/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-fpi/brs1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:13:22,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:13:22,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:13:22,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:13:22,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:13:22,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:13:22,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:13:22,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:13:22,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:13:22,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:13:22,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:13:22,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:13:22,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:13:22,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:13:22,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:13:22,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:13:22,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:13:22,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:13:22,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:13:22,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:13:22,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:13:22,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:13:22,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:13:22,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:13:22,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:13:22,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:13:22,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:13:22,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:13:22,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:13:22,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:13:22,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:13:22,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:13:22,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:13:22,630 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:13:22,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:13:22,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:13:22,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:13:22,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:13:22,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:13:22,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:13:22,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:13:22,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:13:22,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:13:22,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:13:22,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:13:22,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:13:22,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:13:22,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:13:22,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:13:22,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:13:22,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:13:22,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:13:22,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:13:22,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:13:22,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:13:23,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:13:23,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:13:23,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:13:23,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:13:23,134 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:13:23,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs1.c [2020-12-23 01:13:23,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f4f201ffb/78302ecf37234384a89f8b888667359a/FLAG6817de490 [2020-12-23 01:13:23,906 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:13:23,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1.c [2020-12-23 01:13:23,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f4f201ffb/78302ecf37234384a89f8b888667359a/FLAG6817de490 [2020-12-23 01:13:23,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f4f201ffb/78302ecf37234384a89f8b888667359a [2020-12-23 01:13:23,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:13:23,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:13:23,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:13:23,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:13:24,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:13:24,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:13:23" (1/1) ... [2020-12-23 01:13:24,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5037b918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24, skipping insertion in model container [2020-12-23 01:13:24,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:13:23" (1/1) ... [2020-12-23 01:13:24,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:13:24,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:13:24,254 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~sum~0,],[IntegerLiteral[0]]] [2020-12-23 01:13:24,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:13:24,290 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:13:24,308 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs1.c[587,600] left hand side expression in assignment: lhs: VariableLHS[~N~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sum~0,],base],StructAccessExpression[IdentifierExpression[~#sum~0,],offset]]] [2020-12-23 01:13:24,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:13:24,337 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:13:24,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24 WrapperNode [2020-12-23 01:13:24,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:13:24,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:13:24,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:13:24,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:13:24,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:13:24,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:13:24,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:13:24,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:13:24,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... [2020-12-23 01:13:24,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:13:24,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:13:24,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:13:24,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:13:24,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:13:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:13:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:13:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:13:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:13:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:13:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:13:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:13:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:13:24,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:13:24,911 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 01:13:24,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:13:24 BoogieIcfgContainer [2020-12-23 01:13:24,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:13:24,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:13:24,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:13:24,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:13:24,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:13:23" (1/3) ... [2020-12-23 01:13:24,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423ad4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:13:24, skipping insertion in model container [2020-12-23 01:13:24,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:24" (2/3) ... [2020-12-23 01:13:24,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423ad4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:13:24, skipping insertion in model container [2020-12-23 01:13:24,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:13:24" (3/3) ... [2020-12-23 01:13:24,952 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1.c [2020-12-23 01:13:24,962 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:13:24,973 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:13:25,034 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:13:25,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:13:25,074 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:13:25,074 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:13:25,074 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:13:25,075 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:13:25,075 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:13:25,075 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:13:25,075 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:13:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-23 01:13:25,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:13:25,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:25,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:25,100 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:25,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:25,107 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-12-23 01:13:25,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:25,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871539776] [2020-12-23 01:13:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:25,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871539776] [2020-12-23 01:13:25,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:13:25,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:13:25,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316231813] [2020-12-23 01:13:25,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:13:25,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:25,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:13:25,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:13:25,447 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-23 01:13:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:25,473 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2020-12-23 01:13:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:13:25,475 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 01:13:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:25,497 INFO L225 Difference]: With dead ends: 36 [2020-12-23 01:13:25,498 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 01:13:25,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:13:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 01:13:25,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 01:13:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 01:13:25,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-23 01:13:25,546 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2020-12-23 01:13:25,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:25,547 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-23 01:13:25,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:13:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-23 01:13:25,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:13:25,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:25,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:25,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:13:25,552 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:25,556 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-12-23 01:13:25,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:25,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108773065] [2020-12-23 01:13:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:25,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108773065] [2020-12-23 01:13:25,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:13:25,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:13:25,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664903242] [2020-12-23 01:13:25,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:13:25,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:25,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:13:25,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:13:25,712 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-12-23 01:13:25,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:25,807 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-12-23 01:13:25,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:13:25,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 01:13:25,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:25,809 INFO L225 Difference]: With dead ends: 30 [2020-12-23 01:13:25,809 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 01:13:25,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:13:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 01:13:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-12-23 01:13:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 01:13:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-12-23 01:13:25,816 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-12-23 01:13:25,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:25,817 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-12-23 01:13:25,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:13:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-12-23 01:13:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:13:25,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:25,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:25,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:13:25,818 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:25,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:25,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-12-23 01:13:25,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:25,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456196588] [2020-12-23 01:13:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 01:13:25,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456196588] [2020-12-23 01:13:25,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:13:25,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 01:13:25,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645812243] [2020-12-23 01:13:25,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 01:13:25,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:25,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 01:13:25,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:13:25,973 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-12-23 01:13:26,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:26,058 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-12-23 01:13:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 01:13:26,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 01:13:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:26,063 INFO L225 Difference]: With dead ends: 26 [2020-12-23 01:13:26,063 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 01:13:26,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 01:13:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 01:13:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-12-23 01:13:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-23 01:13:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-12-23 01:13:26,077 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2020-12-23 01:13:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:26,078 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-12-23 01:13:26,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 01:13:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-12-23 01:13:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:13:26,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:26,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:26,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:13:26,086 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:26,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-12-23 01:13:26,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:26,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972574980] [2020-12-23 01:13:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:26,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972574980] [2020-12-23 01:13:26,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950532288] [2020-12-23 01:13:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:26,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:13:26,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:13:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:26,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:13:26,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-23 01:13:26,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995654437] [2020-12-23 01:13:26,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:13:26,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:26,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:13:26,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:13:26,402 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2020-12-23 01:13:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:26,535 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-12-23 01:13:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 01:13:26,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-23 01:13:26,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:26,536 INFO L225 Difference]: With dead ends: 42 [2020-12-23 01:13:26,537 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 01:13:26,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:13:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 01:13:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-12-23 01:13:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 01:13:26,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-12-23 01:13:26,543 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2020-12-23 01:13:26,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:26,544 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-12-23 01:13:26,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:13:26,544 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-12-23 01:13:26,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 01:13:26,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:26,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:26,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:26,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:26,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:26,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1179965024, now seen corresponding path program 2 times [2020-12-23 01:13:26,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:26,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615415779] [2020-12-23 01:13:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:27,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615415779] [2020-12-23 01:13:27,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909092814] [2020-12-23 01:13:27,389 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:27,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:13:27,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:13:27,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 01:13:27,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:13:27,610 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:13:27,612 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:27,623 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:27,624 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:27,624 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2020-12-23 01:13:27,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:27,828 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 01:13:27,830 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:27,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:27,864 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:13:27,865 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:35 [2020-12-23 01:13:28,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:28,078 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:28,079 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 54 [2020-12-23 01:13:28,084 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:28,126 INFO L625 ElimStorePlain]: treesize reduction 28, result has 64.1 percent of original size [2020-12-23 01:13:28,139 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-23 01:13:28,139 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:67, output treesize:50 [2020-12-23 01:13:28,539 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:28,545 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:13:28,552 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:28,557 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:28,559 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:28,564 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:28,566 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:28,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:28,574 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:28,575 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:28,581 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:13:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:28,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:13:28,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2020-12-23 01:13:28,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964916255] [2020-12-23 01:13:28,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-23 01:13:28,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:28,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-23 01:13:28,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2020-12-23 01:13:28,625 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 27 states. [2020-12-23 01:13:32,860 WARN L197 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-12-23 01:13:33,630 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-12-23 01:13:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:36,881 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-12-23 01:13:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-23 01:13:36,881 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 23 [2020-12-23 01:13:36,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:36,883 INFO L225 Difference]: With dead ends: 66 [2020-12-23 01:13:36,883 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 01:13:36,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=586, Invalid=2493, Unknown=1, NotChecked=0, Total=3080 [2020-12-23 01:13:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 01:13:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2020-12-23 01:13:36,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-23 01:13:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-12-23 01:13:36,895 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 23 [2020-12-23 01:13:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:36,895 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-12-23 01:13:36,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-12-23 01:13:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-12-23 01:13:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:13:36,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:36,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:37,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:37,112 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:37,113 INFO L82 PathProgramCache]: Analyzing trace with hash 500482496, now seen corresponding path program 3 times [2020-12-23 01:13:37,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:37,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522458207] [2020-12-23 01:13:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:37,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522458207] [2020-12-23 01:13:37,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407986525] [2020-12-23 01:13:37,279 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:37,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 01:13:37,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:13:37,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 01:13:37,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:13:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 01:13:37,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:13:37,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2020-12-23 01:13:37,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771832941] [2020-12-23 01:13:37,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 01:13:37,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 01:13:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:13:37,646 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 19 states. [2020-12-23 01:13:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:37,891 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-12-23 01:13:37,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 01:13:37,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 29 [2020-12-23 01:13:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:37,896 INFO L225 Difference]: With dead ends: 57 [2020-12-23 01:13:37,896 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 01:13:37,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-12-23 01:13:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 01:13:37,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-12-23 01:13:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 01:13:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-23 01:13:37,904 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 29 [2020-12-23 01:13:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:37,904 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-23 01:13:37,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 01:13:37,905 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-23 01:13:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:13:37,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:37,905 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:38,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:38,107 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:38,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:38,108 INFO L82 PathProgramCache]: Analyzing trace with hash -690020773, now seen corresponding path program 4 times [2020-12-23 01:13:38,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:38,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832346694] [2020-12-23 01:13:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:38,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832346694] [2020-12-23 01:13:38,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792815542] [2020-12-23 01:13:38,970 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:39,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:13:39,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:13:39,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 01:13:39,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:13:39,037 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:13:39,040 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,044 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:39,045 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:13:39,115 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:13:39,119 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,126 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:39,127 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:13:39,260 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-23 01:13:39,261 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 01:13:39,262 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,271 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:39,272 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,273 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2020-12-23 01:13:39,368 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-23 01:13:39,369 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2020-12-23 01:13:39,371 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,383 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:39,384 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,384 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-12-23 01:13:39,518 INFO L348 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2020-12-23 01:13:39,518 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 76 [2020-12-23 01:13:39,522 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,551 INFO L625 ElimStorePlain]: treesize reduction 42, result has 51.2 percent of original size [2020-12-23 01:13:39,552 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,552 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:44 [2020-12-23 01:13:39,669 INFO L348 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-12-23 01:13:39,670 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 37 [2020-12-23 01:13:39,672 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:39,685 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:39,688 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:13:39,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:62, output treesize:39 [2020-12-23 01:13:39,805 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:39,808 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:39,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:39,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:39,819 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:13:39,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:39,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:13:39,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:39,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:39,851 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:13:39,857 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:39,858 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:13:39,861 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:13:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:39,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:13:39,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2020-12-23 01:13:39,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713410084] [2020-12-23 01:13:39,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 01:13:39,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:39,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 01:13:39,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2020-12-23 01:13:39,904 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 31 states. [2020-12-23 01:13:42,436 WARN L197 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 60 DAG size of output: 28 [2020-12-23 01:13:44,561 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-12-23 01:13:46,948 WARN L197 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-12-23 01:13:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:47,013 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-12-23 01:13:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 01:13:47,013 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 29 [2020-12-23 01:13:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:47,014 INFO L225 Difference]: With dead ends: 50 [2020-12-23 01:13:47,015 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 01:13:47,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=377, Invalid=2073, Unknown=0, NotChecked=0, Total=2450 [2020-12-23 01:13:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 01:13:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-12-23 01:13:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 01:13:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-12-23 01:13:47,023 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2020-12-23 01:13:47,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:47,023 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-12-23 01:13:47,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 01:13:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-12-23 01:13:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:13:47,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:47,024 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:47,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:47,239 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:47,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:47,240 INFO L82 PathProgramCache]: Analyzing trace with hash 900913518, now seen corresponding path program 5 times [2020-12-23 01:13:47,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:47,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060824381] [2020-12-23 01:13:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:47,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060824381] [2020-12-23 01:13:47,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809694272] [2020-12-23 01:13:47,361 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:47,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 01:13:47,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:13:47,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:13:47,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:13:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:47,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:13:47,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2020-12-23 01:13:47,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997543867] [2020-12-23 01:13:47,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 01:13:47,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:47,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 01:13:47,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:13:47,564 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 16 states. [2020-12-23 01:13:47,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:47,781 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-12-23 01:13:47,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 01:13:47,782 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-12-23 01:13:47,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:47,783 INFO L225 Difference]: With dead ends: 58 [2020-12-23 01:13:47,783 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 01:13:47,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-12-23 01:13:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 01:13:47,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-12-23 01:13:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 01:13:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-23 01:13:47,791 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2020-12-23 01:13:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:47,791 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-23 01:13:47,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 01:13:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-23 01:13:47,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 01:13:47,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:47,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:48,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:48,007 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:48,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:48,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1277658368, now seen corresponding path program 6 times [2020-12-23 01:13:48,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:48,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72132753] [2020-12-23 01:13:48,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:49,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72132753] [2020-12-23 01:13:49,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527509647] [2020-12-23 01:13:49,437 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:49,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 01:13:49,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:13:49,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-23 01:13:49,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:13:49,618 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:13:49,619 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:49,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:49,628 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:49,628 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2020-12-23 01:13:49,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:49,728 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-23 01:13:49,729 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:49,739 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:49,740 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:49,741 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2020-12-23 01:13:49,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:49,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:49,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:49,869 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 32 treesize of output 34 [2020-12-23 01:13:49,871 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:49,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:49,886 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:49,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-12-23 01:13:50,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,033 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2020-12-23 01:13:50,038 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:50,055 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:50,056 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:50,056 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2020-12-23 01:13:50,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,210 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:13:50,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,216 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 51 [2020-12-23 01:13:50,220 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:50,237 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:50,239 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:50,239 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:56 [2020-12-23 01:13:50,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,469 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:13:50,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,471 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 51 [2020-12-23 01:13:50,474 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:50,496 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:50,499 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:50,500 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:80, output treesize:67 [2020-12-23 01:13:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,714 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:13:50,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:13:50,718 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 51 [2020-12-23 01:13:50,723 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:50,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:50,742 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:13:50,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:83, output treesize:63 [2020-12-23 01:13:51,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:51,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:51,054 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:51,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:13:51,059 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:51,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:51,062 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:13:51,066 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:13:51,067 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:13:51,069 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:13:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:51,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:13:51,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 41 [2020-12-23 01:13:51,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936968997] [2020-12-23 01:13:51,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-12-23 01:13:51,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:51,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-12-23 01:13:51,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1454, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 01:13:51,140 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 41 states. [2020-12-23 01:13:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:53,886 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-12-23 01:13:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 01:13:53,887 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 35 [2020-12-23 01:13:53,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:53,888 INFO L225 Difference]: With dead ends: 46 [2020-12-23 01:13:53,888 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 01:13:53,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=440, Invalid=3220, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 01:13:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 01:13:53,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-12-23 01:13:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 01:13:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-23 01:13:53,899 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2020-12-23 01:13:53,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:53,899 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-23 01:13:53,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-12-23 01:13:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-23 01:13:53,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 01:13:53,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:53,901 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:54,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:54,104 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:54,105 INFO L82 PathProgramCache]: Analyzing trace with hash 876019369, now seen corresponding path program 7 times [2020-12-23 01:13:54,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:54,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031411326] [2020-12-23 01:13:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:54,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031411326] [2020-12-23 01:13:54,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404087040] [2020-12-23 01:13:54,222 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:54,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 01:13:54,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:13:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:54,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:13:54,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2020-12-23 01:13:54,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831366091] [2020-12-23 01:13:54,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 01:13:54,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:13:54,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 01:13:54,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:13:54,446 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 19 states. [2020-12-23 01:13:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:13:54,684 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-12-23 01:13:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 01:13:54,685 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2020-12-23 01:13:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:13:54,685 INFO L225 Difference]: With dead ends: 67 [2020-12-23 01:13:54,686 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 01:13:54,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-12-23 01:13:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 01:13:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-12-23 01:13:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 01:13:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-12-23 01:13:54,693 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 38 [2020-12-23 01:13:54,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:13:54,694 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-12-23 01:13:54,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 01:13:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-12-23 01:13:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 01:13:54,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:13:54,695 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:13:54,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 01:13:54,909 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:13:54,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:13:54,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1188189509, now seen corresponding path program 8 times [2020-12-23 01:13:54,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:13:54,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28895089] [2020-12-23 01:13:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:13:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:13:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:13:57,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28895089] [2020-12-23 01:13:57,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735887405] [2020-12-23 01:13:57,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:13:57,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:13:57,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:13:57,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 43 conjunts are in the unsatisfiable core [2020-12-23 01:13:57,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:13:57,567 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:13:57,569 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:57,573 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:57,574 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:57,575 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:13:57,670 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:13:57,672 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:57,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:57,681 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:57,681 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:13:57,824 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-12-23 01:13:57,825 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2020-12-23 01:13:57,828 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:57,838 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:57,839 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:57,840 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2020-12-23 01:13:58,114 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:13:58,115 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 96 [2020-12-23 01:13:58,118 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:58,166 INFO L625 ElimStorePlain]: treesize reduction 44, result has 47.6 percent of original size [2020-12-23 01:13:58,168 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:58,168 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:13:58,442 INFO L348 Elim1Store]: treesize reduction 81, result has 52.9 percent of original size [2020-12-23 01:13:58,442 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 111 [2020-12-23 01:13:58,445 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:58,503 INFO L625 ElimStorePlain]: treesize reduction 44, result has 55.1 percent of original size [2020-12-23 01:13:58,504 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:58,504 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2020-12-23 01:13:58,897 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2020-12-23 01:13:58,897 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2020-12-23 01:13:58,899 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:58,921 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:13:58,923 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:58,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:57 [2020-12-23 01:13:59,210 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:13:59,211 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:13:59,214 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:59,273 INFO L625 ElimStorePlain]: treesize reduction 84, result has 43.6 percent of original size [2020-12-23 01:13:59,274 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:59,274 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:82, output treesize:65 [2020-12-23 01:13:59,607 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-12-23 01:13:59,608 INFO L348 Elim1Store]: treesize reduction 89, result has 56.8 percent of original size [2020-12-23 01:13:59,608 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 200 [2020-12-23 01:13:59,615 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:13:59,713 INFO L625 ElimStorePlain]: treesize reduction 167, result has 33.7 percent of original size [2020-12-23 01:13:59,714 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:13:59,714 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:91, output treesize:85 [2020-12-23 01:14:00,030 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:14:00,031 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 89 treesize of output 132 [2020-12-23 01:14:00,035 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:00,101 INFO L625 ElimStorePlain]: treesize reduction 96, result has 49.7 percent of original size [2020-12-23 01:14:00,102 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:00,102 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:102, output treesize:95 [2020-12-23 01:14:00,379 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2020-12-23 01:14:00,380 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 67 [2020-12-23 01:14:00,382 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:00,402 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:00,404 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:14:00,405 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:111, output treesize:89 [2020-12-23 01:14:00,562 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:00,566 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:00,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:00,572 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:14:00,578 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:00,580 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:14:00,585 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:00,587 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:00,589 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:14:00,594 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:00,596 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:14:00,599 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:14:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:00,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:00,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 51 [2020-12-23 01:14:00,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162130793] [2020-12-23 01:14:00,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-12-23 01:14:00,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:00,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-12-23 01:14:00,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 01:14:00,692 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 51 states. [2020-12-23 01:14:02,934 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 37 [2020-12-23 01:14:03,148 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 41 [2020-12-23 01:14:03,365 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2020-12-23 01:14:03,602 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 42 [2020-12-23 01:14:04,027 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2020-12-23 01:14:04,234 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-12-23 01:14:04,587 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2020-12-23 01:14:04,819 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2020-12-23 01:14:05,111 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-12-23 01:14:05,380 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-12-23 01:14:05,701 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 44 [2020-12-23 01:14:05,902 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-12-23 01:14:06,153 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 44 [2020-12-23 01:14:06,375 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-12-23 01:14:06,610 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 45 [2020-12-23 01:14:06,829 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2020-12-23 01:14:07,091 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 46 [2020-12-23 01:14:07,310 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2020-12-23 01:14:07,570 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 43 [2020-12-23 01:14:07,826 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-12-23 01:14:08,159 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2020-12-23 01:14:08,338 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-12-23 01:14:08,624 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-12-23 01:14:09,121 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-12-23 01:14:09,451 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 41 [2020-12-23 01:14:09,969 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-23 01:14:10,206 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 01:14:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:10,342 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-12-23 01:14:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-23 01:14:10,343 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 41 [2020-12-23 01:14:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:10,344 INFO L225 Difference]: With dead ends: 81 [2020-12-23 01:14:10,345 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 01:14:10,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2791 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1057, Invalid=8645, Unknown=0, NotChecked=0, Total=9702 [2020-12-23 01:14:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 01:14:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 45. [2020-12-23 01:14:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 01:14:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-12-23 01:14:10,357 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 41 [2020-12-23 01:14:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:10,357 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-12-23 01:14:10,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-12-23 01:14:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-12-23 01:14:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 01:14:10,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:10,358 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:10,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 01:14:10,568 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:10,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:10,569 INFO L82 PathProgramCache]: Analyzing trace with hash -931892978, now seen corresponding path program 9 times [2020-12-23 01:14:10,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:10,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173251169] [2020-12-23 01:14:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:10,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173251169] [2020-12-23 01:14:10,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895107435] [2020-12-23 01:14:10,731 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:10,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 01:14:10,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:10,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 01:14:10,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:11,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:11,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2020-12-23 01:14:11,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526550993] [2020-12-23 01:14:11,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 01:14:11,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 01:14:11,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-12-23 01:14:11,044 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 22 states. [2020-12-23 01:14:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:11,343 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-12-23 01:14:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 01:14:11,344 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2020-12-23 01:14:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:11,345 INFO L225 Difference]: With dead ends: 76 [2020-12-23 01:14:11,346 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 01:14:11,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-12-23 01:14:11,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 01:14:11,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-12-23 01:14:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 01:14:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-12-23 01:14:11,355 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2020-12-23 01:14:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:11,355 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-12-23 01:14:11,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 01:14:11,356 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-12-23 01:14:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 01:14:11,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:11,357 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:11,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:11,572 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:11,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1528150112, now seen corresponding path program 10 times [2020-12-23 01:14:11,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:11,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871107631] [2020-12-23 01:14:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:12,806 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-23 01:14:12,972 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 01:14:13,135 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-12-23 01:14:13,302 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-23 01:14:13,913 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 01:14:14,549 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-12-23 01:14:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:15,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871107631] [2020-12-23 01:14:15,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263580210] [2020-12-23 01:14:15,343 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:15,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:14:15,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:15,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 01:14:15,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:15,421 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:14:15,422 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,428 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:15,429 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,429 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:14:15,554 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:14:15,555 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:15,564 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,564 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:14:15,738 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:15,738 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:14:15,740 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,768 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:14:15,769 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:15,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:14:15,965 INFO L348 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2020-12-23 01:14:15,965 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 37 treesize of output 69 [2020-12-23 01:14:15,967 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:16,001 INFO L625 ElimStorePlain]: treesize reduction 22, result has 64.5 percent of original size [2020-12-23 01:14:16,002 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:16,003 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:14:16,249 INFO L348 Elim1Store]: treesize reduction 126, result has 33.7 percent of original size [2020-12-23 01:14:16,249 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 84 [2020-12-23 01:14:16,252 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:16,292 INFO L625 ElimStorePlain]: treesize reduction 22, result has 70.3 percent of original size [2020-12-23 01:14:16,293 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:16,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2020-12-23 01:14:16,679 INFO L348 Elim1Store]: treesize reduction 176, result has 17.4 percent of original size [2020-12-23 01:14:16,680 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 58 [2020-12-23 01:14:16,684 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:16,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:16,703 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:16,704 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:53 [2020-12-23 01:14:16,975 INFO L348 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2020-12-23 01:14:16,976 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2020-12-23 01:14:16,978 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:17,001 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:17,002 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:17,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:63 [2020-12-23 01:14:17,319 INFO L348 Elim1Store]: treesize reduction 120, result has 37.2 percent of original size [2020-12-23 01:14:17,320 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 154 [2020-12-23 01:14:17,325 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:17,391 INFO L625 ElimStorePlain]: treesize reduction 90, result has 44.1 percent of original size [2020-12-23 01:14:17,396 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:17,396 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:88, output treesize:71 [2020-12-23 01:14:17,847 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2020-12-23 01:14:17,848 INFO L348 Elim1Store]: treesize reduction 137, result has 51.6 percent of original size [2020-12-23 01:14:17,848 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 241 [2020-12-23 01:14:17,856 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:17,953 INFO L625 ElimStorePlain]: treesize reduction 246, result has 25.0 percent of original size [2020-12-23 01:14:17,954 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:17,955 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:82 [2020-12-23 01:14:18,323 INFO L348 Elim1Store]: treesize reduction 120, result has 37.2 percent of original size [2020-12-23 01:14:18,323 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 156 [2020-12-23 01:14:18,328 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:18,401 INFO L625 ElimStorePlain]: treesize reduction 110, result has 44.4 percent of original size [2020-12-23 01:14:18,403 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:18,403 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:102, output treesize:88 [2020-12-23 01:14:18,897 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2020-12-23 01:14:18,899 INFO L348 Elim1Store]: treesize reduction 137, result has 51.6 percent of original size [2020-12-23 01:14:18,900 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 246 [2020-12-23 01:14:18,906 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:19,012 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2020-12-23 01:14:19,013 INFO L625 ElimStorePlain]: treesize reduction 242, result has 31.3 percent of original size [2020-12-23 01:14:19,014 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:19,014 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:115, output treesize:110 [2020-12-23 01:14:19,358 INFO L348 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2020-12-23 01:14:19,358 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 111 treesize of output 80 [2020-12-23 01:14:19,361 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:19,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:19,388 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:14:19,389 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:118, output treesize:82 [2020-12-23 01:14:19,589 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:19,591 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:19,596 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:19,598 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:14:19,602 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:19,604 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:19,605 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:19,609 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:19,611 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:14:19,614 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:14:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:19,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:19,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 27] total 57 [2020-12-23 01:14:19,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973948537] [2020-12-23 01:14:19,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-23 01:14:19,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:19,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-23 01:14:19,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=2910, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 01:14:19,732 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 57 states. [2020-12-23 01:14:22,486 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 41 [2020-12-23 01:14:22,818 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 43 [2020-12-23 01:14:23,075 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 44 [2020-12-23 01:14:23,370 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 45 [2020-12-23 01:14:23,851 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 46 [2020-12-23 01:14:24,294 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 45 [2020-12-23 01:14:24,616 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 49 [2020-12-23 01:14:24,886 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 51 [2020-12-23 01:14:25,172 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 51 [2020-12-23 01:14:25,448 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 50 [2020-12-23 01:14:25,740 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 52 [2020-12-23 01:14:26,012 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 52 [2020-12-23 01:14:26,328 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 51 [2020-12-23 01:14:26,687 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 54 [2020-12-23 01:14:27,137 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 58 [2020-12-23 01:14:27,469 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 55 [2020-12-23 01:14:27,847 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 56 [2020-12-23 01:14:28,194 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 57 [2020-12-23 01:14:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:28,288 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-23 01:14:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 01:14:28,289 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 47 [2020-12-23 01:14:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:28,289 INFO L225 Difference]: With dead ends: 58 [2020-12-23 01:14:28,289 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 01:14:28,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2269 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=775, Invalid=7597, Unknown=0, NotChecked=0, Total=8372 [2020-12-23 01:14:28,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 01:14:28,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-12-23 01:14:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 01:14:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-12-23 01:14:28,301 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2020-12-23 01:14:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:28,301 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-12-23 01:14:28,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-23 01:14:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-12-23 01:14:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 01:14:28,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:28,302 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:28,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:28,507 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:28,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1165332983, now seen corresponding path program 11 times [2020-12-23 01:14:28,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:28,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401152479] [2020-12-23 01:14:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:28,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401152479] [2020-12-23 01:14:28,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783431010] [2020-12-23 01:14:28,739 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:28,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-23 01:14:28,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:28,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 01:14:28,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:29,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:29,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2020-12-23 01:14:29,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807404761] [2020-12-23 01:14:29,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 01:14:29,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:29,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 01:14:29,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-12-23 01:14:29,157 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 25 states. [2020-12-23 01:14:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:29,516 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-12-23 01:14:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 01:14:29,517 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2020-12-23 01:14:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:29,517 INFO L225 Difference]: With dead ends: 85 [2020-12-23 01:14:29,517 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 01:14:29,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2020-12-23 01:14:29,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 01:14:29,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-12-23 01:14:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 01:14:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-12-23 01:14:29,528 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 50 [2020-12-23 01:14:29,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:29,528 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-12-23 01:14:29,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 01:14:29,528 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-12-23 01:14:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 01:14:29,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:29,529 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:29,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 01:14:29,745 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:29,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1276481307, now seen corresponding path program 12 times [2020-12-23 01:14:29,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:29,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807763071] [2020-12-23 01:14:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:30,856 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-23 01:14:31,466 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 01:14:31,639 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 01:14:31,811 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-12-23 01:14:32,169 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-23 01:14:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 9 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:33,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807763071] [2020-12-23 01:14:33,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136972654] [2020-12-23 01:14:33,346 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:33,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-23 01:14:33,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:14:33,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-23 01:14:33,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:33,629 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:14:33,630 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:33,640 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,640 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2020-12-23 01:14:33,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:33,797 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2020-12-23 01:14:33,799 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,812 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:33,816 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:33,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:32 [2020-12-23 01:14:33,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:33,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:33,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:33,992 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 34 treesize of output 36 [2020-12-23 01:14:33,994 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,011 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:34,012 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,012 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2020-12-23 01:14:34,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,324 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2020-12-23 01:14:34,326 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:34,348 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,348 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2020-12-23 01:14:34,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:34,601 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 66 [2020-12-23 01:14:34,603 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:34,630 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:34,631 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2020-12-23 01:14:35,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,062 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 72 [2020-12-23 01:14:35,064 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:35,095 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:35,096 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:35,096 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:71 [2020-12-23 01:14:35,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,656 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 80 [2020-12-23 01:14:35,660 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:35,697 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:35,699 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:35,699 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:83, output treesize:79 [2020-12-23 01:14:35,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,981 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:14:35,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:35,994 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 87 [2020-12-23 01:14:35,997 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:36,032 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:36,034 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:36,034 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:104, output treesize:81 [2020-12-23 01:14:36,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,333 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:14:36,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,339 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 87 [2020-12-23 01:14:36,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:36,382 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:36,385 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:36,385 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:104, output treesize:81 [2020-12-23 01:14:36,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,705 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:14:36,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:36,708 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 90 [2020-12-23 01:14:36,710 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:36,749 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:36,751 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:36,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:107, output treesize:90 [2020-12-23 01:14:37,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,102 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 87 [2020-12-23 01:14:37,105 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:37,142 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:37,144 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:37,144 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:105, output treesize:82 [2020-12-23 01:14:37,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:37,373 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:37,373 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 182 [2020-12-23 01:14:37,380 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:37,478 INFO L625 ElimStorePlain]: treesize reduction 126, result has 40.6 percent of original size [2020-12-23 01:14:37,479 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:14:37,479 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:107, output treesize:86 [2020-12-23 01:14:38,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:38,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:38,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:14:38,127 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:14:38,128 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 18 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 83 treesize of output 215 [2020-12-23 01:14:38,138 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:14:38,272 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-12-23 01:14:38,272 INFO L625 ElimStorePlain]: treesize reduction 248, result has 24.6 percent of original size [2020-12-23 01:14:38,275 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:14:38,275 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:97, output treesize:81 [2020-12-23 01:14:38,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:38,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:14:38,844 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:38,846 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:14:38,854 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:38,858 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:38,861 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:14:38,867 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:14:38,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:14:38,877 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:14:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:39,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:39,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36] total 68 [2020-12-23 01:14:39,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969117023] [2020-12-23 01:14:39,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-12-23 01:14:39,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:39,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-12-23 01:14:39,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=4047, Unknown=0, NotChecked=0, Total=4556 [2020-12-23 01:14:39,013 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 68 states. [2020-12-23 01:14:40,794 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-12-23 01:14:41,013 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 45 [2020-12-23 01:14:43,001 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 52 [2020-12-23 01:14:43,349 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-12-23 01:14:45,473 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2020-12-23 01:14:45,753 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-12-23 01:14:47,326 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-12-23 01:14:47,608 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-12-23 01:14:47,876 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-12-23 01:14:48,175 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-12-23 01:14:48,538 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2020-12-23 01:14:48,784 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2020-12-23 01:14:49,179 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2020-12-23 01:14:49,599 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-12-23 01:14:54,269 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-12-23 01:14:54,934 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2020-12-23 01:14:55,860 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-12-23 01:14:56,246 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-12-23 01:14:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:56,264 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2020-12-23 01:14:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-12-23 01:14:56,265 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 53 [2020-12-23 01:14:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:56,266 INFO L225 Difference]: With dead ends: 99 [2020-12-23 01:14:56,266 INFO L226 Difference]: Without dead ends: 93 [2020-12-23 01:14:56,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3999 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=1224, Invalid=10118, Unknown=0, NotChecked=0, Total=11342 [2020-12-23 01:14:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-23 01:14:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 57. [2020-12-23 01:14:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 01:14:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-12-23 01:14:56,282 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2020-12-23 01:14:56,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:56,282 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-12-23 01:14:56,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-12-23 01:14:56,283 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-12-23 01:14:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 01:14:56,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:56,284 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:56,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 01:14:56,494 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:56,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1610461358, now seen corresponding path program 13 times [2020-12-23 01:14:56,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:56,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905513579] [2020-12-23 01:14:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:56,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905513579] [2020-12-23 01:14:56,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964135592] [2020-12-23 01:14:56,752 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:14:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:56,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 01:14:56,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:14:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:14:57,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:14:57,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2020-12-23 01:14:57,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094642256] [2020-12-23 01:14:57,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 01:14:57,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:14:57,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 01:14:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-12-23 01:14:57,196 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 28 states. [2020-12-23 01:14:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:14:57,622 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-12-23 01:14:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 01:14:57,623 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-12-23 01:14:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:14:57,624 INFO L225 Difference]: With dead ends: 94 [2020-12-23 01:14:57,624 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 01:14:57,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 01:14:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 01:14:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2020-12-23 01:14:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 01:14:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-12-23 01:14:57,643 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 56 [2020-12-23 01:14:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:14:57,643 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-12-23 01:14:57,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 01:14:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-12-23 01:14:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 01:14:57,645 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:14:57,645 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:14:57,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 01:14:57,861 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:14:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:14:57,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1021559744, now seen corresponding path program 14 times [2020-12-23 01:14:57,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:14:57,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619310278] [2020-12-23 01:14:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:14:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:14:59,193 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-12-23 01:14:59,360 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 01:14:59,552 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-23 01:14:59,766 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-12-23 01:14:59,980 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-23 01:15:00,165 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-23 01:15:00,360 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-12-23 01:15:00,559 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-12-23 01:15:00,770 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-23 01:15:00,973 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 01:15:01,190 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-12-23 01:15:01,388 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-23 01:15:01,653 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-23 01:15:01,883 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-12-23 01:15:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 18 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:03,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619310278] [2020-12-23 01:15:03,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529912310] [2020-12-23 01:15:03,426 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:03,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:15:03,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:03,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-23 01:15:03,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:03,522 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:15:03,525 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:03,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:03,532 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:03,532 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:15:03,684 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:15:03,685 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:03,695 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:03,696 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:03,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:15:03,883 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-12-23 01:15:03,884 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2020-12-23 01:15:03,885 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:03,898 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:03,899 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:03,899 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2020-12-23 01:15:04,160 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:15:04,160 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 96 [2020-12-23 01:15:04,167 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:04,216 INFO L625 ElimStorePlain]: treesize reduction 44, result has 45.7 percent of original size [2020-12-23 01:15:04,218 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:04,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2020-12-23 01:15:04,531 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-23 01:15:04,532 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2020-12-23 01:15:04,532 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 138 [2020-12-23 01:15:04,536 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:04,605 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.1 percent of original size [2020-12-23 01:15:04,607 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:04,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2020-12-23 01:15:04,991 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-12-23 01:15:04,992 INFO L348 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2020-12-23 01:15:04,993 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 153 [2020-12-23 01:15:04,996 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:05,075 INFO L625 ElimStorePlain]: treesize reduction 66, result has 46.8 percent of original size [2020-12-23 01:15:05,076 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:05,077 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2020-12-23 01:15:05,621 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 49 [2020-12-23 01:15:05,622 INFO L348 Elim1Store]: treesize reduction 222, result has 39.0 percent of original size [2020-12-23 01:15:05,622 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 168 [2020-12-23 01:15:05,627 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:05,708 INFO L625 ElimStorePlain]: treesize reduction 66, result has 52.5 percent of original size [2020-12-23 01:15:05,709 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:05,709 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:73 [2020-12-23 01:15:06,219 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 54 [2020-12-23 01:15:06,220 INFO L348 Elim1Store]: treesize reduction 342, result has 31.0 percent of original size [2020-12-23 01:15:06,221 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 79 treesize of output 183 [2020-12-23 01:15:06,228 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:06,337 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-12-23 01:15:06,338 INFO L625 ElimStorePlain]: treesize reduction 66, result has 56.9 percent of original size [2020-12-23 01:15:06,339 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:06,339 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:91, output treesize:87 [2020-12-23 01:15:06,971 INFO L348 Elim1Store]: treesize reduction 252, result has 0.4 percent of original size [2020-12-23 01:15:06,972 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2020-12-23 01:15:06,975 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:07,017 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:07,019 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:07,019 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:88, output treesize:84 [2020-12-23 01:15:07,537 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:15:07,538 INFO L348 Elim1Store]: treesize reduction 252, result has 28.2 percent of original size [2020-12-23 01:15:07,539 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 96 treesize of output 206 [2020-12-23 01:15:07,545 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:07,657 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-12-23 01:15:07,658 INFO L625 ElimStorePlain]: treesize reduction 132, result has 41.1 percent of original size [2020-12-23 01:15:07,659 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:07,660 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:109, output treesize:92 [2020-12-23 01:15:08,340 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 86 [2020-12-23 01:15:08,341 INFO L348 Elim1Store]: treesize reduction 269, result has 43.1 percent of original size [2020-12-23 01:15:08,341 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 323 [2020-12-23 01:15:08,352 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:08,499 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2020-12-23 01:15:08,500 INFO L625 ElimStorePlain]: treesize reduction 330, result has 23.8 percent of original size [2020-12-23 01:15:08,502 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:08,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:103 [2020-12-23 01:15:09,066 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:15:09,067 INFO L348 Elim1Store]: treesize reduction 252, result has 28.2 percent of original size [2020-12-23 01:15:09,068 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 208 [2020-12-23 01:15:09,075 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:09,200 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2020-12-23 01:15:09,201 INFO L625 ElimStorePlain]: treesize reduction 158, result has 43.6 percent of original size [2020-12-23 01:15:09,202 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:09,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:122 [2020-12-23 01:15:09,946 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 86 [2020-12-23 01:15:09,947 INFO L348 Elim1Store]: treesize reduction 269, result has 43.1 percent of original size [2020-12-23 01:15:09,947 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 136 treesize of output 329 [2020-12-23 01:15:09,963 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:10,145 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 52 [2020-12-23 01:15:10,146 INFO L625 ElimStorePlain]: treesize reduction 328, result has 30.5 percent of original size [2020-12-23 01:15:10,147 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:10,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:149, output treesize:144 [2020-12-23 01:15:10,989 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 102 [2020-12-23 01:15:10,990 INFO L348 Elim1Store]: treesize reduction 232, result has 53.3 percent of original size [2020-12-23 01:15:10,991 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 159 treesize of output 395 [2020-12-23 01:15:11,004 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:11,188 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 56 [2020-12-23 01:15:11,188 INFO L625 ElimStorePlain]: treesize reduction 526, result has 23.9 percent of original size [2020-12-23 01:15:11,190 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:11,190 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:172, output treesize:165 [2020-12-23 01:15:12,228 WARN L197 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 129 [2020-12-23 01:15:12,229 INFO L348 Elim1Store]: treesize reduction 285, result has 55.5 percent of original size [2020-12-23 01:15:12,230 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 179 treesize of output 499 [2020-12-23 01:15:12,241 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:12,443 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 58 [2020-12-23 01:15:12,444 INFO L625 ElimStorePlain]: treesize reduction 476, result has 19.7 percent of original size [2020-12-23 01:15:12,445 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:12,446 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:192, output treesize:117 [2020-12-23 01:15:12,907 INFO L348 Elim1Store]: treesize reduction 252, result has 0.4 percent of original size [2020-12-23 01:15:12,907 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 116 treesize of output 101 [2020-12-23 01:15:12,911 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:12,943 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:12,945 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:15:12,946 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:126, output treesize:96 [2020-12-23 01:15:13,184 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:13,186 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:13,191 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:13,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:15:13,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:13,199 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:13,200 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:13,204 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:13,205 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:15:13,209 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:15:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:13,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:13,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 73 [2020-12-23 01:15:13,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409889548] [2020-12-23 01:15:13,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-12-23 01:15:13,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:13,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-12-23 01:15:13,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=4806, Unknown=0, NotChecked=0, Total=5256 [2020-12-23 01:15:13,393 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 73 states. [2020-12-23 01:15:16,965 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-12-23 01:15:17,246 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 43 [2020-12-23 01:15:17,599 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 51 [2020-12-23 01:15:17,920 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 45 [2020-12-23 01:15:18,250 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 52 [2020-12-23 01:15:18,604 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 46 [2020-12-23 01:15:18,817 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2020-12-23 01:15:19,188 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 55 [2020-12-23 01:15:19,650 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-12-23 01:15:19,863 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 49 [2020-12-23 01:15:20,242 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2020-12-23 01:15:20,550 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 53 [2020-12-23 01:15:20,908 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-12-23 01:15:21,276 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 56 [2020-12-23 01:15:21,610 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2020-12-23 01:15:21,893 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-12-23 01:15:22,276 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 59 [2020-12-23 01:15:22,582 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2020-12-23 01:15:22,933 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 56 [2020-12-23 01:15:23,234 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2020-12-23 01:15:23,617 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2020-12-23 01:15:23,919 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2020-12-23 01:15:24,295 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 59 [2020-12-23 01:15:24,722 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-12-23 01:15:25,173 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 57 [2020-12-23 01:15:25,496 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-12-23 01:15:25,909 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 61 [2020-12-23 01:15:26,145 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 01:15:26,565 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 60 [2020-12-23 01:15:26,799 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-23 01:15:27,230 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 61 [2020-12-23 01:15:27,478 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 01:15:27,936 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 63 [2020-12-23 01:15:28,187 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-23 01:15:28,604 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 63 [2020-12-23 01:15:28,859 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-23 01:15:29,442 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 69 [2020-12-23 01:15:30,139 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2020-12-23 01:15:30,981 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2020-12-23 01:15:31,427 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 54 [2020-12-23 01:15:32,027 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 54 [2020-12-23 01:15:32,795 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-12-23 01:15:33,140 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 56 [2020-12-23 01:15:33,522 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 50 [2020-12-23 01:15:34,011 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-12-23 01:15:34,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:34,116 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2020-12-23 01:15:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-12-23 01:15:34,117 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 59 [2020-12-23 01:15:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:34,118 INFO L225 Difference]: With dead ends: 113 [2020-12-23 01:15:34,118 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 01:15:34,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6246 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=1743, Invalid=17163, Unknown=0, NotChecked=0, Total=18906 [2020-12-23 01:15:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 01:15:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 72. [2020-12-23 01:15:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 01:15:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-12-23 01:15:34,135 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 59 [2020-12-23 01:15:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:34,136 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-12-23 01:15:34,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-12-23 01:15:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-12-23 01:15:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 01:15:34,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:34,137 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:34,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:34,349 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:34,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:34,350 INFO L82 PathProgramCache]: Analyzing trace with hash -936362080, now seen corresponding path program 15 times [2020-12-23 01:15:34,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:34,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935024424] [2020-12-23 01:15:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 120 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:34,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935024424] [2020-12-23 01:15:34,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293764958] [2020-12-23 01:15:34,743 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:35,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-23 01:15:35,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:35,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 01:15:35,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 145 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:35,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:35,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 33 [2020-12-23 01:15:35,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119949339] [2020-12-23 01:15:35,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 01:15:35,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:35,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 01:15:35,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 01:15:35,646 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 33 states. [2020-12-23 01:15:36,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:36,243 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-12-23 01:15:36,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 01:15:36,244 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 65 [2020-12-23 01:15:36,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:36,245 INFO L225 Difference]: With dead ends: 106 [2020-12-23 01:15:36,245 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 01:15:36,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 01:15:36,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 01:15:36,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-12-23 01:15:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 01:15:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-12-23 01:15:36,256 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 65 [2020-12-23 01:15:36,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:36,256 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-12-23 01:15:36,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 01:15:36,256 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-12-23 01:15:36,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 01:15:36,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:36,257 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:36,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 01:15:36,459 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:36,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:36,460 INFO L82 PathProgramCache]: Analyzing trace with hash -737883269, now seen corresponding path program 16 times [2020-12-23 01:15:36,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:36,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844893053] [2020-12-23 01:15:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:37,524 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 01:15:37,677 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-12-23 01:15:37,865 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-12-23 01:15:38,049 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 01:15:38,294 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-12-23 01:15:38,505 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-23 01:15:38,737 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 01:15:39,019 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-23 01:15:39,284 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 01:15:39,520 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 01:15:39,775 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-12-23 01:15:40,026 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-12-23 01:15:40,320 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-12-23 01:15:40,530 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-23 01:15:40,762 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-12-23 01:15:41,002 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-12-23 01:15:41,361 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-12-23 01:15:41,712 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-12-23 01:15:41,973 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-12-23 01:15:42,202 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-12-23 01:15:42,440 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-23 01:15:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 30 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:44,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844893053] [2020-12-23 01:15:44,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664863887] [2020-12-23 01:15:44,071 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:44,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:15:44,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:44,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 65 conjunts are in the unsatisfiable core [2020-12-23 01:15:44,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:44,148 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:15:44,154 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:44,159 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:44,160 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:44,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:15:44,348 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:15:44,350 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:44,360 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:44,361 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:44,361 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:15:44,593 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:44,593 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:15:44,598 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:44,636 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:15:44,637 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:44,638 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:15:44,953 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:15:44,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 96 [2020-12-23 01:15:44,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:45,019 INFO L625 ElimStorePlain]: treesize reduction 44, result has 45.7 percent of original size [2020-12-23 01:15:45,020 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:45,020 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2020-12-23 01:15:45,406 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-23 01:15:45,407 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2020-12-23 01:15:45,408 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 138 [2020-12-23 01:15:45,411 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:45,491 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.1 percent of original size [2020-12-23 01:15:45,492 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:45,493 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2020-12-23 01:15:45,945 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-12-23 01:15:45,946 INFO L348 Elim1Store]: treesize reduction 72, result has 68.6 percent of original size [2020-12-23 01:15:45,947 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 180 [2020-12-23 01:15:45,951 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:46,056 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2020-12-23 01:15:46,057 INFO L625 ElimStorePlain]: treesize reduction 88, result has 38.5 percent of original size [2020-12-23 01:15:46,058 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:46,058 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:59, output treesize:55 [2020-12-23 01:15:46,601 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2020-12-23 01:15:46,602 INFO L348 Elim1Store]: treesize reduction 120, result has 62.0 percent of original size [2020-12-23 01:15:46,602 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 222 [2020-12-23 01:15:46,607 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:46,737 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-12-23 01:15:46,738 INFO L625 ElimStorePlain]: treesize reduction 110, result has 36.8 percent of original size [2020-12-23 01:15:46,739 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:46,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:64 [2020-12-23 01:15:47,411 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2020-12-23 01:15:47,413 INFO L348 Elim1Store]: treesize reduction 180, result has 56.6 percent of original size [2020-12-23 01:15:47,413 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 264 [2020-12-23 01:15:47,417 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:47,571 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-12-23 01:15:47,572 INFO L625 ElimStorePlain]: treesize reduction 132, result has 35.6 percent of original size [2020-12-23 01:15:47,574 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:47,574 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:73 [2020-12-23 01:15:48,279 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 40 [2020-12-23 01:15:48,280 INFO L348 Elim1Store]: treesize reduction 434, result has 12.9 percent of original size [2020-12-23 01:15:48,281 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 94 [2020-12-23 01:15:48,284 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:48,319 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:48,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:48,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:80 [2020-12-23 01:15:48,727 INFO L348 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2020-12-23 01:15:48,727 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2020-12-23 01:15:48,732 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:48,789 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:48,790 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:48,791 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:90 [2020-12-23 01:15:49,471 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:15:49,472 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:15:49,473 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 232 [2020-12-23 01:15:49,479 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:49,609 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2020-12-23 01:15:49,610 INFO L625 ElimStorePlain]: treesize reduction 168, result has 36.8 percent of original size [2020-12-23 01:15:49,611 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:49,612 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:115, output treesize:98 [2020-12-23 01:15:50,525 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 97 [2020-12-23 01:15:50,526 INFO L348 Elim1Store]: treesize reduction 353, result has 39.8 percent of original size [2020-12-23 01:15:50,527 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 364 [2020-12-23 01:15:50,541 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:50,740 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 57 [2020-12-23 01:15:50,741 INFO L625 ElimStorePlain]: treesize reduction 384, result has 22.1 percent of original size [2020-12-23 01:15:50,743 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:50,743 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:109 [2020-12-23 01:15:51,473 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:15:51,474 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:15:51,475 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 119 treesize of output 234 [2020-12-23 01:15:51,484 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:51,615 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-12-23 01:15:51,616 INFO L625 ElimStorePlain]: treesize reduction 170, result has 40.4 percent of original size [2020-12-23 01:15:51,618 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:51,618 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:129, output treesize:115 [2020-12-23 01:15:52,354 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:15:52,355 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:15:52,356 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 126 treesize of output 237 [2020-12-23 01:15:52,366 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:52,500 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2020-12-23 01:15:52,501 INFO L625 ElimStorePlain]: treesize reduction 180, result has 37.3 percent of original size [2020-12-23 01:15:52,502 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:52,503 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:136, output treesize:107 [2020-12-23 01:15:53,443 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 97 [2020-12-23 01:15:53,445 INFO L348 Elim1Store]: treesize reduction 353, result has 39.8 percent of original size [2020-12-23 01:15:53,445 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 123 treesize of output 367 [2020-12-23 01:15:53,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:53,689 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2020-12-23 01:15:53,690 INFO L625 ElimStorePlain]: treesize reduction 442, result has 20.9 percent of original size [2020-12-23 01:15:53,692 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:53,692 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:133, output treesize:117 [2020-12-23 01:15:54,961 WARN L197 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 132 [2020-12-23 01:15:54,962 INFO L348 Elim1Store]: treesize reduction 388, result has 47.6 percent of original size [2020-12-23 01:15:54,963 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 133 treesize of output 500 [2020-12-23 01:15:54,975 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:55,258 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 61 [2020-12-23 01:15:55,260 INFO L625 ElimStorePlain]: treesize reduction 606, result has 16.5 percent of original size [2020-12-23 01:15:55,261 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:55,262 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:143, output treesize:120 [2020-12-23 01:15:56,822 WARN L197 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 303 DAG size of output: 167 [2020-12-23 01:15:56,824 INFO L348 Elim1Store]: treesize reduction 441, result has 51.8 percent of original size [2020-12-23 01:15:56,825 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 66 case distinctions, treesize of input 136 treesize of output 632 [2020-12-23 01:15:56,845 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:57,165 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 61 [2020-12-23 01:15:57,166 INFO L625 ElimStorePlain]: treesize reduction 978, result has 11.5 percent of original size [2020-12-23 01:15:57,168 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:57,168 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:146, output treesize:127 [2020-12-23 01:15:57,717 INFO L348 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2020-12-23 01:15:57,717 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 114 [2020-12-23 01:15:57,720 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:57,770 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:57,773 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:15:57,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:139, output treesize:122 [2020-12-23 01:15:58,079 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:58,082 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:58,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:58,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:58,086 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:15:58,091 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:58,092 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:15:58,098 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:58,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:58,100 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:15:58,103 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:58,105 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:15:58,107 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:15:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:58,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:58,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 39] total 79 [2020-12-23 01:15:58,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484230592] [2020-12-23 01:15:58,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-12-23 01:15:58,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:58,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-12-23 01:15:58,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=5660, Unknown=0, NotChecked=0, Total=6162 [2020-12-23 01:15:58,321 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 79 states. [2020-12-23 01:16:01,580 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-12-23 01:16:01,906 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-12-23 01:16:02,201 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 36 [2020-12-23 01:16:02,516 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-12-23 01:16:02,865 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2020-12-23 01:16:03,175 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2020-12-23 01:16:03,504 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2020-12-23 01:16:03,903 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2020-12-23 01:16:04,244 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2020-12-23 01:16:04,658 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 46 [2020-12-23 01:16:05,124 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 50 [2020-12-23 01:16:05,528 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 48 [2020-12-23 01:16:06,075 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 48 [2020-12-23 01:16:06,307 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2020-12-23 01:16:06,850 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 57 [2020-12-23 01:16:07,150 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 51 [2020-12-23 01:16:07,492 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 53 [2020-12-23 01:16:07,901 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2020-12-23 01:16:08,242 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 57 [2020-12-23 01:16:08,654 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 61 [2020-12-23 01:16:09,051 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 55 [2020-12-23 01:16:09,478 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 60 [2020-12-23 01:16:09,897 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 55 [2020-12-23 01:16:10,341 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 55 [2020-12-23 01:16:10,791 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 57 [2020-12-23 01:16:11,269 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-12-23 01:16:11,752 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 59 [2020-12-23 01:16:12,251 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 61 [2020-12-23 01:16:12,747 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 62 [2020-12-23 01:16:13,282 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 67 [2020-12-23 01:16:13,788 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 59 [2020-12-23 01:16:14,474 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 65 [2020-12-23 01:16:15,003 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 59 [2020-12-23 01:16:15,686 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 59 [2020-12-23 01:16:16,223 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 61 [2020-12-23 01:16:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:16,419 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-12-23 01:16:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-12-23 01:16:16,421 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 65 [2020-12-23 01:16:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:16,422 INFO L225 Difference]: With dead ends: 76 [2020-12-23 01:16:16,422 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 01:16:16,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4978 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=1242, Invalid=14258, Unknown=0, NotChecked=0, Total=15500 [2020-12-23 01:16:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 01:16:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-12-23 01:16:16,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-23 01:16:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-12-23 01:16:16,438 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 65 [2020-12-23 01:16:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:16,438 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-12-23 01:16:16,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-12-23 01:16:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-12-23 01:16:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 01:16:16,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:16,439 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:16,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:16,653 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:16,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:16,654 INFO L82 PathProgramCache]: Analyzing trace with hash 958437454, now seen corresponding path program 17 times [2020-12-23 01:16:16,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:16,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786727114] [2020-12-23 01:16:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 120 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:17,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786727114] [2020-12-23 01:16:17,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025406196] [2020-12-23 01:16:17,160 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:17,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-23 01:16:17,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:17,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 01:16:17,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:18,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:18,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2020-12-23 01:16:18,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632307788] [2020-12-23 01:16:18,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 01:16:18,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:18,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 01:16:18,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 01:16:18,188 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 34 states. [2020-12-23 01:16:18,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:18,990 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-12-23 01:16:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 01:16:18,992 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 68 [2020-12-23 01:16:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:18,993 INFO L225 Difference]: With dead ends: 112 [2020-12-23 01:16:18,993 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 01:16:18,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=454, Invalid=1438, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 01:16:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 01:16:19,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-12-23 01:16:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 01:16:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-12-23 01:16:19,010 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2020-12-23 01:16:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:19,010 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-12-23 01:16:19,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 01:16:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-12-23 01:16:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 01:16:19,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:19,011 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:19,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:19,225 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:19,226 INFO L82 PathProgramCache]: Analyzing trace with hash 176183520, now seen corresponding path program 18 times [2020-12-23 01:16:19,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:19,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996013752] [2020-12-23 01:16:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:20,038 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-12-23 01:16:20,208 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-12-23 01:16:20,362 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-23 01:16:20,505 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-12-23 01:16:20,694 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-12-23 01:16:20,869 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-12-23 01:16:21,098 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-12-23 01:16:21,317 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-23 01:16:21,608 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-12-23 01:16:21,847 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-23 01:16:22,151 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-12-23 01:16:22,442 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-12-23 01:16:22,761 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-23 01:16:23,166 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-12-23 01:16:23,505 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-12-23 01:16:23,822 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-12-23 01:16:24,139 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-12-23 01:16:24,496 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-12-23 01:16:24,869 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-12-23 01:16:25,158 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-12-23 01:16:25,477 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-12-23 01:16:25,782 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-23 01:16:26,274 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-23 01:16:26,784 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-12-23 01:16:27,156 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-12-23 01:16:27,425 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-12-23 01:16:27,723 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-23 01:16:27,983 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-12-23 01:16:28,262 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-12-23 01:16:28,515 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-12-23 01:16:28,789 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-12-23 01:16:29,066 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-23 01:16:29,338 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-12-23 01:16:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 45 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:30,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996013752] [2020-12-23 01:16:30,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968610799] [2020-12-23 01:16:30,528 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:31,035 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-23 01:16:31,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:31,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 79 conjunts are in the unsatisfiable core [2020-12-23 01:16:31,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:31,076 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,076 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-12-23 01:16:31,083 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,095 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,096 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,097 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:11 [2020-12-23 01:16:31,123 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:31,125 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,144 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,146 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,146 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 01:16:31,179 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2020-12-23 01:16:31,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,198 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2020-12-23 01:16:31,200 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,212 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,237 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:47, output treesize:36 [2020-12-23 01:16:31,273 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2020-12-23 01:16:31,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,296 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2020-12-23 01:16:31,298 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,311 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,336 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,338 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,338 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:67, output treesize:49 [2020-12-23 01:16:31,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,509 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2020-12-23 01:16:31,512 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,539 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,541 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,541 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2020-12-23 01:16:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:31,910 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 71 [2020-12-23 01:16:31,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:31,947 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:31,947 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:77, output treesize:73 [2020-12-23 01:16:32,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,355 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 86 [2020-12-23 01:16:32,358 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:32,398 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,398 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:85 [2020-12-23 01:16:32,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,925 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 136 [2020-12-23 01:16:32,929 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,976 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:32,977 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,978 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:140, output treesize:136 [2020-12-23 01:16:33,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,543 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 151 [2020-12-23 01:16:33,547 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:33,599 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,599 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:152, output treesize:148 [2020-12-23 01:16:34,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,527 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 166 [2020-12-23 01:16:34,531 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,593 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:34,595 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,595 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:167, output treesize:163 [2020-12-23 01:16:37,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:37,928 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 176 [2020-12-23 01:16:37,933 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:38,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:38,012 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:38,013 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:182, output treesize:178 [2020-12-23 01:16:38,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,557 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:38,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:38,644 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 175 [2020-12-23 01:16:38,648 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:38,728 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:38,731 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:38,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:203, output treesize:176 [2020-12-23 01:16:39,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,311 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:39,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:39,370 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2020-12-23 01:16:39,376 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:39,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:39,460 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:39,460 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:199, output treesize:187 [2020-12-23 01:16:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,090 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,159 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 161 [2020-12-23 01:16:40,162 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:40,257 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:40,260 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:40,260 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:206, output treesize:175 [2020-12-23 01:16:40,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,895 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:40,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:40,957 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 156 [2020-12-23 01:16:40,960 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:41,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:41,045 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:41,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:201, output treesize:154 [2020-12-23 01:16:41,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,801 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:41,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:41,844 INFO L244 Elim1Store]: Index analysis took 104 ms [2020-12-23 01:16:41,847 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 147 [2020-12-23 01:16:41,852 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:41,933 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:41,936 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:41,937 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:180, output treesize:152 [2020-12-23 01:16:42,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,764 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:42,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:42,778 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 131 [2020-12-23 01:16:42,783 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:42,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:42,863 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:42,864 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:162, output treesize:138 [2020-12-23 01:16:43,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:43,451 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 01:16:43,452 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:43,453 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 37 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 9 case distinctions, treesize of input 137 treesize of output 277 [2020-12-23 01:16:43,462 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:43,684 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2020-12-23 01:16:43,685 INFO L625 ElimStorePlain]: treesize reduction 208, result has 41.4 percent of original size [2020-12-23 01:16:43,689 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:43,690 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:163, output treesize:147 [2020-12-23 01:16:44,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:45,109 WARN L197 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2020-12-23 01:16:45,111 INFO L348 Elim1Store]: treesize reduction 17, result has 94.2 percent of original size [2020-12-23 01:16:45,111 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 37 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 19 case distinctions, treesize of input 147 treesize of output 433 [2020-12-23 01:16:45,123 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:45,433 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2020-12-23 01:16:45,434 INFO L625 ElimStorePlain]: treesize reduction 468, result has 23.4 percent of original size [2020-12-23 01:16:45,438 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:45,438 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:173, output treesize:143 [2020-12-23 01:16:46,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:46,820 INFO L244 Elim1Store]: Index analysis took 120 ms [2020-12-23 01:16:47,167 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-12-23 01:16:47,168 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:47,169 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 24 case distinctions, treesize of input 123 treesize of output 439 [2020-12-23 01:16:47,182 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:47,560 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 58 [2020-12-23 01:16:47,561 INFO L625 ElimStorePlain]: treesize reduction 618, result has 16.8 percent of original size [2020-12-23 01:16:47,565 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:47,566 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:141, output treesize:125 [2020-12-23 01:16:56,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:56,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:56,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:56,815 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:56,818 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:16:56,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:56,828 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:56,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:56,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:56,839 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:56,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:16:56,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:16:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 9 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:57,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:57,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 84 [2020-12-23 01:16:57,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976006068] [2020-12-23 01:16:57,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-12-23 01:16:57,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:57,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-12-23 01:16:57,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=856, Invalid=6115, Unknown=1, NotChecked=0, Total=6972 [2020-12-23 01:16:57,171 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 84 states. [2020-12-23 01:17:04,669 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 71 [2020-12-23 01:17:07,432 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2020-12-23 01:17:07,995 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2020-12-23 01:17:09,869 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2020-12-23 01:17:10,447 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2020-12-23 01:17:11,083 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2020-12-23 01:17:11,545 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 76 [2020-12-23 01:17:12,212 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2020-12-23 01:17:12,800 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2020-12-23 01:17:13,517 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2020-12-23 01:17:14,273 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-12-23 01:17:15,318 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-23 01:17:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:15,680 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-12-23 01:17:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-12-23 01:17:15,682 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 71 [2020-12-23 01:17:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:15,683 INFO L225 Difference]: With dead ends: 81 [2020-12-23 01:17:15,683 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 01:17:15,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4740 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=1342, Invalid=12463, Unknown=1, NotChecked=0, Total=13806 [2020-12-23 01:17:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 01:17:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-12-23 01:17:15,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 01:17:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-12-23 01:17:15,698 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2020-12-23 01:17:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:15,698 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-12-23 01:17:15,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-12-23 01:17:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-12-23 01:17:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 01:17:15,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:15,699 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:15,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 01:17:15,900 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1829491913, now seen corresponding path program 19 times [2020-12-23 01:17:15,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:15,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790880896] [2020-12-23 01:17:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 148 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:16,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790880896] [2020-12-23 01:17:16,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379114847] [2020-12-23 01:17:16,581 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:16,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 01:17:16,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 176 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:17,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:17,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 37 [2020-12-23 01:17:17,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752137185] [2020-12-23 01:17:17,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 01:17:17,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:17,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 01:17:17,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 01:17:17,581 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 37 states. [2020-12-23 01:17:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:18,686 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2020-12-23 01:17:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 01:17:18,689 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2020-12-23 01:17:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:18,690 INFO L225 Difference]: With dead ends: 121 [2020-12-23 01:17:18,690 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 01:17:18,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=537, Invalid=1719, Unknown=0, NotChecked=0, Total=2256 [2020-12-23 01:17:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 01:17:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-12-23 01:17:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 01:17:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-12-23 01:17:18,704 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 74 [2020-12-23 01:17:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:18,704 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-12-23 01:17:18,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 01:17:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-12-23 01:17:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 01:17:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:18,705 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:18,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:18,906 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:18,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:18,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1391026139, now seen corresponding path program 20 times [2020-12-23 01:17:18,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:18,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34688875] [2020-12-23 01:17:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:19,585 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-12-23 01:17:19,737 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-12-23 01:17:19,901 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-23 01:17:20,111 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2020-12-23 01:17:20,334 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-12-23 01:17:20,552 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-23 01:17:20,782 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-12-23 01:17:21,063 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-12-23 01:17:21,351 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-23 01:17:21,665 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-12-23 01:17:21,978 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-12-23 01:17:22,335 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-23 01:17:22,685 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-12-23 01:17:23,071 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-12-23 01:17:23,474 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-12-23 01:17:23,927 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-12-23 01:17:24,372 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2020-12-23 01:17:24,861 WARN L197 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-12-23 01:17:25,359 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-12-23 01:17:25,851 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-23 01:17:26,370 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-12-23 01:17:26,788 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-12-23 01:17:27,238 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-12-23 01:17:27,692 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-12-23 01:17:28,195 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-12-23 01:17:28,621 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-12-23 01:17:29,069 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-12-23 01:17:29,526 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-12-23 01:17:30,052 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-12-23 01:17:30,494 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-12-23 01:17:30,891 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-12-23 01:17:31,281 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-12-23 01:17:31,754 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-23 01:17:32,129 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52