021-01-06 10:30:25,953 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 53 [2021-01-06 10:30:26,303 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 55 [2021-01-06 10:30:26,600 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 65 [2021-01-06 10:30:26,817 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2021-01-06 10:30:27,012 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-01-06 10:30:27,436 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 67 [2021-01-06 10:30:27,868 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 57 [2021-01-06 10:30:28,249 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2021-01-06 10:30:28,597 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 64 [2021-01-06 10:30:28,907 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2021-01-06 10:30:29,336 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-01-06 10:30:29,723 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-01-06 10:30:30,035 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-01-06 10:30:30,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:30:30,057 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2021-01-06 10:30:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 10:30:30,058 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 50 [2021-01-06 10:30:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:30:30,058 INFO L225 Difference]: With dead ends: 100 [2021-01-06 10:30:30,058 INFO L226 Difference]: Without dead ends: 58 [2021-01-06 10:30:30,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=628, Invalid=4922, Unknown=0, NotChecked=0, Total=5550 [2021-01-06 10:30:30,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-06 10:30:30,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-01-06 10:30:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 10:30:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-01-06 10:30:30,072 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 50 [2021-01-06 10:30:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:30:30,072 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-01-06 10:30:30,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2021-01-06 10:30:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-01-06 10:30:30,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-06 10:30:30,072 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:30:30,073 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:30:30,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 10:30:30,273 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:30:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:30:30,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1257480672, now seen corresponding path program 14 times [2021-01-06 10:30:30,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:30:30,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546191902] [2021-01-06 10:30:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:30:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:30:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 11 proven. 54 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-06 10:30:31,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546191902] [2021-01-06 10:30:31,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914245430] [2021-01-06 10:30:31,010 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 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 10:30:31,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:30:31,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:30:31,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 10:30:31,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:30:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 49 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-06 10:30:31,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:30:31,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2021-01-06 10:30:31,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119882561] [2021-01-06 10:30:31,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-06 10:30:31,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:30:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-06 10:30:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2021-01-06 10:30:31,587 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 30 states. [2021-01-06 10:30:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:30:32,525 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2021-01-06 10:30:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 10:30:32,526 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 50 [2021-01-06 10:30:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:30:32,527 INFO L225 Difference]: With dead ends: 120 [2021-01-06 10:30:32,527 INFO L226 Difference]: Without dead ends: 97 [2021-01-06 10:30:32,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 10:30:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-06 10:30:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 68. [2021-01-06 10:30:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-06 10:30:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-01-06 10:30:32,544 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 50 [2021-01-06 10:30:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:30:32,544 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-01-06 10:30:32,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-06 10:30:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-01-06 10:30:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 10:30:32,545 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:30:32,545 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:30:32,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:30:32,759 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:30:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:30:32,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1538983448, now seen corresponding path program 15 times [2021-01-06 10:30:32,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:30:32,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918454538] [2021-01-06 10:30:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:30:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:30:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 33 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-01-06 10:30:33,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918454538] [2021-01-06 10:30:33,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187298604] [2021-01-06 10:30:33,249 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 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 10:30:33,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-01-06 10:30:33,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:30:33,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 55 conjunts are in the unsatisfiable core [2021-01-06 10:30:33,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:30:33,416 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:30:33,418 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:33,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:30:33,425 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:33,426 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-06 10:30:33,484 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 10:30:33,485 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:33,496 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:30:33,498 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:33,499 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:11 [2021-01-06 10:30:33,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:33,813 INFO L348 Elim1Store]: treesize reduction 36, result has 57.1 percent of original size [2021-01-06 10:30:33,813 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 85 [2021-01-06 10:30:33,815 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:33,859 INFO L625 ElimStorePlain]: treesize reduction 34, result has 64.6 percent of original size [2021-01-06 10:30:33,860 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:33,860 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:90, output treesize:62 [2021-01-06 10:30:34,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:34,197 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2021-01-06 10:30:34,198 INFO L348 Elim1Store]: treesize reduction 254, result has 42.0 percent of original size [2021-01-06 10:30:34,198 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 253 [2021-01-06 10:30:34,204 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:34,294 INFO L625 ElimStorePlain]: treesize reduction 179, result has 37.6 percent of original size [2021-01-06 10:30:34,295 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:34,296 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:136, output treesize:108 [2021-01-06 10:30:34,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:35,544 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 169 DAG size of output: 136 [2021-01-06 10:30:35,545 INFO L348 Elim1Store]: treesize reduction 236, result has 68.9 percent of original size [2021-01-06 10:30:35,546 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 26 case distinctions, treesize of input 115 treesize of output 613 [2021-01-06 10:30:35,555 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:35,748 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 53 [2021-01-06 10:30:35,749 INFO L625 ElimStorePlain]: treesize reduction 533, result has 19.8 percent of original size [2021-01-06 10:30:35,751 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:35,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:163, output treesize:132 [2021-01-06 10:30:35,966 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:30:36,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:30:36,959 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 10:30:36,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:30:36,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 17 disjuncts [2021-01-06 10:30:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 59 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-01-06 10:30:37,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:30:37,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22] total 35 [2021-01-06 10:30:37,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979672189] [2021-01-06 10:30:37,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-06 10:30:37,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:30:37,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-06 10:30:37,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 10:30:37,067 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 35 states. [2021-01-06 10:30:39,458 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-06 10:30:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:30:40,934 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2021-01-06 10:30:40,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-06 10:30:40,935 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 52 [2021-01-06 10:30:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:30:40,936 INFO L225 Difference]: With dead ends: 109 [2021-01-06 10:30:40,936 INFO L226 Difference]: Without dead ends: 74 [2021-01-06 10:30:40,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=812, Invalid=3610, Unknown=0, NotChecked=0, Total=4422 [2021-01-06 10:30:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-06 10:30:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2021-01-06 10:30:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 10:30:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2021-01-06 10:30:40,949 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 52 [2021-01-06 10:30:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:30:40,949 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2021-01-06 10:30:40,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-06 10:30:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2021-01-06 10:30:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 10:30:40,950 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:30:40,950 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:30:41,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:30:41,151 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:30:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:30:41,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2062965950, now seen corresponding path program 16 times [2021-01-06 10:30:41,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:30:41,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081348571] [2021-01-06 10:30:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:30:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:30:43,043 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 28 [2021-01-06 10:30:43,254 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 29 [2021-01-06 10:30:43,456 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 29 [2021-01-06 10:30:43,664 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 35 [2021-01-06 10:30:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:30:44,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081348571] [2021-01-06 10:30:44,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959271958] [2021-01-06 10:30:44,646 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 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 10:30:44,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:30:44,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:30:44,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-06 10:30:44,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:30:44,749 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:30:44,750 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:44,761 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:30:44,762 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:30:44,762 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-06 10:30:46,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:46,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:46,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:30:46,272 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2021-01-06 10:30:46,274 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:30:46,321 INFO L625 ElimStorePlain]: treesize reduction 5, result has 91.7 percent of original size [2021-01-06 10:30:46,323 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 10:30:46,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:82, output treesize:55 [2021-01-06 10:30:47,230 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:30:47,231 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:30:47,232 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:30:47,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:30:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:30:47,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:30:47,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 51 [2021-01-06 10:30:47,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739813647] [2021-01-06 10:30:47,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-01-06 10:30:47,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:30:47,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-01-06 10:30:47,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2247, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 10:30:47,346 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 51 states. [2021-01-06 10:30:49,567 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-01-06 10:30:49,776 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2021-01-06 10:30:51,320 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2021-01-06 10:30:51,745 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-01-06 10:30:51,982 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2021-01-06 10:30:52,423 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2021-01-06 10:30:52,819 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2021-01-06 10:30:53,023 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2021-01-06 10:30:53,327 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2021-01-06 10:30:53,669 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2021-01-06 10:30:54,033 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2021-01-06 10:30:54,342 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2021-01-06 10:30:54,660 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-01-06 10:30:54,975 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-01-06 10:30:55,271 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-01-06 10:30:55,566 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-01-06 10:30:55,885 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-01-06 10:30:56,209 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-01-06 10:30:56,526 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-01-06 10:30:56,875 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2021-01-06 10:30:56,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:30:56,892 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2021-01-06 10:30:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-06 10:30:56,893 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 52 [2021-01-06 10:30:56,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:30:56,894 INFO L225 Difference]: With dead ends: 131 [2021-01-06 10:30:56,895 INFO L226 Difference]: Without dead ends: 108 [2021-01-06 10:30:56,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=1650, Invalid=7280, Unknown=0, NotChecked=0, Total=8930 [2021-01-06 10:30:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-01-06 10:30:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 72. [2021-01-06 10:30:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-06 10:30:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-01-06 10:30:56,916 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 52 [2021-01-06 10:30:56,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:30:56,917 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-01-06 10:30:56,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2021-01-06 10:30:56,917 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-01-06 10:30:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 10:30:56,918 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:30:56,918 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:30:57,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-06 10:30:57,127 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:30:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:30:57,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1851468764, now seen corresponding path program 17 times [2021-01-06 10:30:57,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:30:57,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039199560] [2021-01-06 10:30:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:30:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:30:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 49 proven. 48 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-06 10:30:57,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039199560] [2021-01-06 10:30:57,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980973575] [2021-01-06 10:30:57,867 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 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 10:30:58,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-06 10:30:58,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:30:58,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 10:30:58,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:30:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 64 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-06 10:30:59,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:30:59,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2021-01-06 10:30:59,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745075085] [2021-01-06 10:30:59,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-06 10:30:59,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:30:59,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-06 10:30:59,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 10:30:59,593 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 33 states. [2021-01-06 10:31:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:31:01,572 INFO L93 Difference]: Finished difference Result 172 states and 179 transitions. [2021-01-06 10:31:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 10:31:01,575 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 54 [2021-01-06 10:31:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:31:01,578 INFO L225 Difference]: With dead ends: 172 [2021-01-06 10:31:01,578 INFO L226 Difference]: Without dead ends: 151 [2021-01-06 10:31:01,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2021-01-06 10:31:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-01-06 10:31:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 74. [2021-01-06 10:31:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 10:31:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-01-06 10:31:01,598 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 54 [2021-01-06 10:31:01,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:31:01,600 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-01-06 10:31:01,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-06 10:31:01,600 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-01-06 10:31:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 10:31:01,603 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:31:01,603 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:31:01,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:31:01,805 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:31:01,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:31:01,806 INFO L82 PathProgramCache]: Analyzing trace with hash 868900916, now seen corresponding path program 18 times [2021-01-06 10:31:01,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:31:01,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653955916] [2021-01-06 10:31:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:31:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:31:03,693 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2021-01-06 10:31:03,911 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 28 [2021-01-06 10:31:04,175 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 30 [2021-01-06 10:31:04,497 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 44 [2021-01-06 10:31:04,778 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2021-01-06 10:31:05,412 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 27 [2021-01-06 10:31:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:31:06,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653955916] [2021-01-06 10:31:06,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271314433] [2021-01-06 10:31:06,221 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 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 10:31:06,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-06 10:31:06,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:31:06,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 73 conjunts are in the unsatisfiable core [2021-01-06 10:31:06,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:31:06,587 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:31:06,589 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:06,603 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:06,604 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:06,604 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-06 10:31:08,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,260 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 53 [2021-01-06 10:31:08,262 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:08,293 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:08,294 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:08,295 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:66 [2021-01-06 10:31:08,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:08,654 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 111 [2021-01-06 10:31:08,657 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:08,701 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:08,702 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:08,703 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:140, output treesize:112 [2021-01-06 10:31:10,786 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:31:10,788 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:31:10,788 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:31:10,790 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2021-01-06 10:31:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:31:10,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:31:10,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2021-01-06 10:31:10,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579615175] [2021-01-06 10:31:10,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-01-06 10:31:10,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:31:10,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-01-06 10:31:10,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2772, Unknown=0, NotChecked=0, Total=3080 [2021-01-06 10:31:10,941 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 56 states. [2021-01-06 10:31:12,721 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-01-06 10:31:13,053 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-06 10:31:14,544 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2021-01-06 10:31:14,817 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 44 [2021-01-06 10:31:15,057 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 47 [2021-01-06 10:31:15,344 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-01-06 10:31:15,615 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-01-06 10:31:15,903 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-01-06 10:31:16,178 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-01-06 10:31:16,736 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2021-01-06 10:31:17,149 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 64 [2021-01-06 10:31:17,601 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 64 [2021-01-06 10:31:17,927 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2021-01-06 10:31:18,213 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2021-01-06 10:31:18,507 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2021-01-06 10:31:18,787 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-01-06 10:31:19,152 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2021-01-06 10:31:19,531 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2021-01-06 10:31:19,891 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 80 [2021-01-06 10:31:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:31:19,919 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2021-01-06 10:31:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-06 10:31:19,921 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2021-01-06 10:31:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:31:19,922 INFO L225 Difference]: With dead ends: 115 [2021-01-06 10:31:19,922 INFO L226 Difference]: Without dead ends: 113 [2021-01-06 10:31:19,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=1053, Invalid=6957, Unknown=0, NotChecked=0, Total=8010 [2021-01-06 10:31:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-01-06 10:31:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78. [2021-01-06 10:31:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 10:31:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-01-06 10:31:19,949 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 56 [2021-01-06 10:31:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:31:19,950 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-01-06 10:31:19,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2021-01-06 10:31:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-01-06 10:31:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 10:31:19,950 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:31:19,951 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:31:20,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-06 10:31:20,165 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:31:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:31:20,166 INFO L82 PathProgramCache]: Analyzing trace with hash 596709082, now seen corresponding path program 19 times [2021-01-06 10:31:20,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:31:20,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672982777] [2021-01-06 10:31:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:31:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:31:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-06 10:31:21,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672982777] [2021-01-06 10:31:21,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237232641] [2021-01-06 10:31:21,143 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 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 10:31:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:31:21,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 10:31:21,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:31:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 25 proven. 81 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-01-06 10:31:22,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:31:22,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2021-01-06 10:31:22,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772418972] [2021-01-06 10:31:22,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-06 10:31:22,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:31:22,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-06 10:31:22,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=993, Unknown=0, NotChecked=0, Total=1260 [2021-01-06 10:31:22,009 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 36 states. [2021-01-06 10:31:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:31:23,513 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2021-01-06 10:31:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 10:31:23,514 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 56 [2021-01-06 10:31:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:31:23,515 INFO L225 Difference]: With dead ends: 145 [2021-01-06 10:31:23,515 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 10:31:23,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=567, Invalid=1785, Unknown=0, NotChecked=0, Total=2352 [2021-01-06 10:31:23,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 10:31:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2021-01-06 10:31:23,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-06 10:31:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2021-01-06 10:31:23,536 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 56 [2021-01-06 10:31:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:31:23,536 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2021-01-06 10:31:23,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-06 10:31:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2021-01-06 10:31:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 10:31:23,537 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:31:23,537 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:31:23,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 10:31:23,739 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:31:23,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:31:23,740 INFO L82 PathProgramCache]: Analyzing trace with hash 731717368, now seen corresponding path program 20 times [2021-01-06 10:31:23,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:31:23,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881511946] [2021-01-06 10:31:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:31:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:31:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-01-06 10:31:24,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881511946] [2021-01-06 10:31:24,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354420791] [2021-01-06 10:31:24,578 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:31:24,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:31:24,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:31:24,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 53 conjunts are in the unsatisfiable core [2021-01-06 10:31:24,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:31:24,698 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:31:24,700 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:24,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:24,710 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:24,710 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 10:31:25,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:25,463 INFO L348 Elim1Store]: treesize reduction 44, result has 43.6 percent of original size [2021-01-06 10:31:25,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 67 [2021-01-06 10:31:25,467 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:25,521 INFO L625 ElimStorePlain]: treesize reduction 32, result has 65.2 percent of original size [2021-01-06 10:31:25,523 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 10:31:25,524 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:88, output treesize:60 [2021-01-06 10:31:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-01-06 10:31:26,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:31:26,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 35 [2021-01-06 10:31:26,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748307604] [2021-01-06 10:31:26,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-06 10:31:26,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:31:26,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-06 10:31:26,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 10:31:26,334 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 35 states. [2021-01-06 10:31:29,103 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-01-06 10:31:29,816 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2021-01-06 10:31:30,008 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-01-06 10:31:30,377 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-01-06 10:31:30,929 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-06 10:31:31,121 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-01-06 10:31:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:31:32,026 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2021-01-06 10:31:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-01-06 10:31:32,027 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 58 [2021-01-06 10:31:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:31:32,029 INFO L225 Difference]: With dead ends: 110 [2021-01-06 10:31:32,029 INFO L226 Difference]: Without dead ends: 108 [2021-01-06 10:31:32,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=638, Invalid=4474, Unknown=0, NotChecked=0, Total=5112 [2021-01-06 10:31:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-01-06 10:31:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 80. [2021-01-06 10:31:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-06 10:31:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2021-01-06 10:31:32,055 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 58 [2021-01-06 10:31:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:31:32,056 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2021-01-06 10:31:32,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-06 10:31:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2021-01-06 10:31:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-01-06 10:31:32,056 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:31:32,057 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:31:32,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:31:32,272 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:31:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:31:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1822181206, now seen corresponding path program 21 times [2021-01-06 10:31:32,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:31:32,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773437366] [2021-01-06 10:31:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:31:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:31:33,293 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2021-01-06 10:31:33,451 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2021-01-06 10:31:33,626 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2021-01-06 10:31:34,198 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 24 [2021-01-06 10:31:34,454 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 29 [2021-01-06 10:31:34,722 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 41 [2021-01-06 10:31:35,040 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2021-01-06 10:31:35,468 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 52 [2021-01-06 10:31:35,695 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2021-01-06 10:31:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:31:37,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773437366] [2021-01-06 10:31:37,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167650458] [2021-01-06 10:31:37,300 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:31:37,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-06 10:31:37,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:31:37,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-06 10:31:37,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:31:37,650 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:31:37,652 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:37,666 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:37,667 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:37,667 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2021-01-06 10:31:37,810 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 10:31:37,811 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:37,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:37,837 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:37,837 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:17 [2021-01-06 10:31:38,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,340 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 53 [2021-01-06 10:31:38,342 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:38,379 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:38,380 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:38,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:96, output treesize:68 [2021-01-06 10:31:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:38,773 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:38,774 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 243 [2021-01-06 10:31:38,778 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:38,902 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-01-06 10:31:38,903 INFO L625 ElimStorePlain]: treesize reduction 144, result has 44.2 percent of original size [2021-01-06 10:31:38,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:38,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:142, output treesize:114 [2021-01-06 10:31:39,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:39,434 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-01-06 10:31:39,435 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:31:39,436 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 23 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 8 case distinctions, treesize of input 141 treesize of output 385 [2021-01-06 10:31:39,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:39,628 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2021-01-06 10:31:39,629 INFO L625 ElimStorePlain]: treesize reduction 248, result has 39.5 percent of original size [2021-01-06 10:31:39,631 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:39,631 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:190, output treesize:162 [2021-01-06 10:31:40,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:31:40,200 INFO L244 Elim1Store]: Index analysis took 149 ms [2021-01-06 10:31:40,204 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 57 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 231 [2021-01-06 10:31:40,207 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:31:40,368 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-01-06 10:31:40,369 INFO L625 ElimStorePlain]: treesize reduction 3, result has 98.6 percent of original size [2021-01-06 10:31:40,371 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:31:40,372 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:243, output treesize:212 [2021-01-06 10:31:40,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:31:41,169 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-01-06 10:31:43,214 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:31:43,217 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:31:43,222 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 10:31:43,224 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 10:31:43,229 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 20 disjuncts [2021-01-06 10:31:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 81 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-01-06 10:31:43,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:31:43,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24] total 52 [2021-01-06 10:31:43,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735732703] [2021-01-06 10:31:43,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-01-06 10:31:43,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:31:43,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-01-06 10:31:43,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2365, Unknown=0, NotChecked=0, Total=2652 [2021-01-06 10:31:43,480 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 52 states. [2021-01-06 10:31:46,509 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2021-01-06 10:31:46,911 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2021-01-06 10:31:48,034 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-01-06 10:31:48,460 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-01-06 10:31:48,756 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2021-01-06 10:31:49,193 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-01-06 10:31:49,659 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-01-06 10:31:50,169 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 74 [2021-01-06 10:31:50,574 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-01-06 10:31:50,876 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-01-06 10:31:51,184 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 66 [2021-01-06 10:31:51,410 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-01-06 10:31:51,742 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 69 [2021-01-06 10:31:52,159 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2021-01-06 10:31:52,623 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2021-01-06 10:31:53,029 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 71 [2021-01-06 10:31:53,295 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-01-06 10:31:53,708 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-01-06 10:31:54,025 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2021-01-06 10:31:54,409 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2021-01-06 10:31:54,829 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 71 [2021-01-06 10:31:55,227 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2021-01-06 10:31:55,670 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-01-06 10:31:56,239 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-01-06 10:31:56,699 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-01-06 10:31:57,114 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 77 [2021-01-06 10:31:58,502 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-01-06 10:31:59,175 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2021-01-06 10:31:59,567 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-01-06 10:32:00,013 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-01-06 10:32:00,212 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-01-06 10:32:00,536 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-01-06 10:32:00,744 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2021-01-06 10:32:00,954 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2021-01-06 10:32:01,145 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2021-01-06 10:32:01,573 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2021-01-06 10:32:01,782 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2021-01-06 10:32:02,125 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-01-06 10:32:02,357 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-01-06 10:32:02,621 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2021-01-06 10:32:03,059 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-01-06 10:32:03,301 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2021-01-06 10:32:03,549 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-01-06 10:32:03,790 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2021-01-06 10:32:04,008 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-01-06 10:32:04,240 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2021-01-06 10:32:04,656 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-01-06 10:32:04,868 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2021-01-06 10:32:05,166 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2021-01-06 10:32:05,416 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2021-01-06 10:32:05,666 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2021-01-06 10:32:05,918 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2021-01-06 10:32:06,181 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2021-01-06 10:32:06,447 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-01-06 10:32:06,698 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2021-01-06 10:32:06,942 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2021-01-06 10:32:07,214 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-01-06 10:32:07,648 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-01-06 10:32:08,023 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-01-06 10:32:08,425 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-01-06 10:32:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:32:08,978 INFO L93 Difference]: Finished difference Result 195 states and 203 transitions. [2021-01-06 10:32:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-01-06 10:32:08,980 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 60 [2021-01-06 10:32:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:32:08,981 INFO L225 Difference]: With dead ends: 195 [2021-01-06 10:32:08,981 INFO L226 Difference]: Without dead ends: 147 [2021-01-06 10:32:08,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7106 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=2764, Invalid=19288, Unknown=0, NotChecked=0, Total=22052 [2021-01-06 10:32:08,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-01-06 10:32:09,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 90. [2021-01-06 10:32:09,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-01-06 10:32:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-01-06 10:32:09,023 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 60 [2021-01-06 10:32:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:32:09,024 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-01-06 10:32:09,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-01-06 10:32:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-01-06 10:32:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 10:32:09,025 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:32:09,025 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:32:09,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-06 10:32:09,239 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:32:09,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:32:09,240 INFO L82 PathProgramCache]: Analyzing trace with hash -764316306, now seen corresponding path program 22 times [2021-01-06 10:32:09,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:32:09,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210758881] [2021-01-06 10:32:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:32:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:32:10,129 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2021-01-06 10:32:10,286 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2021-01-06 10:32:10,431 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-01-06 10:32:10,618 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2021-01-06 10:32:10,769 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2021-01-06 10:32:10,945 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2021-01-06 10:32:11,135 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2021-01-06 10:32:11,295 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2021-01-06 10:32:11,741 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2021-01-06 10:32:11,998 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 28 [2021-01-06 10:32:12,283 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 28 [2021-01-06 10:32:12,565 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2021-01-06 10:32:12,849 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 29 [2021-01-06 10:32:13,122 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2021-01-06 10:32:13,519 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2021-01-06 10:32:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 6 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:32:14,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210758881] [2021-01-06 10:32:14,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712805903] [2021-01-06 10:32:14,680 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:32:14,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:32:14,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:32:14,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 66 conjunts are in the unsatisfiable core [2021-01-06 10:32:14,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:32:14,793 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 10:32:14,796 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:32:14,814 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:32:14,815 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:32:14,815 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17