/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/brs4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:09:19,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:09:19,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:09:19,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:09:19,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:09:19,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:09:19,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:09:19,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:09:19,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:09:19,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:09:19,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:09:19,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:09:19,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:09:19,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:09:19,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:09:19,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:09:19,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:09:19,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:09:19,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:09:19,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:09:19,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:09:19,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:09:19,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:09:19,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:09:19,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 11:09:19,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:09:19,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:09:19,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:09:19,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 11:09:19,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:09:19,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:09:19,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:09:19,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:09:19,949 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:09:19,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:09:19,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:09:19,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:09:19,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:09:19,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:09:19,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:09:19,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:09:19,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:09:19,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:09:19,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:09:19,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:09:19,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:09:19,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:09:19,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:09:19,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:09:19,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:09:19,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:09:19,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:09:19,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:09:19,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:09:19,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:09:20,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:09:20,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:09:20,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:09:20,452 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:09:20,453 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:09:20,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs4.c [2021-01-06 11:09:20,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7628ec5a6/24fa6fe159ef4c90893f80b8fbdd9852/FLAGb28d5c59b [2021-01-06 11:09:21,207 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:09:21,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs4.c [2021-01-06 11:09:21,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7628ec5a6/24fa6fe159ef4c90893f80b8fbdd9852/FLAGb28d5c59b [2021-01-06 11:09:21,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7628ec5a6/24fa6fe159ef4c90893f80b8fbdd9852 [2021-01-06 11:09:21,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:09:21,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:09:21,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:09:21,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:09:21,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:09:21,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f785e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21, skipping insertion in model container [2021-01-06 11:09:21,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:09:21,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 11:09:21,802 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/brs4.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]]] [2021-01-06 11:09:21,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:09:21,838 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 11:09:21,855 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/brs4.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]]] [2021-01-06 11:09:21,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:09:21,886 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:09:21,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21 WrapperNode [2021-01-06 11:09:21,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:09:21,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:09:21,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:09:21,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:09:21,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:09:21,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:09:21,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:09:21,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:09:21,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... [2021-01-06 11:09:21,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:09:21,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:09:21,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:09:21,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:09:21,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:09:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:09:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:09:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 11:09:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-06 11:09:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:09:22,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:09:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 11:09:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 11:09:22,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:09:22,613 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-06 11:09:22,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:09:22 BoogieIcfgContainer [2021-01-06 11:09:22,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:09:22,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:09:22,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:09:22,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:09:22,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:09:21" (1/3) ... [2021-01-06 11:09:22,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f910571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:09:22, skipping insertion in model container [2021-01-06 11:09:22,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:09:21" (2/3) ... [2021-01-06 11:09:22,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f910571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:09:22, skipping insertion in model container [2021-01-06 11:09:22,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:09:22" (3/3) ... [2021-01-06 11:09:22,642 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4.c [2021-01-06 11:09:22,649 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:09:22,653 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:09:22,676 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:09:22,708 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:09:22,708 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:09:22,708 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:09:22,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:09:22,709 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:09:22,709 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:09:22,709 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:09:22,709 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:09:22,726 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-01-06 11:09:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 11:09:22,733 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:22,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:22,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:22,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:22,742 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2021-01-06 11:09:22,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:22,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051224648] [2021-01-06 11:09:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:22,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051224648] [2021-01-06 11:09:22,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:09:22,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 11:09:22,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372282540] [2021-01-06 11:09:22,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 11:09:22,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:22,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 11:09:22,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 11:09:22,978 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2021-01-06 11:09:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:23,000 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-01-06 11:09:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 11:09:23,002 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 11:09:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:23,013 INFO L225 Difference]: With dead ends: 36 [2021-01-06 11:09:23,014 INFO L226 Difference]: Without dead ends: 16 [2021-01-06 11:09:23,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 11:09:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-06 11:09:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-01-06 11:09:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 11:09:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-01-06 11:09:23,061 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2021-01-06 11:09:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:23,062 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-01-06 11:09:23,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 11:09:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-01-06 11:09:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 11:09:23,063 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:23,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:23,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:09:23,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:23,065 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2021-01-06 11:09:23,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:23,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086814820] [2021-01-06 11:09:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:23,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086814820] [2021-01-06 11:09:23,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:09:23,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 11:09:23,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890533566] [2021-01-06 11:09:23,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 11:09:23,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:23,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 11:09:23,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 11:09:23,178 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2021-01-06 11:09:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:23,292 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-01-06 11:09:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 11:09:23,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 11:09:23,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:23,295 INFO L225 Difference]: With dead ends: 33 [2021-01-06 11:09:23,295 INFO L226 Difference]: Without dead ends: 22 [2021-01-06 11:09:23,296 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 [2021-01-06 11:09:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-06 11:09:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-01-06 11:09:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 11:09:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-01-06 11:09:23,303 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2021-01-06 11:09:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:23,304 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-01-06 11:09:23,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 11:09:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-01-06 11:09:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:09:23,305 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:23,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:23,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 11:09:23,306 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:23,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2021-01-06 11:09:23,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:23,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561636497] [2021-01-06 11:09:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 11:09:23,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561636497] [2021-01-06 11:09:23,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:09:23,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 11:09:23,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973915758] [2021-01-06 11:09:23,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 11:09:23,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:23,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 11:09:23,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 11:09:23,473 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2021-01-06 11:09:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:23,533 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-01-06 11:09:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 11:09:23,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 11:09:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:23,534 INFO L225 Difference]: With dead ends: 27 [2021-01-06 11:09:23,535 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 11:09:23,535 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 [2021-01-06 11:09:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 11:09:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-01-06 11:09:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 11:09:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-01-06 11:09:23,541 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2021-01-06 11:09:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:23,541 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-01-06 11:09:23,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 11:09:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-01-06 11:09:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 11:09:23,542 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:23,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:23,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 11:09:23,543 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:23,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2021-01-06 11:09:23,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:23,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530982997] [2021-01-06 11:09:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:23,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530982997] [2021-01-06 11:09:23,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702211173] [2021-01-06 11:09:23,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:23,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-06 11:09:23,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:23,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:23,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-01-06 11:09:23,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673021813] [2021-01-06 11:09:23,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 11:09:23,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 11:09:23,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-01-06 11:09:23,849 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2021-01-06 11:09:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:23,977 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-01-06 11:09:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 11:09:23,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2021-01-06 11:09:23,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:23,979 INFO L225 Difference]: With dead ends: 43 [2021-01-06 11:09:23,979 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 11:09:23,980 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 [2021-01-06 11:09:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 11:09:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-01-06 11:09:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 11:09:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-01-06 11:09:23,986 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2021-01-06 11:09:23,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:23,986 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-01-06 11:09:23,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 11:09:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-01-06 11:09:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 11:09:23,990 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:23,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:24,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:24,192 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:24,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:24,194 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2021-01-06 11:09:24,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:24,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045566581] [2021-01-06 11:09:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:24,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045566581] [2021-01-06 11:09:24,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382630215] [2021-01-06 11:09:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:24,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 11:09:24,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:24,956 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:09:24,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:24,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:24,968 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:24,968 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-06 11:09:25,044 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-06 11:09:25,045 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:25,051 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:25,052 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:25,053 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2021-01-06 11:09:25,132 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-06 11:09:25,134 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:25,145 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:25,146 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:25,146 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2021-01-06 11:09:25,257 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2021-01-06 11:09:25,260 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:25,269 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:25,274 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 11:09:25,274 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:30 [2021-01-06 11:09:25,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:25,383 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:25,390 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:25,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:25,412 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:25,416 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:25,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:25,433 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:25,447 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:09:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:25,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:25,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-01-06 11:09:25,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983312523] [2021-01-06 11:09:25,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 11:09:25,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:25,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 11:09:25,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-01-06 11:09:25,493 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 23 states. [2021-01-06 11:09:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:26,021 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2021-01-06 11:09:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 11:09:26,022 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2021-01-06 11:09:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:26,023 INFO L225 Difference]: With dead ends: 50 [2021-01-06 11:09:26,023 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 11:09:26,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2021-01-06 11:09:26,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 11:09:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-01-06 11:09:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 11:09:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-01-06 11:09:26,031 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-01-06 11:09:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:26,031 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-01-06 11:09:26,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 11:09:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-01-06 11:09:26,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 11:09:26,032 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:26,032 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:26,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:26,246 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:26,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2021-01-06 11:09:26,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:26,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274805627] [2021-01-06 11:09:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:26,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274805627] [2021-01-06 11:09:26,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400383496] [2021-01-06 11:09:26,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:26,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 11:09:26,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:09:26,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-06 11:09:26,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:26,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:26,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-01-06 11:09:26,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070618029] [2021-01-06 11:09:26,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 11:09:26,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:26,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 11:09:26,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-01-06 11:09:26,565 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 13 states. [2021-01-06 11:09:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:26,792 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2021-01-06 11:09:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 11:09:26,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2021-01-06 11:09:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:26,794 INFO L225 Difference]: With dead ends: 62 [2021-01-06 11:09:26,794 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 11:09:26,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-06 11:09:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 11:09:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2021-01-06 11:09:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-06 11:09:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-01-06 11:09:26,805 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 26 [2021-01-06 11:09:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:26,805 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-01-06 11:09:26,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 11:09:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-01-06 11:09:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 11:09:26,806 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:26,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:27,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:27,020 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:27,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:27,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1198950171, now seen corresponding path program 3 times [2021-01-06 11:09:27,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:27,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621216926] [2021-01-06 11:09:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:28,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621216926] [2021-01-06 11:09:28,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997038685] [2021-01-06 11:09:28,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:28,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 11:09:28,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:09:28,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 11:09:28,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:28,385 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:09:28,388 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:28,392 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:28,393 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:28,394 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-06 11:09:28,434 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 11:09:28,435 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:28,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:28,442 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:28,442 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 11:09:28,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:28,571 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-01-06 11:09:28,573 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:28,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:28,586 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:28,586 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2021-01-06 11:09:28,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:28,900 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-01-06 11:09:28,902 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:28,919 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:28,922 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 11:09:28,922 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:49 [2021-01-06 11:09:29,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:29,128 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:29,128 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 86 [2021-01-06 11:09:29,132 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:29,171 INFO L625 ElimStorePlain]: treesize reduction 51, result has 52.8 percent of original size [2021-01-06 11:09:29,173 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 11:09:29,174 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:57 [2021-01-06 11:09:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:29,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:29,501 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:29,502 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 93 [2021-01-06 11:09:29,506 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:29,551 INFO L625 ElimStorePlain]: treesize reduction 76, result has 43.3 percent of original size [2021-01-06 11:09:29,560 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 11:09:29,560 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:58 [2021-01-06 11:09:29,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:29,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:29,952 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 11:09:29,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:09:29,964 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:29,967 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:29,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:29,974 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:29,976 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 11:09:29,980 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:09:29,983 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 11:09:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 11:09:30,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:30,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2021-01-06 11:09:30,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341740324] [2021-01-06 11:09:30,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-06 11:09:30,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:30,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-06 11:09:30,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 11:09:30,044 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 38 states. [2021-01-06 11:09:32,421 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2021-01-06 11:09:32,637 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 44 [2021-01-06 11:09:32,818 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2021-01-06 11:09:33,110 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2021-01-06 11:09:34,220 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2021-01-06 11:09:34,404 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 40 [2021-01-06 11:09:35,355 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 43 [2021-01-06 11:09:35,667 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-01-06 11:09:37,097 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 51 [2021-01-06 11:09:37,546 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2021-01-06 11:09:37,748 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-01-06 11:09:38,000 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2021-01-06 11:09:38,269 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-01-06 11:09:38,507 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2021-01-06 11:09:39,067 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-01-06 11:09:39,301 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-01-06 11:09:39,921 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2021-01-06 11:09:40,100 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-01-06 11:09:40,268 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2021-01-06 11:09:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:40,304 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2021-01-06 11:09:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-06 11:09:40,305 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 29 [2021-01-06 11:09:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:40,317 INFO L225 Difference]: With dead ends: 85 [2021-01-06 11:09:40,317 INFO L226 Difference]: Without dead ends: 69 [2021-01-06 11:09:40,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=842, Invalid=4858, Unknown=0, NotChecked=0, Total=5700 [2021-01-06 11:09:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-06 11:09:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 37. [2021-01-06 11:09:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 11:09:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-01-06 11:09:40,349 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 29 [2021-01-06 11:09:40,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:40,349 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-01-06 11:09:40,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-06 11:09:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-01-06 11:09:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 11:09:40,356 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:40,356 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:40,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:40,558 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:40,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1722173266, now seen corresponding path program 4 times [2021-01-06 11:09:40,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:40,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952827112] [2021-01-06 11:09:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:40,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952827112] [2021-01-06 11:09:40,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898621620] [2021-01-06 11:09:40,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:40,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 11:09:40,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:09:40,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 11:09:40,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:40,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:40,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-01-06 11:09:40,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905508676] [2021-01-06 11:09:40,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 11:09:40,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:40,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 11:09:40,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-06 11:09:40,879 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 16 states. [2021-01-06 11:09:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:41,224 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-01-06 11:09:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 11:09:41,224 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2021-01-06 11:09:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:41,225 INFO L225 Difference]: With dead ends: 86 [2021-01-06 11:09:41,225 INFO L226 Difference]: Without dead ends: 49 [2021-01-06 11:09:41,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2021-01-06 11:09:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-06 11:09:41,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-01-06 11:09:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 11:09:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-01-06 11:09:41,234 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 32 [2021-01-06 11:09:41,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:41,235 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-01-06 11:09:41,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 11:09:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-01-06 11:09:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 11:09:41,236 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:41,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:41,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:41,449 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:41,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:41,450 INFO L82 PathProgramCache]: Analyzing trace with hash 456261758, now seen corresponding path program 5 times [2021-01-06 11:09:41,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:41,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80914958] [2021-01-06 11:09:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:42,499 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-01-06 11:09:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:42,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80914958] [2021-01-06 11:09:42,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383080462] [2021-01-06 11:09:42,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:42,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-06 11:09:42,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:09:42,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 11:09:42,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:42,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:09:42,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:42,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:42,963 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:42,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 11:09:42,984 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 11:09:42,985 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:42,995 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:42,996 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:42,997 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2021-01-06 11:09:43,038 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 [2021-01-06 11:09:43,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,049 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 [2021-01-06 11:09:43,050 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,055 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:43,056 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,076 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:43,077 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,077 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:48, output treesize:37 [2021-01-06 11:09:43,111 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 72 treesize of output 65 [2021-01-06 11:09:43,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,131 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 39 treesize of output 48 [2021-01-06 11:09:43,133 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,139 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:43,140 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,168 INFO L625 ElimStorePlain]: treesize reduction 7, result has 87.5 percent of original size [2021-01-06 11:09:43,169 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,170 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:86, output treesize:49 [2021-01-06 11:09:43,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,246 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 53 treesize of output 58 [2021-01-06 11:09:43,248 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:43,265 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-01-06 11:09:43,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:09:43,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,408 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 74 treesize of output 57 [2021-01-06 11:09:43,410 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,429 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:43,430 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,430 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:61 [2021-01-06 11:09:43,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:09:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:09:43,560 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 74 treesize of output 67 [2021-01-06 11:09:43,563 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,581 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:43,582 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,583 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:67 [2021-01-06 11:09:43,786 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-01-06 11:09:43,788 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:43,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:43,802 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 11:09:43,802 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:40 [2021-01-06 11:09:43,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:43,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:43,887 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:43,889 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 11:09:43,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:43,893 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:09:43,897 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:43,900 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:43,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:43,904 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 11:09:43,907 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:43,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:09:43,911 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:09:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:43,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:43,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 30 [2021-01-06 11:09:43,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645537238] [2021-01-06 11:09:43,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-01-06 11:09:43,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:43,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-01-06 11:09:43,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2021-01-06 11:09:43,965 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 30 states. [2021-01-06 11:09:45,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:45,613 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2021-01-06 11:09:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 11:09:45,614 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 35 [2021-01-06 11:09:45,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:45,614 INFO L225 Difference]: With dead ends: 74 [2021-01-06 11:09:45,614 INFO L226 Difference]: Without dead ends: 42 [2021-01-06 11:09:45,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=288, Invalid=1692, Unknown=0, NotChecked=0, Total=1980 [2021-01-06 11:09:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-06 11:09:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-01-06 11:09:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 11:09:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-01-06 11:09:45,623 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2021-01-06 11:09:45,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:45,624 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-01-06 11:09:45,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-01-06 11:09:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-01-06 11:09:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-06 11:09:45,625 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:45,625 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:45,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:45,840 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:45,841 INFO L82 PathProgramCache]: Analyzing trace with hash 518824043, now seen corresponding path program 6 times [2021-01-06 11:09:45,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:45,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656763762] [2021-01-06 11:09:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:45,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656763762] [2021-01-06 11:09:45,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183057661] [2021-01-06 11:09:45,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:46,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-06 11:09:46,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:09:46,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 11:09:46,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:46,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:46,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2021-01-06 11:09:46,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074294597] [2021-01-06 11:09:46,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 11:09:46,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:46,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 11:09:46,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-01-06 11:09:46,224 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 19 states. [2021-01-06 11:09:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:46,446 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-01-06 11:09:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 11:09:46,447 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2021-01-06 11:09:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:46,448 INFO L225 Difference]: With dead ends: 67 [2021-01-06 11:09:46,448 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 11:09:46,449 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 [2021-01-06 11:09:46,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 11:09:46,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-01-06 11:09:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-06 11:09:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-01-06 11:09:46,457 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 38 [2021-01-06 11:09:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:46,457 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-01-06 11:09:46,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 11:09:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-01-06 11:09:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 11:09:46,458 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:46,459 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:46,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 11:09:46,672 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash 534813113, now seen corresponding path program 7 times [2021-01-06 11:09:46,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:46,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115100220] [2021-01-06 11:09:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:49,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115100220] [2021-01-06 11:09:49,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479959489] [2021-01-06 11:09:49,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:49,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 11:09:49,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:49,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:09:49,336 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:49,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:49,340 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:49,341 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-06 11:09:49,441 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 11:09:49,443 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:49,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:49,451 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:49,451 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 11:09:49,592 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:49,593 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 [2021-01-06 11:09:49,594 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:49,617 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2021-01-06 11:09:49,618 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:49,619 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2021-01-06 11:09:49,807 INFO L348 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2021-01-06 11:09:49,808 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 [2021-01-06 11:09:49,810 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:49,844 INFO L625 ElimStorePlain]: treesize reduction 22, result has 64.5 percent of original size [2021-01-06 11:09:49,845 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:49,845 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2021-01-06 11:09:50,130 INFO L348 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2021-01-06 11:09:50,135 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 46 [2021-01-06 11:09:50,138 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:50,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:50,154 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:50,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:44 [2021-01-06 11:09:50,340 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-01-06 11:09:50,341 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 [2021-01-06 11:09:50,344 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:50,365 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:50,366 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:50,366 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2021-01-06 11:09:50,643 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2021-01-06 11:09:50,644 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 [2021-01-06 11:09:50,648 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:50,702 INFO L625 ElimStorePlain]: treesize reduction 78, result has 44.3 percent of original size [2021-01-06 11:09:50,703 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:50,704 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2021-01-06 11:09:50,959 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2021-01-06 11:09:50,960 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 [2021-01-06 11:09:50,964 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:51,008 INFO L625 ElimStorePlain]: treesize reduction 84, result has 42.5 percent of original size [2021-01-06 11:09:51,009 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:51,010 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2021-01-06 11:09:51,266 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2021-01-06 11:09:51,267 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 [2021-01-06 11:09:51,271 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:51,324 INFO L625 ElimStorePlain]: treesize reduction 96, result has 39.2 percent of original size [2021-01-06 11:09:51,325 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:09:51,325 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2021-01-06 11:09:51,517 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-01-06 11:09:51,518 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 67 treesize of output 61 [2021-01-06 11:09:51,521 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:09:51,537 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:09:51,539 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 11:09:51,539 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:74, output treesize:55 [2021-01-06 11:09:51,680 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:51,686 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:51,688 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:51,689 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 11:09:51,693 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:51,695 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 11:09:51,705 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:09:51,707 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:51,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:51,710 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 11:09:51,716 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:09:51,717 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 11:09:51,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 11:09:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:51,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:51,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20] total 46 [2021-01-06 11:09:51,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909781795] [2021-01-06 11:09:51,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-06 11:09:51,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:51,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-06 11:09:51,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 11:09:51,816 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 46 states. [2021-01-06 11:09:53,873 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 38 [2021-01-06 11:09:54,113 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 38 [2021-01-06 11:09:54,429 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 47 [2021-01-06 11:09:54,817 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-01-06 11:09:55,012 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 43 [2021-01-06 11:09:55,276 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2021-01-06 11:09:55,515 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 43 [2021-01-06 11:09:55,814 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 45 [2021-01-06 11:09:56,074 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 42 [2021-01-06 11:09:56,343 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 42 [2021-01-06 11:09:56,672 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 45 [2021-01-06 11:09:56,931 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 44 [2021-01-06 11:09:57,219 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 41 [2021-01-06 11:09:57,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:57,270 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2021-01-06 11:09:57,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-06 11:09:57,271 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 41 [2021-01-06 11:09:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:57,271 INFO L225 Difference]: With dead ends: 77 [2021-01-06 11:09:57,272 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 11:09:57,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=612, Invalid=4644, Unknown=0, NotChecked=0, Total=5256 [2021-01-06 11:09:57,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 11:09:57,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2021-01-06 11:09:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 11:09:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-01-06 11:09:57,283 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 41 [2021-01-06 11:09:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:57,284 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-01-06 11:09:57,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-06 11:09:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-01-06 11:09:57,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 11:09:57,285 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:57,285 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:57,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 11:09:57,500 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash -114935472, now seen corresponding path program 8 times [2021-01-06 11:09:57,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:57,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753791919] [2021-01-06 11:09:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:09:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:57,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753791919] [2021-01-06 11:09:57,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803215704] [2021-01-06 11:09:57,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:57,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 11:09:57,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:09:57,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 11:09:57,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:09:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:09:57,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:09:57,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2021-01-06 11:09:57,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689258249] [2021-01-06 11:09:57,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 11:09:57,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:09:57,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 11:09:57,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-01-06 11:09:57,962 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 22 states. [2021-01-06 11:09:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:09:58,248 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2021-01-06 11:09:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 11:09:58,249 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2021-01-06 11:09:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:09:58,250 INFO L225 Difference]: With dead ends: 76 [2021-01-06 11:09:58,250 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 11:09:58,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2021-01-06 11:09:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 11:09:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-01-06 11:09:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-01-06 11:09:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-01-06 11:09:58,260 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 44 [2021-01-06 11:09:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:09:58,260 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-01-06 11:09:58,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 11:09:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-01-06 11:09:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 11:09:58,261 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:09:58,261 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:09:58,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:09:58,475 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:09:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:09:58,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1230251612, now seen corresponding path program 9 times [2021-01-06 11:09:58,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:09:58,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951471699] [2021-01-06 11:09:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:09:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:10:00,309 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 11:10:00,617 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-01-06 11:10:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:10:01,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951471699] [2021-01-06 11:10:01,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128169109] [2021-01-06 11:10:01,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:10:01,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-06 11:10:01,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:10:01,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 54 conjunts are in the unsatisfiable core [2021-01-06 11:10:01,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:10:01,474 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:10:01,477 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,483 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:01,484 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,484 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 11:10:01,506 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 11:10:01,507 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:01,521 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,521 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2021-01-06 11:10:01,543 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 [2021-01-06 11:10:01,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,560 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 [2021-01-06 11:10:01,566 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,572 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:01,573 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:01,585 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,586 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:47, output treesize:36 [2021-01-06 11:10:01,613 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-01-06 11:10:01,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,636 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2021-01-06 11:10:01,639 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,647 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:01,648 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,665 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:01,666 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,666 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:62, output treesize:44 [2021-01-06 11:10:01,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:01,764 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 46 treesize of output 51 [2021-01-06 11:10:01,766 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,786 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:01,787 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:01,787 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2021-01-06 11:10:02,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,074 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 58 treesize of output 66 [2021-01-06 11:10:02,077 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:02,103 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:02,105 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:02,105 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:71 [2021-01-06 11:10:02,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,579 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 92 [2021-01-06 11:10:02,582 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:02,611 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:02,613 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:02,613 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:107, output treesize:103 [2021-01-06 11:10:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:02,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:02,852 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 91 [2021-01-06 11:10:02,861 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:02,890 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:02,891 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:02,892 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:100 [2021-01-06 11:10:03,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,072 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:03,073 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 102 treesize of output 190 [2021-01-06 11:10:03,078 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:03,158 INFO L625 ElimStorePlain]: treesize reduction 132, result has 43.6 percent of original size [2021-01-06 11:10:03,159 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:03,160 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:102 [2021-01-06 11:10:03,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,549 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-01-06 11:10:03,550 INFO L348 Elim1Store]: treesize reduction 17, result has 91.5 percent of original size [2021-01-06 11:10:03,550 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 11 case distinctions, treesize of input 105 treesize of output 295 [2021-01-06 11:10:03,559 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:03,673 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2021-01-06 11:10:03,674 INFO L625 ElimStorePlain]: treesize reduction 318, result has 26.2 percent of original size [2021-01-06 11:10:03,676 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:03,676 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:128, output treesize:113 [2021-01-06 11:10:03,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,288 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2021-01-06 11:10:04,289 INFO L348 Elim1Store]: treesize reduction 52, result has 84.1 percent of original size [2021-01-06 11:10:04,290 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 116 treesize of output 402 [2021-01-06 11:10:04,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:04,462 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 50 [2021-01-06 11:10:04,463 INFO L625 ElimStorePlain]: treesize reduction 518, result has 19.2 percent of original size [2021-01-06 11:10:04,464 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:04,465 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:123 [2021-01-06 11:10:04,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:04,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:05,083 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:05,084 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 23 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 14 case distinctions, treesize of input 93 treesize of output 266 [2021-01-06 11:10:05,094 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:05,222 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46 [2021-01-06 11:10:05,223 INFO L625 ElimStorePlain]: treesize reduction 410, result has 18.0 percent of original size [2021-01-06 11:10:05,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 11:10:05,232 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:106, output treesize:90 [2021-01-06 11:10:05,785 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:05,787 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:10:05,792 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:05,793 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:10:05,802 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:05,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:05,806 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:10:05,809 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:10:05,814 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:05,823 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:10:05,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2021-01-06 11:10:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:10:05,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:10:05,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 52 [2021-01-06 11:10:05,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530163971] [2021-01-06 11:10:05,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-01-06 11:10:05,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:10:05,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-01-06 11:10:05,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2346, Unknown=0, NotChecked=0, Total=2652 [2021-01-06 11:10:05,944 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 52 states. [2021-01-06 11:10:07,796 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2021-01-06 11:10:08,030 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-01-06 11:10:08,273 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-01-06 11:10:08,569 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2021-01-06 11:10:09,067 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2021-01-06 11:10:09,235 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2021-01-06 11:10:09,468 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-01-06 11:10:09,681 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2021-01-06 11:10:09,870 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2021-01-06 11:10:10,157 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2021-01-06 11:10:10,406 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2021-01-06 11:10:10,704 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 80 [2021-01-06 11:10:10,966 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 53 [2021-01-06 11:10:11,622 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-01-06 11:10:13,432 WARN L197 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 111 DAG size of output: 80 [2021-01-06 11:10:13,787 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-01-06 11:10:14,018 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-01-06 11:10:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:10:14,043 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-01-06 11:10:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-01-06 11:10:14,044 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 47 [2021-01-06 11:10:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:10:14,045 INFO L225 Difference]: With dead ends: 111 [2021-01-06 11:10:14,045 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 11:10:14,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=797, Invalid=6513, Unknown=0, NotChecked=0, Total=7310 [2021-01-06 11:10:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 11:10:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-01-06 11:10:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 11:10:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2021-01-06 11:10:14,055 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 47 [2021-01-06 11:10:14,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:10:14,055 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2021-01-06 11:10:14,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-01-06 11:10:14,055 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2021-01-06 11:10:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 11:10:14,056 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:10:14,056 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:10:14,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:10:14,262 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:10:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:10:14,263 INFO L82 PathProgramCache]: Analyzing trace with hash 282343897, now seen corresponding path program 10 times [2021-01-06 11:10:14,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:10:14,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295174619] [2021-01-06 11:10:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:10:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:10:15,935 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-01-06 11:10:16,166 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-01-06 11:10:16,334 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-01-06 11:10:16,499 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-01-06 11:10:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:10:17,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295174619] [2021-01-06 11:10:17,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430826405] [2021-01-06 11:10:17,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:10:17,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 11:10:17,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:10:17,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 53 conjunts are in the unsatisfiable core [2021-01-06 11:10:17,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:10:17,776 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:10:17,778 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:17,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:17,783 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:17,783 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-06 11:10:17,889 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 11:10:17,890 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:17,896 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:17,897 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:17,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 11:10:18,042 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:18,043 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 [2021-01-06 11:10:18,046 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:18,073 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2021-01-06 11:10:18,074 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:18,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2021-01-06 11:10:18,284 INFO L348 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2021-01-06 11:10:18,284 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 [2021-01-06 11:10:18,289 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:18,323 INFO L625 ElimStorePlain]: treesize reduction 22, result has 64.5 percent of original size [2021-01-06 11:10:18,324 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:18,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2021-01-06 11:10:18,588 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2021-01-06 11:10:18,589 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 [2021-01-06 11:10:18,597 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:18,651 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.1 percent of original size [2021-01-06 11:10:18,652 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:18,653 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2021-01-06 11:10:18,989 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-01-06 11:10:18,990 INFO L348 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2021-01-06 11:10:18,991 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 [2021-01-06 11:10:18,997 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:19,060 INFO L625 ElimStorePlain]: treesize reduction 66, result has 46.8 percent of original size [2021-01-06 11:10:19,061 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:19,062 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2021-01-06 11:10:19,451 INFO L348 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-01-06 11:10:19,452 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 70 [2021-01-06 11:10:19,454 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:19,476 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:19,477 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:19,477 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:66, output treesize:62 [2021-01-06 11:10:19,720 INFO L348 Elim1Store]: treesize reduction 180, result has 0.6 percent of original size [2021-01-06 11:10:19,720 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2021-01-06 11:10:19,723 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:19,755 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:19,756 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:19,756 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:72 [2021-01-06 11:10:20,147 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2021-01-06 11:10:20,148 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-01-06 11:10:20,149 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 180 [2021-01-06 11:10:20,156 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:20,228 INFO L625 ElimStorePlain]: treesize reduction 96, result has 45.5 percent of original size [2021-01-06 11:10:20,229 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:20,229 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:80 [2021-01-06 11:10:20,562 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2021-01-06 11:10:20,563 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-01-06 11:10:20,564 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 180 [2021-01-06 11:10:20,568 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:20,646 INFO L625 ElimStorePlain]: treesize reduction 114, result has 41.2 percent of original size [2021-01-06 11:10:20,647 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:20,647 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:80 [2021-01-06 11:10:21,026 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2021-01-06 11:10:21,027 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-01-06 11:10:21,028 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 180 [2021-01-06 11:10:21,032 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:21,118 INFO L625 ElimStorePlain]: treesize reduction 112, result has 42.3 percent of original size [2021-01-06 11:10:21,119 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:21,119 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:82 [2021-01-06 11:10:21,487 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2021-01-06 11:10:21,488 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-01-06 11:10:21,489 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 180 [2021-01-06 11:10:21,494 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:21,579 INFO L625 ElimStorePlain]: treesize reduction 124, result has 39.8 percent of original size [2021-01-06 11:10:21,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:21,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:82 [2021-01-06 11:10:21,969 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2021-01-06 11:10:21,970 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2021-01-06 11:10:21,971 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 93 treesize of output 180 [2021-01-06 11:10:21,976 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:22,058 INFO L625 ElimStorePlain]: treesize reduction 138, result has 38.9 percent of original size [2021-01-06 11:10:22,059 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:22,060 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:103, output treesize:88 [2021-01-06 11:10:22,332 INFO L348 Elim1Store]: treesize reduction 180, result has 0.6 percent of original size [2021-01-06 11:10:22,333 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 91 treesize of output 85 [2021-01-06 11:10:22,335 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:22,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:22,359 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 11:10:22,359 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:98, output treesize:75 [2021-01-06 11:10:22,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:22,516 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:22,519 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:10:22,520 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 11:10:22,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:10:22,526 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 11:10:22,532 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:22,534 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:10:22,536 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:10:22,537 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 11:10:22,542 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:10:22,543 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 11:10:22,547 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 11:10:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:10:22,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:10:22,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27] total 59 [2021-01-06 11:10:22,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317460791] [2021-01-06 11:10:22,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-01-06 11:10:22,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:10:22,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-01-06 11:10:22,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=3099, Unknown=0, NotChecked=0, Total=3422 [2021-01-06 11:10:22,675 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 59 states. [2021-01-06 11:10:25,209 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2021-01-06 11:10:25,435 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 42 [2021-01-06 11:10:25,718 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 46 [2021-01-06 11:10:26,149 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 48 [2021-01-06 11:10:26,397 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2021-01-06 11:10:26,837 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 50 [2021-01-06 11:10:27,106 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 46 [2021-01-06 11:10:27,360 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 47 [2021-01-06 11:10:27,651 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2021-01-06 11:10:27,901 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 44 [2021-01-06 11:10:28,147 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 45 [2021-01-06 11:10:28,494 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 47 [2021-01-06 11:10:28,845 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2021-01-06 11:10:29,156 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2021-01-06 11:10:29,443 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2021-01-06 11:10:29,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:10:29,503 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-01-06 11:10:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-06 11:10:29,505 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 53 [2021-01-06 11:10:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:10:29,506 INFO L225 Difference]: With dead ends: 65 [2021-01-06 11:10:29,506 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 11:10:29,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2647 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=731, Invalid=7459, Unknown=0, NotChecked=0, Total=8190 [2021-01-06 11:10:29,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 11:10:29,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2021-01-06 11:10:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-06 11:10:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-01-06 11:10:29,519 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 53 [2021-01-06 11:10:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:10:29,520 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-01-06 11:10:29,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2021-01-06 11:10:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-01-06 11:10:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 11:10:29,521 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:10:29,521 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:10:29,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 11:10:29,725 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:10:29,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:10:29,726 INFO L82 PathProgramCache]: Analyzing trace with hash -937614032, now seen corresponding path program 11 times [2021-01-06 11:10:29,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:10:29,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913974898] [2021-01-06 11:10:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:10:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:10:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:10:29,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913974898] [2021-01-06 11:10:29,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139587334] [2021-01-06 11:10:29,998 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:10:30,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-06 11:10:30,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:10:30,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-06 11:10:30,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:10:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:10:30,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:10:30,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2021-01-06 11:10:30,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815181669] [2021-01-06 11:10:30,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 11:10:30,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:10:30,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 11:10:30,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-01-06 11:10:30,557 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 28 states. [2021-01-06 11:10:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:10:31,545 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2021-01-06 11:10:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-06 11:10:31,547 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2021-01-06 11:10:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:10:31,548 INFO L225 Difference]: With dead ends: 143 [2021-01-06 11:10:31,548 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 11:10:31,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=574, Invalid=1976, Unknown=0, NotChecked=0, Total=2550 [2021-01-06 11:10:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 11:10:31,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-01-06 11:10:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-06 11:10:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2021-01-06 11:10:31,564 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 56 [2021-01-06 11:10:31,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:10:31,565 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2021-01-06 11:10:31,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 11:10:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2021-01-06 11:10:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 11:10:31,566 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:10:31,567 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:10:31,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 11:10:31,784 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:10:31,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:10:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1208754116, now seen corresponding path program 12 times [2021-01-06 11:10:31,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:10:31,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012338658] [2021-01-06 11:10:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:10:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:10:33,055 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-01-06 11:10:33,376 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-01-06 11:10:33,571 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-01-06 11:10:33,757 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-06 11:10:33,926 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-01-06 11:10:34,112 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-06 11:10:34,291 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-06 11:10:34,491 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-01-06 11:10:34,666 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-01-06 11:10:34,972 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-01-06 11:10:35,199 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-01-06 11:10:35,394 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2021-01-06 11:10:36,103 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-01-06 11:10:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 15 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:10:37,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012338658] [2021-01-06 11:10:37,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252000294] [2021-01-06 11:10:37,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:10:37,181 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-01-06 11:10:37,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:10:37,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 67 conjunts are in the unsatisfiable core [2021-01-06 11:10:37,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:10:37,201 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:10:37,202 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:37,211 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,211 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-06 11:10:37,233 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 11:10:37,234 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:37,249 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2021-01-06 11:10:37,285 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 [2021-01-06 11:10:37,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,296 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 [2021-01-06 11:10:37,298 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:37,309 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,322 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:37,324 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,324 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:48, output treesize:37 [2021-01-06 11:10:37,352 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-01-06 11:10:37,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,371 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2021-01-06 11:10:37,373 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:37,382 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:37,398 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,398 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:62, output treesize:44 [2021-01-06 11:10:37,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,510 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 46 treesize of output 51 [2021-01-06 11:10:37,512 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,532 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:37,537 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,537 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2021-01-06 11:10:37,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:37,881 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 78 treesize of output 86 [2021-01-06 11:10:37,883 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,933 INFO L625 ElimStorePlain]: treesize reduction 7, result has 93.1 percent of original size [2021-01-06 11:10:37,935 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:37,935 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:94 [2021-01-06 11:10:38,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,197 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-01-06 11:10:38,198 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:38,199 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 350 [2021-01-06 11:10:38,207 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:38,339 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-01-06 11:10:38,340 INFO L625 ElimStorePlain]: treesize reduction 208, result has 36.8 percent of original size [2021-01-06 11:10:38,343 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:10:38,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:109, output treesize:121 [2021-01-06 11:10:38,776 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 11:10:38,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:38,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,067 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-01-06 11:10:39,068 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:39,069 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 105 treesize of output 472 [2021-01-06 11:10:39,075 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:39,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:39,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:39,113 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 81 [2021-01-06 11:10:39,116 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:39,379 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-01-06 11:10:39,380 INFO L625 ElimStorePlain]: treesize reduction 199, result has 53.2 percent of original size [2021-01-06 11:10:39,382 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-06 11:10:39,382 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:244, output treesize:226 [2021-01-06 11:10:39,616 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-01-06 11:10:39,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:39,624 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:10:39,991 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-01-06 11:10:40,000 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:40,492 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-01-06 11:10:40,507 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:40,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,657 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:40,658 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 19 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 198 [2021-01-06 11:10:40,662 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:40,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:40,695 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 100 [2021-01-06 11:10:40,698 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:40,940 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-01-06 11:10:40,941 INFO L625 ElimStorePlain]: treesize reduction 14, result has 94.7 percent of original size [2021-01-06 11:10:40,945 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-06 11:10:40,945 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:259, output treesize:251 [2021-01-06 11:10:41,200 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-01-06 11:10:41,467 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-01-06 11:10:41,492 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:41,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:41,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:41,568 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 99 [2021-01-06 11:10:41,570 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:41,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:41,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:41,649 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:41,649 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 197 [2021-01-06 11:10:41,654 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:41,904 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-01-06 11:10:41,905 INFO L625 ElimStorePlain]: treesize reduction 22, result has 91.9 percent of original size [2021-01-06 11:10:41,907 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-06 11:10:41,908 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:309, output treesize:251 [2021-01-06 11:10:42,363 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-01-06 11:10:42,382 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:42,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:42,457 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 109 [2021-01-06 11:10:42,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:42,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:42,540 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:42,541 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 207 [2021-01-06 11:10:42,546 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:42,789 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2021-01-06 11:10:42,790 INFO L625 ElimStorePlain]: treesize reduction 42, result has 86.6 percent of original size [2021-01-06 11:10:42,794 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-06 11:10:42,794 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:301, output treesize:271 [2021-01-06 11:10:43,285 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-01-06 11:10:43,486 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:43,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:43,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:43,632 INFO L244 Elim1Store]: Index analysis took 119 ms [2021-01-06 11:10:43,661 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:43,661 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 196 [2021-01-06 11:10:43,665 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:43,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:43,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:43,693 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 98 [2021-01-06 11:10:43,696 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:43,953 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-01-06 11:10:43,954 INFO L625 ElimStorePlain]: treesize reduction 42, result has 85.4 percent of original size [2021-01-06 11:10:43,957 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-06 11:10:43,957 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:301, output treesize:245 [2021-01-06 11:10:44,452 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-01-06 11:10:44,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:44,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:44,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:44,553 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 98 [2021-01-06 11:10:44,556 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:44,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:44,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:44,641 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:44,642 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 133 treesize of output 189 [2021-01-06 11:10:44,646 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:44,902 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-01-06 11:10:44,903 INFO L625 ElimStorePlain]: treesize reduction 50, result has 83.3 percent of original size [2021-01-06 11:10:44,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-06 11:10:44,906 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:301, output treesize:249 [2021-01-06 11:10:45,197 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-01-06 11:10:45,580 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-01-06 11:10:45,600 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:45,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:45,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:45,678 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 93 [2021-01-06 11:10:45,681 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:45,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-06 11:10:45,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:45,773 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:45,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 5 case distinctions, treesize of input 136 treesize of output 173 [2021-01-06 11:10:45,777 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:46,012 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2021-01-06 11:10:46,013 INFO L625 ElimStorePlain]: treesize reduction 8, result has 96.7 percent of original size [2021-01-06 11:10:46,017 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-06 11:10:46,017 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:302, output treesize:231 [2021-01-06 11:10:46,229 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2021-01-06 11:10:46,230 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:46,549 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-01-06 11:10:46,568 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:46,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 107 [2021-01-06 11:10:46,654 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:46,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:46,759 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:46,760 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 229 [2021-01-06 11:10:46,768 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:47,054 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-01-06 11:10:47,055 INFO L625 ElimStorePlain]: treesize reduction 56, result has 83.0 percent of original size [2021-01-06 11:10:47,058 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-06 11:10:47,058 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:293, output treesize:273 [2021-01-06 11:10:47,425 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-01-06 11:10:47,805 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-01-06 11:10:48,207 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-01-06 11:10:48,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 11:10:48,293 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:10:48,294 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 34 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 155 [2021-01-06 11:10:48,298 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:10:48,412 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-01-06 11:10:48,412 INFO L625 ElimStorePlain]: treesize reduction 89, result has 53.4 percent of original size [2021-01-06 11:10:48,416 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 11:10:48,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:128, output treesize:102 [2021-01-06 11:10:55,589 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:55,602 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:10:55,604 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:55,605 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 11:10:55,610 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:55,611 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:55,612 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:10:55,615 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 11:10:55,618 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:10:55,618 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2021-01-06 11:10:55,621 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2021-01-06 11:10:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:10:55,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:10:55,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36] total 65 [2021-01-06 11:10:55,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448537825] [2021-01-06 11:10:55,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-01-06 11:10:55,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:10:55,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-01-06 11:10:55,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=3737, Unknown=1, NotChecked=0, Total=4160 [2021-01-06 11:10:55,789 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 65 states. [2021-01-06 11:10:58,207 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2021-01-06 11:10:58,486 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2021-01-06 11:10:58,856 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2021-01-06 11:10:59,201 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2021-01-06 11:10:59,588 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 59 [2021-01-06 11:11:00,021 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 53 [2021-01-06 11:11:02,558 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 53 [2021-01-06 11:11:02,937 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2021-01-06 11:11:03,399 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2021-01-06 11:11:03,754 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 60 [2021-01-06 11:11:04,237 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2021-01-06 11:11:04,799 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 71 [2021-01-06 11:11:05,279 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 57 [2021-01-06 11:11:05,713 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2021-01-06 11:11:06,015 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2021-01-06 11:11:06,727 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 61 [2021-01-06 11:11:07,168 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 56 [2021-01-06 11:11:07,473 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2021-01-06 11:11:07,886 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 60 [2021-01-06 11:11:08,221 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2021-01-06 11:11:11,290 WARN L197 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-01-06 11:11:11,715 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 62 [2021-01-06 11:11:14,243 WARN L197 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 130 DAG size of output: 62 [2021-01-06 11:11:16,882 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2021-01-06 11:11:17,370 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 73 [2021-01-06 11:11:17,899 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 58 [2021-01-06 11:11:18,363 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 69 [2021-01-06 11:11:18,965 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 90 [2021-01-06 11:11:19,697 WARN L197 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 92 [2021-01-06 11:11:20,174 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2021-01-06 11:11:20,854 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2021-01-06 11:11:21,575 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 66 [2021-01-06 11:11:21,990 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2021-01-06 11:11:22,774 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 76 [2021-01-06 11:11:25,009 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2021-01-06 11:11:25,783 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 81 [2021-01-06 11:11:26,477 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 93 [2021-01-06 11:11:26,897 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-01-06 11:11:27,803 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 98 [2021-01-06 11:11:28,486 WARN L197 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 95 [2021-01-06 11:11:29,350 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 100 [2021-01-06 11:11:31,705 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 64 [2021-01-06 11:11:32,380 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 66 [2021-01-06 11:11:32,828 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-01-06 11:11:33,302 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-01-06 11:11:35,808 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-01-06 11:11:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:11:35,879 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2021-01-06 11:11:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-01-06 11:11:35,880 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 59 [2021-01-06 11:11:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:11:35,881 INFO L225 Difference]: With dead ends: 122 [2021-01-06 11:11:35,881 INFO L226 Difference]: Without dead ends: 116 [2021-01-06 11:11:35,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 25 SyntacticMatches, 9 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4630 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=1393, Invalid=13125, Unknown=2, NotChecked=0, Total=14520 [2021-01-06 11:11:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-01-06 11:11:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 70. [2021-01-06 11:11:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 11:11:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2021-01-06 11:11:35,902 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 59 [2021-01-06 11:11:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:11:35,902 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2021-01-06 11:11:35,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2021-01-06 11:11:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2021-01-06 11:11:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 11:11:35,903 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:11:35,904 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:11:36,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 11:11:36,113 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:11:36,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:11:36,114 INFO L82 PathProgramCache]: Analyzing trace with hash 608223213, now seen corresponding path program 13 times [2021-01-06 11:11:36,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:11:36,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168281214] [2021-01-06 11:11:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:11:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:11:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 95 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:11:36,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168281214] [2021-01-06 11:11:36,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961380396] [2021-01-06 11:11:36,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:11:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:11:36,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 11:11:36,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:11:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:11:37,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:11:37,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2021-01-06 11:11:37,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461439676] [2021-01-06 11:11:37,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-06 11:11:37,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:11:37,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-06 11:11:37,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2021-01-06 11:11:37,278 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 31 states. [2021-01-06 11:11:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:11:38,065 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2021-01-06 11:11:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 11:11:38,067 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2021-01-06 11:11:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:11:38,068 INFO L225 Difference]: With dead ends: 109 [2021-01-06 11:11:38,068 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 11:11:38,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2021-01-06 11:11:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 11:11:38,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2021-01-06 11:11:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 11:11:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2021-01-06 11:11:38,081 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 62 [2021-01-06 11:11:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:11:38,081 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2021-01-06 11:11:38,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-06 11:11:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2021-01-06 11:11:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 11:11:38,082 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:11:38,082 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:11:38,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:11:38,292 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:11:38,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:11:38,294 INFO L82 PathProgramCache]: Analyzing trace with hash 905478775, now seen corresponding path program 14 times [2021-01-06 11:11:38,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:11:38,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572559319] [2021-01-06 11:11:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:11:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:11:39,500 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2021-01-06 11:11:39,847 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2021-01-06 11:11:40,027 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-01-06 11:11:40,268 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2021-01-06 11:11:40,484 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2021-01-06 11:11:40,664 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-01-06 11:11:41,011 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 11:11:41,277 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-06 11:11:42,091 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2021-01-06 11:11:42,389 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-01-06 11:11:42,715 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2021-01-06 11:11:42,990 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2021-01-06 11:11:43,385 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-01-06 11:11:43,744 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2021-01-06 11:11:44,027 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-01-06 11:11:44,269 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-01-06 11:11:44,506 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2021-01-06 11:11:44,737 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2021-01-06 11:11:44,971 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-01-06 11:11:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 24 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:11:46,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572559319] [2021-01-06 11:11:46,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697098509] [2021-01-06 11:11:46,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:11:46,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 11:11:46,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:11:46,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 67 conjunts are in the unsatisfiable core [2021-01-06 11:11:46,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:11:46,454 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:11:46,456 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:46,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:11:46,466 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:46,468 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-06 11:11:46,795 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 11:11:46,797 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:46,814 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:11:46,816 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:46,816 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2021-01-06 11:11:47,096 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-01-06 11:11:47,097 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 [2021-01-06 11:11:47,099 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:47,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:11:47,122 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:47,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2021-01-06 11:11:47,528 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-01-06 11:11:47,529 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2021-01-06 11:11:47,530 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 [2021-01-06 11:11:47,533 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:47,614 INFO L625 ElimStorePlain]: treesize reduction 44, result has 47.6 percent of original size [2021-01-06 11:11:47,615 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:47,615 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2021-01-06 11:11:48,084 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2021-01-06 11:11:48,085 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2021-01-06 11:11:48,086 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 [2021-01-06 11:11:48,092 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:48,200 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2021-01-06 11:11:48,201 INFO L625 ElimStorePlain]: treesize reduction 66, result has 42.6 percent of original size [2021-01-06 11:11:48,203 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:48,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2021-01-06 11:11:48,767 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2021-01-06 11:11:48,768 INFO L348 Elim1Store]: treesize reduction 72, result has 68.6 percent of original size [2021-01-06 11:11:48,769 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 [2021-01-06 11:11:48,775 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:48,900 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2021-01-06 11:11:48,901 INFO L625 ElimStorePlain]: treesize reduction 88, result has 39.7 percent of original size [2021-01-06 11:11:48,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:48,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2021-01-06 11:11:49,591 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2021-01-06 11:11:49,592 INFO L348 Elim1Store]: treesize reduction 120, result has 62.0 percent of original size [2021-01-06 11:11:49,593 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 [2021-01-06 11:11:49,598 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:49,765 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2021-01-06 11:11:49,766 INFO L625 ElimStorePlain]: treesize reduction 110, result has 37.9 percent of original size [2021-01-06 11:11:49,768 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:49,769 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:67 [2021-01-06 11:11:50,605 WARN L197 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2021-01-06 11:11:50,607 INFO L348 Elim1Store]: treesize reduction 180, result has 56.6 percent of original size [2021-01-06 11:11:50,608 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 [2021-01-06 11:11:50,612 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:50,806 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2021-01-06 11:11:50,808 INFO L625 ElimStorePlain]: treesize reduction 132, result has 36.5 percent of original size [2021-01-06 11:11:50,810 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:50,810 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:80, output treesize:76 [2021-01-06 11:11:51,806 WARN L197 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 78 [2021-01-06 11:11:51,808 INFO L348 Elim1Store]: treesize reduction 252, result has 52.1 percent of original size [2021-01-06 11:11:51,808 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 79 treesize of output 306 [2021-01-06 11:11:51,814 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:52,033 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2021-01-06 11:11:52,035 INFO L625 ElimStorePlain]: treesize reduction 154, result has 35.6 percent of original size [2021-01-06 11:11:52,036 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:52,037 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:85 [2021-01-06 11:11:53,019 INFO L348 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-01-06 11:11:53,020 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 [2021-01-06 11:11:53,023 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:53,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:11:53,080 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:53,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:93 [2021-01-06 11:11:53,897 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2021-01-06 11:11:53,899 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2021-01-06 11:11:53,900 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 [2021-01-06 11:11:53,911 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:54,072 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2021-01-06 11:11:54,073 INFO L625 ElimStorePlain]: treesize reduction 166, result has 38.3 percent of original size [2021-01-06 11:11:54,075 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:54,075 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:103 [2021-01-06 11:11:54,842 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2021-01-06 11:11:54,844 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2021-01-06 11:11:54,844 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 232 [2021-01-06 11:11:54,851 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:55,004 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2021-01-06 11:11:55,006 INFO L625 ElimStorePlain]: treesize reduction 148, result has 40.6 percent of original size [2021-01-06 11:11:55,008 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:55,008 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:101 [2021-01-06 11:11:55,862 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2021-01-06 11:11:55,864 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2021-01-06 11:11:55,864 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 [2021-01-06 11:11:55,873 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:56,040 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2021-01-06 11:11:56,042 INFO L625 ElimStorePlain]: treesize reduction 124, result has 44.9 percent of original size [2021-01-06 11:11:56,043 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:56,044 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:101 [2021-01-06 11:11:56,851 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2021-01-06 11:11:56,852 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2021-01-06 11:11:56,853 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 [2021-01-06 11:11:56,859 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:57,038 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2021-01-06 11:11:57,040 INFO L625 ElimStorePlain]: treesize reduction 166, result has 38.3 percent of original size [2021-01-06 11:11:57,042 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:57,042 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:103 [2021-01-06 11:11:57,908 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2021-01-06 11:11:57,910 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2021-01-06 11:11:57,911 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 232 [2021-01-06 11:11:57,918 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:58,110 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2021-01-06 11:11:58,112 INFO L625 ElimStorePlain]: treesize reduction 166, result has 40.1 percent of original size [2021-01-06 11:11:58,114 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:58,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:111 [2021-01-06 11:11:58,971 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2021-01-06 11:11:58,973 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2021-01-06 11:11:58,973 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 232 [2021-01-06 11:11:58,981 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:11:59,158 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-01-06 11:11:59,160 INFO L625 ElimStorePlain]: treesize reduction 180, result has 39.4 percent of original size [2021-01-06 11:11:59,161 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:11:59,162 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:117 [2021-01-06 11:12:00,005 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2021-01-06 11:12:00,007 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2021-01-06 11:12:00,008 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 111 treesize of output 232 [2021-01-06 11:12:00,017 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:00,187 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2021-01-06 11:12:00,189 INFO L625 ElimStorePlain]: treesize reduction 180, result has 37.7 percent of original size [2021-01-06 11:12:00,191 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:00,191 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:109 [2021-01-06 11:12:00,752 INFO L348 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-01-06 11:12:00,753 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 109 treesize of output 109 [2021-01-06 11:12:00,757 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:00,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:12:00,819 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 11:12:00,820 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:119, output treesize:104 [2021-01-06 11:12:01,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:12:01,150 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:12:01,155 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:12:01,156 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 11:12:01,162 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:12:01,164 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:12:01,165 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:12:01,167 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:12:01,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:12:01,172 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-06 11:12:01,174 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2021-01-06 11:12:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:12:01,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:12:01,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 35] total 75 [2021-01-06 11:12:01,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871278446] [2021-01-06 11:12:01,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-01-06 11:12:01,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:12:01,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-01-06 11:12:01,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=5118, Unknown=0, NotChecked=0, Total=5550 [2021-01-06 11:12:01,422 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 75 states. [2021-01-06 11:12:03,769 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2021-01-06 11:12:04,287 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-01-06 11:12:04,597 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-01-06 11:12:05,180 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-01-06 11:12:05,522 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2021-01-06 11:12:05,842 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2021-01-06 11:12:06,184 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2021-01-06 11:12:06,566 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-01-06 11:12:06,918 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2021-01-06 11:12:07,302 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2021-01-06 11:12:07,724 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-01-06 11:12:08,094 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2021-01-06 11:12:08,506 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2021-01-06 11:12:09,036 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 52 [2021-01-06 11:12:09,554 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 54 [2021-01-06 11:12:10,065 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 56 [2021-01-06 11:12:10,613 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 56 [2021-01-06 11:12:10,924 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2021-01-06 11:12:11,898 WARN L197 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 58 [2021-01-06 11:12:12,651 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-01-06 11:12:12,974 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2021-01-06 11:12:13,437 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2021-01-06 11:12:13,839 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 56 [2021-01-06 11:12:14,394 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-01-06 11:12:14,993 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 58 [2021-01-06 11:12:15,658 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 55 [2021-01-06 11:12:16,085 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-01-06 11:12:16,638 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 57 [2021-01-06 11:12:17,046 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-01-06 11:12:17,658 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 57 [2021-01-06 11:12:18,123 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2021-01-06 11:12:18,683 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 57 [2021-01-06 11:12:19,217 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 55 [2021-01-06 11:12:19,649 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-01-06 11:12:20,280 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2021-01-06 11:12:20,829 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 57 [2021-01-06 11:12:21,389 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2021-01-06 11:12:22,232 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2021-01-06 11:12:22,794 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2021-01-06 11:12:23,550 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 61 [2021-01-06 11:12:24,084 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2021-01-06 11:12:24,882 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2021-01-06 11:12:25,642 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-01-06 11:12:26,203 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-01-06 11:12:27,092 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-01-06 11:12:27,600 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 54 [2021-01-06 11:12:28,023 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-01-06 11:12:28,495 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-01-06 11:12:29,090 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2021-01-06 11:12:29,734 WARN L197 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-01-06 11:12:30,132 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-01-06 11:12:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:12:30,164 INFO L93 Difference]: Finished difference Result 164 states and 178 transitions. [2021-01-06 11:12:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-01-06 11:12:30,166 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 65 [2021-01-06 11:12:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:12:30,167 INFO L225 Difference]: With dead ends: 164 [2021-01-06 11:12:30,167 INFO L226 Difference]: Without dead ends: 112 [2021-01-06 11:12:30,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5942 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=1433, Invalid=16927, Unknown=0, NotChecked=0, Total=18360 [2021-01-06 11:12:30,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-01-06 11:12:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 70. [2021-01-06 11:12:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 11:12:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2021-01-06 11:12:30,188 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 65 [2021-01-06 11:12:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:12:30,188 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2021-01-06 11:12:30,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2021-01-06 11:12:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2021-01-06 11:12:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 11:12:30,189 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:12:30,189 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:12:30,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-06 11:12:30,403 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:12:30,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:12:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash 24883154, now seen corresponding path program 15 times [2021-01-06 11:12:30,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:12:30,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464715900] [2021-01-06 11:12:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:12:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:12:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 120 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:12:30,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464715900] [2021-01-06 11:12:30,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640847328] [2021-01-06 11:12:30,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:12:31,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-01-06 11:12:31,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:12:31,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 11:12:31,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:12:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:12:31,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:12:31,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2021-01-06 11:12:31,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643620510] [2021-01-06 11:12:31,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-06 11:12:31,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:12:31,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-06 11:12:31,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 11:12:31,928 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 34 states. [2021-01-06 11:12:32,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:12:32,774 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2021-01-06 11:12:32,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 11:12:32,776 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 68 [2021-01-06 11:12:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:12:32,777 INFO L225 Difference]: With dead ends: 112 [2021-01-06 11:12:32,777 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 11:12:32,778 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 [2021-01-06 11:12:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 11:12:32,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2021-01-06 11:12:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 11:12:32,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-01-06 11:12:32,791 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2021-01-06 11:12:32,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:12:32,791 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-01-06 11:12:32,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-06 11:12:32,791 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-01-06 11:12:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-01-06 11:12:32,792 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:12:32,792 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:12:32,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:12:32,993 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:12:32,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:12:32,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1838881818, now seen corresponding path program 16 times [2021-01-06 11:12:32,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:12:32,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121261883] [2021-01-06 11:12:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:12:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:12:34,225 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2021-01-06 11:12:34,403 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2021-01-06 11:12:34,645 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2021-01-06 11:12:34,857 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-01-06 11:12:35,182 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2021-01-06 11:12:35,452 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2021-01-06 11:12:35,769 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-01-06 11:12:36,020 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-01-06 11:12:36,199 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-01-06 11:12:36,542 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-06 11:12:36,855 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-01-06 11:12:37,204 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-01-06 11:12:37,399 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-01-06 11:12:37,812 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-01-06 11:12:38,198 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2021-01-06 11:12:38,515 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2021-01-06 11:12:38,818 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2021-01-06 11:12:39,123 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2021-01-06 11:12:39,415 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2021-01-06 11:12:39,745 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-01-06 11:12:40,073 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-01-06 11:12:40,439 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-01-06 11:12:40,706 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-01-06 11:12:40,978 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-01-06 11:12:41,217 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2021-01-06 11:12:41,479 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-01-06 11:12:41,788 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-01-06 11:12:42,095 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-01-06 11:12:42,406 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2021-01-06 11:12:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 37 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:12:43,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121261883] [2021-01-06 11:12:43,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968221985] [2021-01-06 11:12:43,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 11:12:43,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 11:12:43,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 11:12:43,455 WARN L261 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 71 conjunts are in the unsatisfiable core [2021-01-06 11:12:43,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 11:12:43,481 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-06 11:12:43,485 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:43,496 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:12:43,497 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:43,497 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-06 11:12:43,802 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-06 11:12:43,804 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:43,824 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:12:43,826 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:43,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 11:12:44,198 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:12:44,199 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 [2021-01-06 11:12:44,202 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:44,270 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2021-01-06 11:12:44,271 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:44,272 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2021-01-06 11:12:44,777 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-01-06 11:12:44,779 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2021-01-06 11:12:44,779 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 [2021-01-06 11:12:44,783 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:44,873 INFO L625 ElimStorePlain]: treesize reduction 44, result has 45.7 percent of original size [2021-01-06 11:12:44,874 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:44,875 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2021-01-06 11:12:45,497 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2021-01-06 11:12:45,499 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2021-01-06 11:12:45,500 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 [2021-01-06 11:12:45,504 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:45,639 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2021-01-06 11:12:45,641 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.1 percent of original size [2021-01-06 11:12:45,643 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:45,643 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2021-01-06 11:12:46,387 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-01-06 11:12:46,388 INFO L348 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2021-01-06 11:12:46,389 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 [2021-01-06 11:12:46,396 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:46,548 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2021-01-06 11:12:46,550 INFO L625 ElimStorePlain]: treesize reduction 66, result has 46.8 percent of original size [2021-01-06 11:12:46,552 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:46,553 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2021-01-06 11:12:47,419 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 49 [2021-01-06 11:12:47,420 INFO L348 Elim1Store]: treesize reduction 222, result has 39.0 percent of original size [2021-01-06 11:12:47,421 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 [2021-01-06 11:12:47,426 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:47,581 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2021-01-06 11:12:47,582 INFO L625 ElimStorePlain]: treesize reduction 66, result has 51.5 percent of original size [2021-01-06 11:12:47,585 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:47,585 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2021-01-06 11:12:48,334 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 54 [2021-01-06 11:12:48,335 INFO L348 Elim1Store]: treesize reduction 342, result has 31.0 percent of original size [2021-01-06 11:12:48,336 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 [2021-01-06 11:12:48,341 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:48,477 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-01-06 11:12:48,478 INFO L625 ElimStorePlain]: treesize reduction 66, result has 55.4 percent of original size [2021-01-06 11:12:48,481 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:48,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:86, output treesize:82 [2021-01-06 11:12:49,441 WARN L197 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 78 [2021-01-06 11:12:49,443 INFO L348 Elim1Store]: treesize reduction 252, result has 52.1 percent of original size [2021-01-06 11:12:49,444 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 79 treesize of output 306 [2021-01-06 11:12:49,453 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:49,662 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2021-01-06 11:12:49,663 INFO L625 ElimStorePlain]: treesize reduction 154, result has 34.7 percent of original size [2021-01-06 11:12:49,667 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:49,668 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:86, output treesize:82 [2021-01-06 11:12:50,662 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 45 [2021-01-06 11:12:50,663 INFO L348 Elim1Store]: treesize reduction 544, result has 11.8 percent of original size [2021-01-06 11:12:50,664 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-01-06 11:12:50,667 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:50,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:12:50,715 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:50,716 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2021-01-06 11:12:51,230 INFO L348 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2021-01-06 11:12:51,231 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2021-01-06 11:12:51,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:51,293 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:12:51,295 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:51,296 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:103, output treesize:99 [2021-01-06 11:12:52,286 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2021-01-06 11:12:52,287 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2021-01-06 11:12:52,288 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 258 [2021-01-06 11:12:52,296 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:52,468 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2021-01-06 11:12:52,470 INFO L625 ElimStorePlain]: treesize reduction 138, result has 43.7 percent of original size [2021-01-06 11:12:52,472 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:52,473 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2021-01-06 11:12:53,358 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2021-01-06 11:12:53,360 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2021-01-06 11:12:53,361 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 258 [2021-01-06 11:12:53,368 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:53,560 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-01-06 11:12:53,562 INFO L625 ElimStorePlain]: treesize reduction 186, result has 36.5 percent of original size [2021-01-06 11:12:53,563 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:53,564 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2021-01-06 11:12:54,473 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2021-01-06 11:12:54,474 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2021-01-06 11:12:54,475 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 258 [2021-01-06 11:12:54,482 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:54,652 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2021-01-06 11:12:54,654 INFO L625 ElimStorePlain]: treesize reduction 198, result has 35.1 percent of original size [2021-01-06 11:12:54,655 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:54,655 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2021-01-06 11:12:55,559 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2021-01-06 11:12:55,561 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2021-01-06 11:12:55,561 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 114 treesize of output 258 [2021-01-06 11:12:55,569 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:55,741 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-01-06 11:12:55,743 INFO L625 ElimStorePlain]: treesize reduction 180, result has 37.3 percent of original size [2021-01-06 11:12:55,745 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:55,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2021-01-06 11:12:56,702 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2021-01-06 11:12:56,703 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2021-01-06 11:12:56,703 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 258 [2021-01-06 11:12:56,711 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:56,881 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2021-01-06 11:12:56,882 INFO L625 ElimStorePlain]: treesize reduction 192, result has 36.2 percent of original size [2021-01-06 11:12:56,883 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:56,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:109 [2021-01-06 11:12:57,846 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2021-01-06 11:12:57,847 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2021-01-06 11:12:57,848 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 258 [2021-01-06 11:12:57,856 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:58,045 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2021-01-06 11:12:58,046 INFO L625 ElimStorePlain]: treesize reduction 198, result has 36.7 percent of original size [2021-01-06 11:12:58,047 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:58,048 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:115 [2021-01-06 11:12:59,010 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2021-01-06 11:12:59,011 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2021-01-06 11:12:59,011 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 258 [2021-01-06 11:12:59,019 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:12:59,210 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2021-01-06 11:12:59,212 INFO L625 ElimStorePlain]: treesize reduction 230, result has 33.3 percent of original size [2021-01-06 11:12:59,214 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:12:59,214 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:115 [2021-01-06 11:13:00,239 WARN L197 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2021-01-06 11:13:00,241 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2021-01-06 11:13:00,241 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 120 treesize of output 258 [2021-01-06 11:13:00,248 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:13:00,433 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2021-01-06 11:13:00,435 INFO L625 ElimStorePlain]: treesize reduction 198, result has 38.3 percent of original size [2021-01-06 11:13:00,437 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 11:13:00,438 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:123 [2021-01-06 11:13:01,100 INFO L348 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2021-01-06 11:13:01,101 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 132 treesize of output 125 [2021-01-06 11:13:01,105 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 11:13:01,162 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 11:13:01,166 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 11:13:01,166 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:139, output treesize:96 [2021-01-06 11:13:01,485 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:13:01,488 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:13:01,493 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:13:01,495 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2021-01-06 11:13:01,498 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:13:01,500 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:13:01,501 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:13:01,502 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 11:13:01,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 11:13:01,506 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2021-01-06 11:13:01,509 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2021-01-06 11:13:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:13:01,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 11:13:01,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 37] total 81 [2021-01-06 11:13:01,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203424920] [2021-01-06 11:13:01,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-01-06 11:13:01,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:13:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-01-06 11:13:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=5946, Unknown=0, NotChecked=0, Total=6480 [2021-01-06 11:13:01,778 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 81 states. [2021-01-06 11:13:05,910 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-01-06 11:13:06,375 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-01-06 11:13:06,808 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2021-01-06 11:13:07,255 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-01-06 11:13:07,783 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-01-06 11:13:08,274 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2021-01-06 11:13:08,761 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2021-01-06 11:13:09,375 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-01-06 11:13:09,899 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-01-06 11:13:10,432 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2021-01-06 11:13:11,051 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2021-01-06 11:13:11,625 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2021-01-06 11:13:12,246 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2021-01-06 11:13:12,966 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-01-06 11:13:13,600 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2021-01-06 11:13:14,425 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 47 [2021-01-06 11:13:15,500 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 54 [2021-01-06 11:13:16,294 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 57 [2021-01-06 11:13:17,280 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 58 [2021-01-06 11:13:17,678 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2021-01-06 11:13:18,942 WARN L197 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 60 [2021-01-06 11:13:20,031 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 60 [2021-01-06 11:13:20,696 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2021-01-06 11:13:21,238 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 58 [2021-01-06 11:13:22,045 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 59 [2021-01-06 11:13:22,805 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 59 [2021-01-06 11:13:23,808 WARN L197 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 58 [2021-01-06 11:13:24,592 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 57 [2021-01-06 11:13:25,319 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 57 [2021-01-06 11:13:26,393 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 60 [2021-01-06 11:13:27,582 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 58 [2021-01-06 11:13:28,755 WARN L197 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 56 [2021-01-06 11:13:29,704 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 59