/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-dcfa08f [2020-12-23 01:15:50,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:15:50,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:15:50,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:15:50,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:15:50,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:15:50,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:15:50,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:15:50,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:15:51,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:15:51,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:15:51,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:15:51,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:15:51,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:15:51,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:15:51,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:15:51,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:15:51,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:15:51,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:15:51,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:15:51,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:15:51,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:15:51,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:15:51,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:15:51,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:15:51,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 01:15:51,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 01:15:51,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 01:15:51,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 01:15:51,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 01:15:51,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 01:15:51,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 01:15:51,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 01:15:51,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:15:51,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:15:51,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:15:51,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:15:51,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:15:51,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:15:51,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:15:51,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:15:51,149 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:15:51,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:15:51,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:15:51,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:15:51,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:15:51,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:15:51,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:15:51,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:15:51,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:15:51,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:15:51,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:15:51,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:15:51,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:15:51,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:15:51,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:15:51,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:15:51,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:15:51,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:15:51,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:15:51,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:15:51,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:15:51,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:15:51,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:15:51,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:15:51,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:15:51,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:15:51,643 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:15:51,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs4.c [2020-12-23 01:15:51,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9063fc395/593353b52d85425e9b9caa56b3c48ecb/FLAG155e4e095 [2020-12-23 01:15:52,359 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:15:52,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-fpi/brs4.c [2020-12-23 01:15:52,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9063fc395/593353b52d85425e9b9caa56b3c48ecb/FLAG155e4e095 [2020-12-23 01:15:52,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9063fc395/593353b52d85425e9b9caa56b3c48ecb [2020-12-23 01:15:52,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:15:52,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:15:52,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:15:52,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:15:52,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:15:52,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:15:52" (1/1) ... [2020-12-23 01:15:52,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692b728c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:52, skipping insertion in model container [2020-12-23 01:15:52,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:15:52" (1/1) ... [2020-12-23 01:15:52,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:15:52,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:15:53,030 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]]] [2020-12-23 01:15:53,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:15:53,081 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:15:53,102 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]]] [2020-12-23 01:15:53,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:15:53,151 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:15:53,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53 WrapperNode [2020-12-23 01:15:53,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:15:53,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:15:53,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:15:53,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:15:53,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:15:53,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:15:53,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:15:53,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:15:53,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... [2020-12-23 01:15:53,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:15:53,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:15:53,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:15:53,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:15:53,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:15:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:15:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:15:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:15:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-23 01:15:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:15:53,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:15:53,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:15:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:15:53,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:15:53,756 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 01:15:53,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:15:53 BoogieIcfgContainer [2020-12-23 01:15:53,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:15:53,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:15:53,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:15:53,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:15:53,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:15:52" (1/3) ... [2020-12-23 01:15:53,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c42e2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:15:53, skipping insertion in model container [2020-12-23 01:15:53,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:15:53" (2/3) ... [2020-12-23 01:15:53,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c42e2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:15:53, skipping insertion in model container [2020-12-23 01:15:53,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:15:53" (3/3) ... [2020-12-23 01:15:53,768 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4.c [2020-12-23 01:15:53,779 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:15:53,789 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:15:53,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:15:53,835 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:15:53,836 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:15:53,836 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:15:53,836 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:15:53,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:15:53,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:15:53,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:15:53,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:15:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-23 01:15:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:15:53,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:53,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:53,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-12-23 01:15:53,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:53,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343123160] [2020-12-23 01:15:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:54,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343123160] [2020-12-23 01:15:54,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:15:54,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:15:54,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349943816] [2020-12-23 01:15:54,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:15:54,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:54,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:15:54,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:15:54,133 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-23 01:15:54,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:54,151 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2020-12-23 01:15:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:15:54,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 01:15:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:54,162 INFO L225 Difference]: With dead ends: 36 [2020-12-23 01:15:54,162 INFO L226 Difference]: Without dead ends: 16 [2020-12-23 01:15:54,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:15:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-23 01:15:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-23 01:15:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 01:15:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-23 01:15:54,200 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-12-23 01:15:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:54,201 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-23 01:15:54,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:15:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-23 01:15:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:15:54,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:54,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:54,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:15:54,203 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:54,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:54,204 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-12-23 01:15:54,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:54,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257903536] [2020-12-23 01:15:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:54,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257903536] [2020-12-23 01:15:54,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:15:54,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:15:54,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635525768] [2020-12-23 01:15:54,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:15:54,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:54,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:15:54,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:15:54,368 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-12-23 01:15:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:54,459 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-12-23 01:15:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:15:54,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 01:15:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:54,461 INFO L225 Difference]: With dead ends: 33 [2020-12-23 01:15:54,461 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 01:15:54,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:15:54,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 01:15:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-12-23 01:15:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 01:15:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-23 01:15:54,468 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-12-23 01:15:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:54,469 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-23 01:15:54,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:15:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-23 01:15:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 01:15:54,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:54,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:54,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:15:54,470 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:54,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:54,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-12-23 01:15:54,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:54,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001535672] [2020-12-23 01:15:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 01:15:54,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001535672] [2020-12-23 01:15:54,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:15:54,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 01:15:54,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926900715] [2020-12-23 01:15:54,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 01:15:54,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:54,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 01:15:54,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:15:54,638 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-12-23 01:15:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:54,734 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-12-23 01:15:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 01:15:54,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 01:15:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:54,738 INFO L225 Difference]: With dead ends: 27 [2020-12-23 01:15:54,741 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 01:15:54,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 01:15:54,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 01:15:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-23 01:15:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 01:15:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-23 01:15:54,759 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2020-12-23 01:15:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:54,760 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-23 01:15:54,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 01:15:54,761 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-23 01:15:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 01:15:54,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:54,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:54,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:15:54,765 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:54,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:54,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2020-12-23 01:15:54,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:54,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124477615] [2020-12-23 01:15:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:54,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124477615] [2020-12-23 01:15:54,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177474022] [2020-12-23 01:15:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:55,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:15:55,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:55,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:55,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-12-23 01:15:55,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678337777] [2020-12-23 01:15:55,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 01:15:55,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:55,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 01:15:55,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:15:55,155 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2020-12-23 01:15:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:55,306 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-12-23 01:15:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:15:55,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-23 01:15:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:55,308 INFO L225 Difference]: With dead ends: 43 [2020-12-23 01:15:55,308 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 01:15:55,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:15:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 01:15:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-12-23 01:15:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 01:15:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-23 01:15:55,321 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-12-23 01:15:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:55,322 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-23 01:15:55,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 01:15:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-23 01:15:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 01:15:55,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:55,324 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:55,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:55,540 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:55,542 INFO L82 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2020-12-23 01:15:55,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:55,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648863969] [2020-12-23 01:15:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:56,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648863969] [2020-12-23 01:15:56,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719496959] [2020-12-23 01:15:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:56,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 01:15:56,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:56,292 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:15:56,297 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:56,302 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:56,304 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:56,304 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:15:56,384 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 [2020-12-23 01:15:56,386 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:56,417 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:56,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:56,419 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-23 01:15:56,502 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 [2020-12-23 01:15:56,504 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:56,515 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:56,516 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:56,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-23 01:15:56,620 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 [2020-12-23 01:15:56,623 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:56,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:56,638 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:15:56,639 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:30 [2020-12-23 01:15:56,744 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:56,750 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:56,756 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:56,760 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:56,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:56,767 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:56,772 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:15:56,776 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:15:56,780 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:15:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:56,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:56,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2020-12-23 01:15:56,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014279765] [2020-12-23 01:15:56,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-23 01:15:56,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:56,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-23 01:15:56,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-12-23 01:15:56,813 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 23 states. [2020-12-23 01:15:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:57,317 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-12-23 01:15:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 01:15:57,318 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2020-12-23 01:15:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:57,319 INFO L225 Difference]: With dead ends: 50 [2020-12-23 01:15:57,319 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 01:15:57,320 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 [2020-12-23 01:15:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 01:15:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-12-23 01:15:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 01:15:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-12-23 01:15:57,325 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-12-23 01:15:57,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:57,325 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-12-23 01:15:57,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-23 01:15:57,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-23 01:15:57,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 01:15:57,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:57,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:57,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:57,550 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:57,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2020-12-23 01:15:57,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:57,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469486723] [2020-12-23 01:15:57,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:57,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469486723] [2020-12-23 01:15:57,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007138239] [2020-12-23 01:15:57,648 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 [2020-12-23 01:15:57,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:15:57,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:57,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 01:15:57,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:57,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:15:57,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-12-23 01:15:57,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347958666] [2020-12-23 01:15:57,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 01:15:57,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:15:57,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 01:15:57,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-12-23 01:15:57,855 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 13 states. [2020-12-23 01:15:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:15:58,081 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-12-23 01:15:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 01:15:58,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-12-23 01:15:58,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:15:58,082 INFO L225 Difference]: With dead ends: 62 [2020-12-23 01:15:58,083 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 01:15:58,083 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 [2020-12-23 01:15:58,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 01:15:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-12-23 01:15:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 01:15:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-12-23 01:15:58,089 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 26 [2020-12-23 01:15:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:15:58,090 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-12-23 01:15:58,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 01:15:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-12-23 01:15:58,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:15:58,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:15:58,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:15:58,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:15:58,307 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:15:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:15:58,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1198950171, now seen corresponding path program 3 times [2020-12-23 01:15:58,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:15:58,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990020732] [2020-12-23 01:15:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:15:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:15:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:15:59,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990020732] [2020-12-23 01:15:59,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939435901] [2020-12-23 01:15:59,644 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 [2020-12-23 01:15:59,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 01:15:59,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:15:59,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 01:15:59,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:15:59,734 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:15:59,736 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:59,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:59,741 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:59,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:15:59,786 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:15:59,787 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:59,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:59,794 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:59,795 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:15:59,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:15:59,928 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 [2020-12-23 01:15:59,930 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:15:59,941 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:15:59,942 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:15:59,942 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-12-23 01:16:00,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:00,223 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 [2020-12-23 01:16:00,225 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:00,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:00,247 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:00,247 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:49 [2020-12-23 01:16:00,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:00,489 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:00,489 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 [2020-12-23 01:16:00,493 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:00,535 INFO L625 ElimStorePlain]: treesize reduction 51, result has 52.8 percent of original size [2020-12-23 01:16:00,537 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:00,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:57 [2020-12-23 01:16:00,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:00,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:00,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:00,850 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:00,850 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 [2020-12-23 01:16:00,854 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:00,901 INFO L625 ElimStorePlain]: treesize reduction 76, result has 43.3 percent of original size [2020-12-23 01:16:00,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:00,906 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:58 [2020-12-23 01:16:01,198 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:01,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:01,204 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:01,207 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:01,213 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:01,216 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:01,217 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:01,222 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:01,223 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:01,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:01,229 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:16:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:16:01,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:01,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2020-12-23 01:16:01,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434876449] [2020-12-23 01:16:01,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 01:16:01,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:01,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 01:16:01,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 01:16:01,303 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 38 states. [2020-12-23 01:16:03,310 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-12-23 01:16:03,469 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2020-12-23 01:16:03,664 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2020-12-23 01:16:03,875 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 44 [2020-12-23 01:16:04,082 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2020-12-23 01:16:04,362 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2020-12-23 01:16:05,629 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 40 [2020-12-23 01:16:06,601 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 43 [2020-12-23 01:16:08,342 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 51 [2020-12-23 01:16:08,809 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2020-12-23 01:16:09,009 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-12-23 01:16:09,261 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2020-12-23 01:16:09,520 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2020-12-23 01:16:09,742 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 55 [2020-12-23 01:16:10,286 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-12-23 01:16:10,503 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2020-12-23 01:16:10,667 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-12-23 01:16:11,110 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2020-12-23 01:16:11,425 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-12-23 01:16:11,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:11,463 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2020-12-23 01:16:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-23 01:16:11,463 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 29 [2020-12-23 01:16:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:11,466 INFO L225 Difference]: With dead ends: 85 [2020-12-23 01:16:11,466 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 01:16:11,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=842, Invalid=4858, Unknown=0, NotChecked=0, Total=5700 [2020-12-23 01:16:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 01:16:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 37. [2020-12-23 01:16:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 01:16:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 01:16:11,493 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 29 [2020-12-23 01:16:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:11,494 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 01:16:11,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 01:16:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 01:16:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 01:16:11,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:11,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:11,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:11,696 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:11,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:11,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1722173266, now seen corresponding path program 4 times [2020-12-23 01:16:11,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:11,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886062283] [2020-12-23 01:16:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:11,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886062283] [2020-12-23 01:16:11,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564673941] [2020-12-23 01:16:11,814 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 [2020-12-23 01:16:11,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:16:11,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:11,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-23 01:16:11,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:11,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:11,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2020-12-23 01:16:11,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512666834] [2020-12-23 01:16:11,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 01:16:11,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:11,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 01:16:11,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:16:11,985 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 16 states. [2020-12-23 01:16:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:12,364 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-12-23 01:16:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-23 01:16:12,365 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-12-23 01:16:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:12,366 INFO L225 Difference]: With dead ends: 86 [2020-12-23 01:16:12,366 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 01:16:12,367 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 [2020-12-23 01:16:12,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 01:16:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2020-12-23 01:16:12,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 01:16:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-12-23 01:16:12,375 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 32 [2020-12-23 01:16:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:12,375 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-12-23 01:16:12,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 01:16:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-12-23 01:16:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 01:16:12,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:12,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:12,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:12,593 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:12,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:12,594 INFO L82 PathProgramCache]: Analyzing trace with hash 456261758, now seen corresponding path program 5 times [2020-12-23 01:16:12,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:12,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237844316] [2020-12-23 01:16:12,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:13,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237844316] [2020-12-23 01:16:13,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026796093] [2020-12-23 01:16:13,916 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 [2020-12-23 01:16:13,995 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 01:16:13,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:13,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 01:16:13,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:14,013 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:16:14,014 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,025 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,026 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,026 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 01:16:14,047 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:14,048 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,059 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,059 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 01:16:14,085 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2020-12-23 01:16:14,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,097 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2020-12-23 01:16:14,098 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,105 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,105 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,117 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,118 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,118 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:48, output treesize:37 [2020-12-23 01:16:14,151 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 [2020-12-23 01:16:14,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,176 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 [2020-12-23 01:16:14,179 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,187 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,188 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,214 INFO L625 ElimStorePlain]: treesize reduction 7, result has 87.5 percent of original size [2020-12-23 01:16:14,215 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,215 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:86, output treesize:49 [2020-12-23 01:16:14,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,306 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 [2020-12-23 01:16:14,307 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,323 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,325 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,325 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2020-12-23 01:16:14,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,468 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:14,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,472 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 [2020-12-23 01:16:14,474 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,492 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:61 [2020-12-23 01:16:14,612 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:14,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:14,620 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 [2020-12-23 01:16:14,630 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,650 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,651 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,652 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:84, output treesize:67 [2020-12-23 01:16:14,830 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 [2020-12-23 01:16:14,832 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:14,845 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:14,852 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:14,853 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:57, output treesize:40 [2020-12-23 01:16:14,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:14,937 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:14,940 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:14,941 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:14,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:14,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:14,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:14,951 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:14,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:14,955 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:14,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:14,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:14,961 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:16:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:15,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:15,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 30 [2020-12-23 01:16:15,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579106612] [2020-12-23 01:16:15,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 01:16:15,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:15,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 01:16:15,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2020-12-23 01:16:15,012 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 30 states. [2020-12-23 01:16:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:16,615 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-12-23 01:16:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 01:16:16,616 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 35 [2020-12-23 01:16:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:16,616 INFO L225 Difference]: With dead ends: 74 [2020-12-23 01:16:16,617 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 01:16:16,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=288, Invalid=1692, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 01:16:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 01:16:16,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-23 01:16:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 01:16:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-23 01:16:16,626 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 35 [2020-12-23 01:16:16,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:16,626 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-23 01:16:16,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 01:16:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-23 01:16:16,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 01:16:16,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:16,628 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:16,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:16,843 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:16,844 INFO L82 PathProgramCache]: Analyzing trace with hash 518824043, now seen corresponding path program 6 times [2020-12-23 01:16:16,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:16,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506415691] [2020-12-23 01:16:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:17,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506415691] [2020-12-23 01:16:17,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95035121] [2020-12-23 01:16:17,021 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 [2020-12-23 01:16:17,103 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-23 01:16:17,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:17,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-23 01:16:17,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:17,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:17,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2020-12-23 01:16:17,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149710409] [2020-12-23 01:16:17,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 01:16:17,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:17,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 01:16:17,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-23 01:16:17,260 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 19 states. [2020-12-23 01:16:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:17,495 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-12-23 01:16:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 01:16:17,496 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2020-12-23 01:16:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:17,497 INFO L225 Difference]: With dead ends: 67 [2020-12-23 01:16:17,497 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 01:16:17,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2020-12-23 01:16:17,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 01:16:17,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-12-23 01:16:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 01:16:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-12-23 01:16:17,505 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 38 [2020-12-23 01:16:17,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:17,505 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-12-23 01:16:17,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 01:16:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-12-23 01:16:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 01:16:17,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:17,507 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:17,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 01:16:17,720 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:17,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:17,721 INFO L82 PathProgramCache]: Analyzing trace with hash 534813113, now seen corresponding path program 7 times [2020-12-23 01:16:17,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:17,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873436487] [2020-12-23 01:16:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:20,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873436487] [2020-12-23 01:16:20,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857452513] [2020-12-23 01:16:20,379 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 [2020-12-23 01:16:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:20,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 01:16:20,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:20,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:16:20,465 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,470 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:20,471 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,471 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:16:20,577 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:20,578 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:20,586 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,586 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:16:20,726 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:20,727 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:16:20,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,751 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:16:20,753 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,753 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:16:20,918 INFO L348 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2020-12-23 01:16:20,919 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 69 [2020-12-23 01:16:20,922 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,955 INFO L625 ElimStorePlain]: treesize reduction 22, result has 64.5 percent of original size [2020-12-23 01:16:20,956 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:20,956 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:16:21,218 INFO L348 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2020-12-23 01:16:21,218 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 [2020-12-23 01:16:21,222 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:21,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:21,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:21,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:44 [2020-12-23 01:16:21,431 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2020-12-23 01:16:21,431 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2020-12-23 01:16:21,433 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:21,453 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:21,454 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:21,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2020-12-23 01:16:21,731 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:16:21,732 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:16:21,737 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:21,792 INFO L625 ElimStorePlain]: treesize reduction 78, result has 44.3 percent of original size [2020-12-23 01:16:21,793 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:21,794 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2020-12-23 01:16:22,043 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:16:22,044 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:16:22,047 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:22,088 INFO L625 ElimStorePlain]: treesize reduction 84, result has 42.5 percent of original size [2020-12-23 01:16:22,089 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:22,090 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2020-12-23 01:16:22,327 INFO L348 Elim1Store]: treesize reduction 72, result has 44.2 percent of original size [2020-12-23 01:16:22,328 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 128 [2020-12-23 01:16:22,332 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:22,385 INFO L625 ElimStorePlain]: treesize reduction 96, result has 39.2 percent of original size [2020-12-23 01:16:22,387 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:22,388 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:79, output treesize:62 [2020-12-23 01:16:22,594 INFO L348 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2020-12-23 01:16:22,595 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 [2020-12-23 01:16:22,597 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:22,612 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:22,615 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:22,616 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:74, output treesize:55 [2020-12-23 01:16:22,739 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:22,743 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:22,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:22,747 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:22,752 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:22,753 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:16:22,761 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:22,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:22,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:22,766 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:22,771 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:22,772 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-23 01:16:22,775 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:16:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:22,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:22,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20] total 46 [2020-12-23 01:16:22,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21195693] [2020-12-23 01:16:22,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-23 01:16:22,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:22,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-23 01:16:22,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2020-12-23 01:16:22,856 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 46 states. [2020-12-23 01:16:24,613 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 33 [2020-12-23 01:16:24,821 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 34 [2020-12-23 01:16:25,052 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 38 [2020-12-23 01:16:25,278 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 38 [2020-12-23 01:16:25,608 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 47 [2020-12-23 01:16:26,013 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-12-23 01:16:26,200 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 43 [2020-12-23 01:16:26,477 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-12-23 01:16:26,717 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 43 [2020-12-23 01:16:27,020 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 45 [2020-12-23 01:16:27,287 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 42 [2020-12-23 01:16:27,547 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 42 [2020-12-23 01:16:27,896 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 45 [2020-12-23 01:16:28,152 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 44 [2020-12-23 01:16:28,438 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 41 [2020-12-23 01:16:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:28,496 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-12-23 01:16:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-23 01:16:28,496 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 41 [2020-12-23 01:16:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:28,498 INFO L225 Difference]: With dead ends: 77 [2020-12-23 01:16:28,498 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 01:16:28,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=612, Invalid=4644, Unknown=0, NotChecked=0, Total=5256 [2020-12-23 01:16:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 01:16:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-12-23 01:16:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 01:16:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 01:16:28,508 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 41 [2020-12-23 01:16:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:28,508 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 01:16:28,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-12-23 01:16:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 01:16:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 01:16:28,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:28,509 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:28,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-23 01:16:28,723 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:28,724 INFO L82 PathProgramCache]: Analyzing trace with hash -114935472, now seen corresponding path program 8 times [2020-12-23 01:16:28,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:28,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142634721] [2020-12-23 01:16:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:28,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142634721] [2020-12-23 01:16:28,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681947990] [2020-12-23 01:16:28,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:28,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:16:28,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:28,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 01:16:28,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:29,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:29,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2020-12-23 01:16:29,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788527914] [2020-12-23 01:16:29,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 01:16:29,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:29,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 01:16:29,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-12-23 01:16:29,188 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 22 states. [2020-12-23 01:16:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:29,580 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-12-23 01:16:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 01:16:29,582 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 44 [2020-12-23 01:16:29,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:29,583 INFO L225 Difference]: With dead ends: 76 [2020-12-23 01:16:29,583 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 01:16:29,584 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 [2020-12-23 01:16:29,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 01:16:29,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-12-23 01:16:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 01:16:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-12-23 01:16:29,599 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 44 [2020-12-23 01:16:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:29,599 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-12-23 01:16:29,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 01:16:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-12-23 01:16:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 01:16:29,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:29,605 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:29,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:29,822 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:29,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:29,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1230251612, now seen corresponding path program 9 times [2020-12-23 01:16:29,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:29,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977145821] [2020-12-23 01:16:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:32,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977145821] [2020-12-23 01:16:32,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132354465] [2020-12-23 01:16:32,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:32,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 01:16:32,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:32,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-23 01:16:32,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:32,757 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:16:32,758 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,764 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:32,765 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 01:16:32,788 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:32,789 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:32,803 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,803 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 01:16:32,829 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2020-12-23 01:16:32,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,838 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2020-12-23 01:16:32,839 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,844 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:32,845 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,857 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:32,857 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,858 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:47, output treesize:36 [2020-12-23 01:16:32,883 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 [2020-12-23 01:16:32,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:32,905 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 [2020-12-23 01:16:32,908 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:32,917 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,933 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:32,935 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:32,936 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:62, output treesize:44 [2020-12-23 01:16:33,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,030 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 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 [2020-12-23 01:16:33,035 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:33,053 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,053 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2020-12-23 01:16:33,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,329 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 [2020-12-23 01:16:33,332 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:33,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:71 [2020-12-23 01:16:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:33,805 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 [2020-12-23 01:16:33,807 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:33,837 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:33,837 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:107, output treesize:103 [2020-12-23 01:16:34,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,050 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:16:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,063 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 [2020-12-23 01:16:34,066 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,089 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:34,090 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,090 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:100 [2020-12-23 01:16:34,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,261 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:34,262 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 [2020-12-23 01:16:34,267 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,331 INFO L625 ElimStorePlain]: treesize reduction 132, result has 43.6 percent of original size [2020-12-23 01:16:34,335 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:102 [2020-12-23 01:16:34,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:34,833 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-12-23 01:16:34,835 INFO L348 Elim1Store]: treesize reduction 17, result has 91.5 percent of original size [2020-12-23 01:16:34,836 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 [2020-12-23 01:16:34,846 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,968 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2020-12-23 01:16:34,969 INFO L625 ElimStorePlain]: treesize reduction 318, result has 26.2 percent of original size [2020-12-23 01:16:34,970 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:34,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:128, output treesize:113 [2020-12-23 01:16:35,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:35,554 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2020-12-23 01:16:35,555 INFO L348 Elim1Store]: treesize reduction 52, result has 84.1 percent of original size [2020-12-23 01:16:35,556 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 [2020-12-23 01:16:35,566 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:35,711 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 50 [2020-12-23 01:16:35,712 INFO L625 ElimStorePlain]: treesize reduction 518, result has 19.2 percent of original size [2020-12-23 01:16:35,713 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:35,713 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:139, output treesize:123 [2020-12-23 01:16:36,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:16:36,309 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:36,310 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 [2020-12-23 01:16:36,319 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:36,423 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46 [2020-12-23 01:16:36,424 INFO L625 ElimStorePlain]: treesize reduction 410, result has 18.0 percent of original size [2020-12-23 01:16:36,426 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:36,426 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:106, output treesize:90 [2020-12-23 01:16:36,868 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:36,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:36,873 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:36,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:16:36,879 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:36,881 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:36,882 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:36,885 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:16:36,888 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:36,889 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:16:36,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-12-23 01:16:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:36,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:36,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 52 [2020-12-23 01:16:36,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212386066] [2020-12-23 01:16:36,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-23 01:16:36,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:36,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-23 01:16:37,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2346, Unknown=0, NotChecked=0, Total=2652 [2020-12-23 01:16:37,000 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 52 states. [2020-12-23 01:16:38,821 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2020-12-23 01:16:39,040 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-12-23 01:16:39,262 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-12-23 01:16:39,541 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2020-12-23 01:16:40,043 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2020-12-23 01:16:40,206 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-12-23 01:16:40,457 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-23 01:16:40,664 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2020-12-23 01:16:40,839 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-12-23 01:16:41,119 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2020-12-23 01:16:41,367 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2020-12-23 01:16:41,679 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 80 [2020-12-23 01:16:41,936 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 53 [2020-12-23 01:16:42,590 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2020-12-23 01:16:44,340 WARN L197 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 111 DAG size of output: 80 [2020-12-23 01:16:44,703 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-12-23 01:16:44,947 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-12-23 01:16:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:16:44,978 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-12-23 01:16:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-23 01:16:44,979 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 47 [2020-12-23 01:16:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:16:44,979 INFO L225 Difference]: With dead ends: 111 [2020-12-23 01:16:44,979 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 01:16:44,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=797, Invalid=6513, Unknown=0, NotChecked=0, Total=7310 [2020-12-23 01:16:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 01:16:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-12-23 01:16:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 01:16:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-12-23 01:16:44,994 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 47 [2020-12-23 01:16:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:16:44,994 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-12-23 01:16:44,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-12-23 01:16:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-12-23 01:16:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 01:16:44,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:16:44,995 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:16:45,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:45,204 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:16:45,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:16:45,205 INFO L82 PathProgramCache]: Analyzing trace with hash 282343897, now seen corresponding path program 10 times [2020-12-23 01:16:45,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:16:45,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840679636] [2020-12-23 01:16:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:16:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:16:46,951 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-23 01:16:47,190 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 01:16:47,362 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-12-23 01:16:47,701 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-12-23 01:16:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:48,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840679636] [2020-12-23 01:16:48,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051933595] [2020-12-23 01:16:48,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:16:48,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:16:48,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:16:48,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-23 01:16:48,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:16:48,806 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:16:48,808 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:48,812 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:48,812 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:48,813 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:16:48,941 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:16:48,942 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:48,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:48,952 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:48,952 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:16:49,102 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:49,103 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:16:49,104 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:49,132 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:16:49,133 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:49,133 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:16:49,336 INFO L348 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2020-12-23 01:16:49,337 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 69 [2020-12-23 01:16:49,339 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:49,373 INFO L625 ElimStorePlain]: treesize reduction 22, result has 64.5 percent of original size [2020-12-23 01:16:49,374 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:49,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:16:49,646 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2020-12-23 01:16:49,647 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 138 [2020-12-23 01:16:49,650 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:49,708 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.1 percent of original size [2020-12-23 01:16:49,710 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:49,710 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2020-12-23 01:16:50,035 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-12-23 01:16:50,036 INFO L348 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2020-12-23 01:16:50,037 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 153 [2020-12-23 01:16:50,039 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,109 INFO L625 ElimStorePlain]: treesize reduction 66, result has 46.8 percent of original size [2020-12-23 01:16:50,110 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,111 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2020-12-23 01:16:50,529 INFO L348 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2020-12-23 01:16:50,530 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 [2020-12-23 01:16:50,532 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,555 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:50,556 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,556 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:66, output treesize:62 [2020-12-23 01:16:50,804 INFO L348 Elim1Store]: treesize reduction 180, result has 0.6 percent of original size [2020-12-23 01:16:50,804 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 [2020-12-23 01:16:50,807 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:50,835 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:50,836 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:72 [2020-12-23 01:16:51,213 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:16:51,214 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:16:51,214 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 [2020-12-23 01:16:51,223 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:51,298 INFO L625 ElimStorePlain]: treesize reduction 96, result has 45.5 percent of original size [2020-12-23 01:16:51,299 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:51,299 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:80 [2020-12-23 01:16:51,635 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:16:51,636 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:16:51,636 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 [2020-12-23 01:16:51,641 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:51,713 INFO L625 ElimStorePlain]: treesize reduction 114, result has 41.2 percent of original size [2020-12-23 01:16:51,714 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:51,714 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:80 [2020-12-23 01:16:52,043 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:16:52,044 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:16:52,044 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 [2020-12-23 01:16:52,050 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:52,134 INFO L625 ElimStorePlain]: treesize reduction 112, result has 42.3 percent of original size [2020-12-23 01:16:52,136 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:52,136 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:82 [2020-12-23 01:16:52,499 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:16:52,500 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:16:52,501 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 [2020-12-23 01:16:52,506 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:52,596 INFO L625 ElimStorePlain]: treesize reduction 124, result has 39.8 percent of original size [2020-12-23 01:16:52,597 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:52,597 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:82 [2020-12-23 01:16:53,014 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-12-23 01:16:53,015 INFO L348 Elim1Store]: treesize reduction 180, result has 32.1 percent of original size [2020-12-23 01:16:53,015 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 [2020-12-23 01:16:53,021 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:53,107 INFO L625 ElimStorePlain]: treesize reduction 138, result has 38.9 percent of original size [2020-12-23 01:16:53,108 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:16:53,108 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:103, output treesize:88 [2020-12-23 01:16:53,387 INFO L348 Elim1Store]: treesize reduction 180, result has 0.6 percent of original size [2020-12-23 01:16:53,388 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 [2020-12-23 01:16:53,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:16:53,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:16:53,419 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:16:53,419 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:98, output treesize:75 [2020-12-23 01:16:53,593 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:53,596 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:53,599 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:53,600 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:53,605 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:53,606 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:16:53,611 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:16:53,613 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:53,615 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:53,616 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 01:16:53,620 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:16:53,622 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 01:16:53,625 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:16:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:16:53,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:16:53,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27] total 59 [2020-12-23 01:16:53,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263186664] [2020-12-23 01:16:53,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-12-23 01:16:53,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:16:53,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-12-23 01:16:53,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=3099, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 01:16:53,752 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 59 states. [2020-12-23 01:16:56,473 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2020-12-23 01:16:56,714 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 42 [2020-12-23 01:16:57,005 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 46 [2020-12-23 01:16:57,460 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 48 [2020-12-23 01:16:57,728 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2020-12-23 01:16:58,188 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 50 [2020-12-23 01:16:58,468 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 46 [2020-12-23 01:16:58,738 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 47 [2020-12-23 01:16:58,995 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2020-12-23 01:16:59,232 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 44 [2020-12-23 01:16:59,478 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 45 [2020-12-23 01:16:59,841 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 47 [2020-12-23 01:17:00,224 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-12-23 01:17:00,529 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 48 [2020-12-23 01:17:00,810 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2020-12-23 01:17:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:00,870 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-12-23 01:17:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 01:17:00,872 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 53 [2020-12-23 01:17:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:00,873 INFO L225 Difference]: With dead ends: 65 [2020-12-23 01:17:00,873 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 01:17:00,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2647 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=731, Invalid=7459, Unknown=0, NotChecked=0, Total=8190 [2020-12-23 01:17:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 01:17:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-12-23 01:17:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 01:17:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-12-23 01:17:00,886 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 53 [2020-12-23 01:17:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:00,886 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-12-23 01:17:00,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-12-23 01:17:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-12-23 01:17:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-23 01:17:00,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:00,887 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:01,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 01:17:01,092 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:01,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:01,093 INFO L82 PathProgramCache]: Analyzing trace with hash -937614032, now seen corresponding path program 11 times [2020-12-23 01:17:01,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:01,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042613889] [2020-12-23 01:17:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:01,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042613889] [2020-12-23 01:17:01,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327267860] [2020-12-23 01:17:01,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:01,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-23 01:17:01,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:01,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 01:17:01,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:01,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:01,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2020-12-23 01:17:01,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488709050] [2020-12-23 01:17:01,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 01:17:01,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:01,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 01:17:01,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-12-23 01:17:01,951 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 28 states. [2020-12-23 01:17:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:17:02,946 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2020-12-23 01:17:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-23 01:17:02,947 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 56 [2020-12-23 01:17:02,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:17:02,948 INFO L225 Difference]: With dead ends: 143 [2020-12-23 01:17:02,948 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 01:17:02,949 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 [2020-12-23 01:17:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 01:17:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2020-12-23 01:17:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 01:17:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-12-23 01:17:02,961 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 56 [2020-12-23 01:17:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:17:02,961 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-12-23 01:17:02,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 01:17:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-12-23 01:17:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 01:17:02,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:17:02,962 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:17:03,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 01:17:03,175 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:17:03,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:17:03,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1208754116, now seen corresponding path program 12 times [2020-12-23 01:17:03,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:17:03,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072484424] [2020-12-23 01:17:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:17:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:17:04,480 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-23 01:17:04,649 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-12-23 01:17:04,829 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-23 01:17:05,030 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-23 01:17:05,220 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 01:17:05,397 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 01:17:05,576 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 01:17:05,738 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 01:17:05,943 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-12-23 01:17:06,134 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-23 01:17:06,426 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2020-12-23 01:17:06,652 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-23 01:17:07,525 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-12-23 01:17:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 15 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:08,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072484424] [2020-12-23 01:17:08,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413487459] [2020-12-23 01:17:08,463 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:17:08,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-23 01:17:08,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:17:08,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-23 01:17:08,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:17:08,653 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:17:08,655 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,662 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:08,664 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,665 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 01:17:08,685 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:17:08,686 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:08,702 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,702 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 01:17:08,725 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2020-12-23 01:17:08,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,736 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2020-12-23 01:17:08,737 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,744 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:08,745 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,760 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:08,761 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,761 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:48, output treesize:37 [2020-12-23 01:17:08,789 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 [2020-12-23 01:17:08,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,810 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 [2020-12-23 01:17:08,812 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,820 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:08,821 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,839 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:08,840 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,840 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:62, output treesize:44 [2020-12-23 01:17:08,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:08,955 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 [2020-12-23 01:17:08,957 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,976 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:08,977 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:08,977 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2020-12-23 01:17:09,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,308 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 [2020-12-23 01:17:09,317 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:09,371 INFO L625 ElimStorePlain]: treesize reduction 7, result has 93.1 percent of original size [2020-12-23 01:17:09,372 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:09,372 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:101, output treesize:94 [2020-12-23 01:17:09,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:09,634 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-23 01:17:09,635 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:09,635 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 [2020-12-23 01:17:09,643 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:09,782 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-12-23 01:17:09,784 INFO L625 ElimStorePlain]: treesize reduction 208, result has 36.8 percent of original size [2020-12-23 01:17:09,787 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:17:09,787 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:109, output treesize:121 [2020-12-23 01:17:10,221 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 01:17:10,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,527 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-23 01:17:10,528 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:10,528 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 [2020-12-23 01:17:10,540 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:10,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:10,567 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:10,575 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 [2020-12-23 01:17:10,577 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:10,844 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-12-23 01:17:10,845 INFO L625 ElimStorePlain]: treesize reduction 199, result has 53.2 percent of original size [2020-12-23 01:17:10,847 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-23 01:17:10,847 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:244, output treesize:226 [2020-12-23 01:17:11,078 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-23 01:17:11,084 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:11,085 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:17:11,440 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-12-23 01:17:11,445 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:11,935 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-12-23 01:17:11,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:11,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:11,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,099 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:12,100 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 [2020-12-23 01:17:12,108 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:12,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,140 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 [2020-12-23 01:17:12,143 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:12,385 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-12-23 01:17:12,386 INFO L625 ElimStorePlain]: treesize reduction 14, result has 94.7 percent of original size [2020-12-23 01:17:12,388 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:17:12,388 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:259, output treesize:251 [2020-12-23 01:17:12,638 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 01:17:12,905 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 01:17:12,923 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:12,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,946 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:12,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:12,982 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:13,002 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 [2020-12-23 01:17:13,008 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:13,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,048 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:13,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,085 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:13,085 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 [2020-12-23 01:17:13,089 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:13,337 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-12-23 01:17:13,338 INFO L625 ElimStorePlain]: treesize reduction 22, result has 91.9 percent of original size [2020-12-23 01:17:13,341 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:17:13,341 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:309, output treesize:251 [2020-12-23 01:17:13,774 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-12-23 01:17:13,797 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:13,812 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:13,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,841 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:13,870 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 [2020-12-23 01:17:13,873 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:13,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,904 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:13,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:13,944 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:13,944 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 [2020-12-23 01:17:13,948 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:14,187 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-23 01:17:14,188 INFO L625 ElimStorePlain]: treesize reduction 42, result has 86.6 percent of original size [2020-12-23 01:17:14,191 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:17:14,191 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:301, output treesize:271 [2020-12-23 01:17:14,679 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-12-23 01:17:14,883 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:14,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,924 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:14,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:14,986 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:15,013 INFO L244 Elim1Store]: Index analysis took 115 ms [2020-12-23 01:17:15,039 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:15,040 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 [2020-12-23 01:17:15,044 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:15,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,058 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:15,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,070 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 [2020-12-23 01:17:15,072 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:15,313 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-23 01:17:15,314 INFO L625 ElimStorePlain]: treesize reduction 42, result has 85.4 percent of original size [2020-12-23 01:17:15,317 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:17:15,317 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:301, output treesize:245 [2020-12-23 01:17:15,804 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 01:17:15,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:15,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,850 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:15,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,883 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:15,901 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 [2020-12-23 01:17:15,905 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:15,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,946 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:15,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:15,979 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:15,980 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 [2020-12-23 01:17:15,984 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:16,235 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-23 01:17:16,237 INFO L625 ElimStorePlain]: treesize reduction 50, result has 83.3 percent of original size [2020-12-23 01:17:16,239 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:17:16,240 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:301, output treesize:249 [2020-12-23 01:17:16,550 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-12-23 01:17:16,891 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-23 01:17:16,909 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:16,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,934 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:16,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,963 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:16,977 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 [2020-12-23 01:17:16,979 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:16,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:16,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,019 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:17:17,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,045 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:17,046 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 [2020-12-23 01:17:17,049 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,269 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-12-23 01:17:17,270 INFO L625 ElimStorePlain]: treesize reduction 8, result has 96.7 percent of original size [2020-12-23 01:17:17,272 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:17:17,273 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:302, output treesize:231 [2020-12-23 01:17:17,469 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-12-23 01:17:17,469 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:17,772 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-23 01:17:17,803 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:17,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,892 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 [2020-12-23 01:17:17,895 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:17,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:17,987 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:17,988 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 [2020-12-23 01:17:17,993 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:18,265 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-12-23 01:17:18,266 INFO L625 ElimStorePlain]: treesize reduction 56, result has 83.0 percent of original size [2020-12-23 01:17:18,268 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-12-23 01:17:18,269 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:293, output treesize:273 [2020-12-23 01:17:18,605 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-23 01:17:18,958 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-12-23 01:17:19,351 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-12-23 01:17:19,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:17:19,449 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:17:19,452 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 [2020-12-23 01:17:19,456 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:17:19,566 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-23 01:17:19,567 INFO L625 ElimStorePlain]: treesize reduction 89, result has 53.4 percent of original size [2020-12-23 01:17:19,570 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:17:19,570 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:128, output treesize:102 [2020-12-23 01:17:26,674 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:26,687 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:17:26,691 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:26,692 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:17:26,697 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:26,699 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:26,700 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:17:26,703 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 01:17:26,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:17:26,710 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-23 01:17:26,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 15 disjuncts [2020-12-23 01:17:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:17:26,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:17:26,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36] total 65 [2020-12-23 01:17:26,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487757654] [2020-12-23 01:17:26,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-12-23 01:17:26,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:17:26,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-12-23 01:17:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=3737, Unknown=1, NotChecked=0, Total=4160 [2020-12-23 01:17:26,930 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 65 states. [2020-12-23 01:17:29,406 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-12-23 01:17:29,674 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-12-23 01:17:30,092 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-12-23 01:17:30,459 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-12-23 01:17:30,882 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 59 [2020-12-23 01:17:33,351 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 53 [2020-12-23 01:17:33,859 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 53 [2020-12-23 01:17:34,219 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2020-12-23 01:17:34,701 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2020-12-23 01:17:35,068 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 60 [2020-12-23 01:17:35,541 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2020-12-23 01:17:36,104 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 71 [2020-12-23 01:17:36,569 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 57 [2020-12-23 01:17:36,986 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2020-12-23 01:17:37,284 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2020-12-23 01:17:37,941 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 61 [2020-12-23 01:17:40,332 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 56 [2020-12-23 01:17:40,618 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2020-12-23 01:17:40,966 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 60 [2020-12-23 01:17:41,276 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2020-12-23 01:17:44,530 WARN L197 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-12-23 01:17:44,919 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 62 [2020-12-23 01:17:46,382 WARN L197 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 130 DAG size of output: 62 [2020-12-23 01:17:48,898 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2020-12-23 01:17:49,360 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 73 [2020-12-23 01:17:49,826 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 58 [2020-12-23 01:17:50,254 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 69 [2020-12-23 01:17:50,772 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 90 [2020-12-23 01:17:51,414 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 92 [2020-12-23 01:17:51,832 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2020-12-23 01:17:52,415 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2020-12-23 01:17:57,107 WARN L197 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 188 DAG size of output: 66 [2020-12-23 01:17:57,489 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2020-12-23 01:17:58,428 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 76 [2020-12-23 01:18:00,909 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2020-12-23 01:18:01,546 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 81 [2020-12-23 01:18:02,172 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 93 [2020-12-23 01:18:02,519 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2020-12-23 01:18:03,294 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 98 [2020-12-23 01:18:03,882 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 95 [2020-12-23 01:18:04,568 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 100 [2020-12-23 01:18:07,117 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 64 [2020-12-23 01:18:07,666 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 66 [2020-12-23 01:18:08,071 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2020-12-23 01:18:08,491 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2020-12-23 01:18:08,956 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2020-12-23 01:18:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:09,017 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2020-12-23 01:18:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-23 01:18:09,018 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 59 [2020-12-23 01:18:09,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:09,019 INFO L225 Difference]: With dead ends: 122 [2020-12-23 01:18:09,019 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 01:18:09,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 25 SyntacticMatches, 10 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4688 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=1393, Invalid=13123, Unknown=4, NotChecked=0, Total=14520 [2020-12-23 01:18:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 01:18:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 70. [2020-12-23 01:18:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 01:18:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2020-12-23 01:18:09,042 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 59 [2020-12-23 01:18:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:09,042 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2020-12-23 01:18:09,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-12-23 01:18:09,042 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2020-12-23 01:18:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 01:18:09,043 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:09,043 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:09,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 01:18:09,257 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:09,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:09,258 INFO L82 PathProgramCache]: Analyzing trace with hash 608223213, now seen corresponding path program 13 times [2020-12-23 01:18:09,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:09,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936945743] [2020-12-23 01:18:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:18:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 95 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:09,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936945743] [2020-12-23 01:18:09,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54886833] [2020-12-23 01:18:09,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:18:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:18:09,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 01:18:09,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:10,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:18:10,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2020-12-23 01:18:10,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335862960] [2020-12-23 01:18:10,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 01:18:10,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:10,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 01:18:10,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-12-23 01:18:10,227 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 31 states. [2020-12-23 01:18:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:10,909 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2020-12-23 01:18:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 01:18:10,910 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2020-12-23 01:18:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:10,910 INFO L225 Difference]: With dead ends: 109 [2020-12-23 01:18:10,911 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 01:18:10,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 01:18:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 01:18:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-12-23 01:18:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 01:18:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-12-23 01:18:10,924 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 62 [2020-12-23 01:18:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:10,924 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-12-23 01:18:10,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 01:18:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-12-23 01:18:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 01:18:10,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:10,925 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:11,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:18:11,128 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:11,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:11,129 INFO L82 PathProgramCache]: Analyzing trace with hash 905478775, now seen corresponding path program 14 times [2020-12-23 01:18:11,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:11,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737488395] [2020-12-23 01:18:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:18:12,362 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-12-23 01:18:12,524 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-12-23 01:18:12,733 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-12-23 01:18:12,933 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-12-23 01:18:13,369 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-23 01:18:13,610 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-23 01:18:14,326 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-12-23 01:18:14,575 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-12-23 01:18:14,856 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-12-23 01:18:15,100 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-12-23 01:18:15,403 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-12-23 01:18:15,715 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-12-23 01:18:15,952 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-12-23 01:18:16,163 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-12-23 01:18:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 24 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:17,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737488395] [2020-12-23 01:18:17,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245674446] [2020-12-23 01:18:17,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:18:17,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:18:17,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:18:17,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-23 01:18:17,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:17,978 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:18:17,980 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:17,987 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:17,988 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:17,988 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:18:18,267 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:18:18,269 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:18,286 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:18,287 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:18,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-23 01:18:18,530 INFO L348 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2020-12-23 01:18:18,531 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2020-12-23 01:18:18,532 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:18,549 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:18,551 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:18,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2020-12-23 01:18:18,871 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:18:18,872 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 96 [2020-12-23 01:18:18,874 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:18,933 INFO L625 ElimStorePlain]: treesize reduction 44, result has 47.6 percent of original size [2020-12-23 01:18:18,934 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:18,934 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:18:19,317 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-12-23 01:18:19,318 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2020-12-23 01:18:19,319 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 138 [2020-12-23 01:18:19,324 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:19,402 INFO L625 ElimStorePlain]: treesize reduction 66, result has 42.6 percent of original size [2020-12-23 01:18:19,403 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:19,404 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49 [2020-12-23 01:18:19,902 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-12-23 01:18:19,903 INFO L348 Elim1Store]: treesize reduction 72, result has 68.6 percent of original size [2020-12-23 01:18:19,904 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 180 [2020-12-23 01:18:19,907 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:20,012 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-12-23 01:18:20,013 INFO L625 ElimStorePlain]: treesize reduction 88, result has 39.7 percent of original size [2020-12-23 01:18:20,017 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:20,018 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2020-12-23 01:18:20,569 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2020-12-23 01:18:20,570 INFO L348 Elim1Store]: treesize reduction 120, result has 62.0 percent of original size [2020-12-23 01:18:20,571 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 222 [2020-12-23 01:18:20,576 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:20,718 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-12-23 01:18:20,718 INFO L625 ElimStorePlain]: treesize reduction 110, result has 37.9 percent of original size [2020-12-23 01:18:20,720 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:20,720 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:67 [2020-12-23 01:18:21,371 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2020-12-23 01:18:21,372 INFO L348 Elim1Store]: treesize reduction 180, result has 56.6 percent of original size [2020-12-23 01:18:21,373 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 264 [2020-12-23 01:18:21,379 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:21,521 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2020-12-23 01:18:21,522 INFO L625 ElimStorePlain]: treesize reduction 132, result has 36.5 percent of original size [2020-12-23 01:18:21,524 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:21,524 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:80, output treesize:76 [2020-12-23 01:18:22,284 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 78 [2020-12-23 01:18:22,285 INFO L348 Elim1Store]: treesize reduction 252, result has 52.1 percent of original size [2020-12-23 01:18:22,287 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 [2020-12-23 01:18:22,292 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:22,451 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2020-12-23 01:18:22,451 INFO L625 ElimStorePlain]: treesize reduction 154, result has 35.6 percent of original size [2020-12-23 01:18:22,453 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:22,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:85 [2020-12-23 01:18:23,224 INFO L348 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2020-12-23 01:18:23,225 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2020-12-23 01:18:23,231 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:23,272 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:23,274 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:23,274 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:93 [2020-12-23 01:18:23,948 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:18:23,949 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:18:23,950 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 232 [2020-12-23 01:18:23,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:24,096 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2020-12-23 01:18:24,097 INFO L625 ElimStorePlain]: treesize reduction 166, result has 38.3 percent of original size [2020-12-23 01:18:24,098 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:24,099 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:103 [2020-12-23 01:18:24,771 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:18:24,772 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:18:24,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 232 [2020-12-23 01:18:24,779 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:24,909 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-12-23 01:18:24,910 INFO L625 ElimStorePlain]: treesize reduction 148, result has 40.6 percent of original size [2020-12-23 01:18:24,911 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:24,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:101 [2020-12-23 01:18:25,573 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:18:25,574 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:18:25,574 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 232 [2020-12-23 01:18:25,580 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:25,716 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-12-23 01:18:25,717 INFO L625 ElimStorePlain]: treesize reduction 124, result has 44.9 percent of original size [2020-12-23 01:18:25,718 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:25,718 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:101 [2020-12-23 01:18:26,339 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:18:26,340 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:18:26,341 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 105 treesize of output 232 [2020-12-23 01:18:26,347 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:26,495 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-12-23 01:18:26,496 INFO L625 ElimStorePlain]: treesize reduction 166, result has 38.3 percent of original size [2020-12-23 01:18:26,498 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:26,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:118, output treesize:103 [2020-12-23 01:18:27,216 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:18:27,217 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:18:27,217 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 [2020-12-23 01:18:27,223 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:27,366 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2020-12-23 01:18:27,367 INFO L625 ElimStorePlain]: treesize reduction 166, result has 40.1 percent of original size [2020-12-23 01:18:27,369 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:27,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:111 [2020-12-23 01:18:28,032 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:18:28,034 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:18:28,034 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 [2020-12-23 01:18:28,040 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:28,184 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-12-23 01:18:28,185 INFO L625 ElimStorePlain]: treesize reduction 180, result has 39.4 percent of original size [2020-12-23 01:18:28,186 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:28,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:117 [2020-12-23 01:18:28,862 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 62 [2020-12-23 01:18:28,863 INFO L348 Elim1Store]: treesize reduction 336, result has 25.2 percent of original size [2020-12-23 01:18:28,863 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 [2020-12-23 01:18:28,872 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:28,996 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2020-12-23 01:18:28,997 INFO L625 ElimStorePlain]: treesize reduction 180, result has 37.7 percent of original size [2020-12-23 01:18:28,999 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:18:28,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:109 [2020-12-23 01:18:29,427 INFO L348 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2020-12-23 01:18:29,428 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 [2020-12-23 01:18:29,430 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:18:29,472 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:18:29,475 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:18:29,475 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:119, output treesize:104 [2020-12-23 01:18:29,718 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:29,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:29,732 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:29,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:18:29,740 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:29,741 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:29,742 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:29,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:18:29,751 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:18:29,752 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-23 01:18:29,755 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:18:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:29,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:18:29,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 35] total 75 [2020-12-23 01:18:29,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830342383] [2020-12-23 01:18:29,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-12-23 01:18:29,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:29,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-12-23 01:18:29,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=5118, Unknown=0, NotChecked=0, Total=5550 [2020-12-23 01:18:29,957 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 75 states. [2020-12-23 01:18:32,895 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-12-23 01:18:33,174 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-12-23 01:18:33,701 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-12-23 01:18:33,989 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-12-23 01:18:34,268 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-12-23 01:18:34,562 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-12-23 01:18:34,860 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-12-23 01:18:35,144 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-12-23 01:18:35,450 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2020-12-23 01:18:35,838 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 52 [2020-12-23 01:18:36,220 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 54 [2020-12-23 01:18:36,625 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 56 [2020-12-23 01:18:37,040 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 56 [2020-12-23 01:18:37,261 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2020-12-23 01:18:37,976 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 58 [2020-12-23 01:18:38,538 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-12-23 01:18:38,791 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2020-12-23 01:18:39,212 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2020-12-23 01:18:39,571 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 56 [2020-12-23 01:18:39,972 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-12-23 01:18:40,438 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 58 [2020-12-23 01:18:40,946 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 55 [2020-12-23 01:18:41,276 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-12-23 01:18:41,758 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 57 [2020-12-23 01:18:42,125 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2020-12-23 01:18:42,634 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 57 [2020-12-23 01:18:43,013 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2020-12-23 01:18:43,485 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 57 [2020-12-23 01:18:43,897 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 55 [2020-12-23 01:18:44,252 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2020-12-23 01:18:44,729 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2020-12-23 01:18:45,146 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 57 [2020-12-23 01:18:45,564 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-12-23 01:18:46,196 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2020-12-23 01:18:46,622 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-12-23 01:18:47,291 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 61 [2020-12-23 01:18:47,694 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-12-23 01:18:48,285 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2020-12-23 01:18:48,820 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2020-12-23 01:18:49,235 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-12-23 01:18:49,885 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2020-12-23 01:18:50,363 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 54 [2020-12-23 01:18:50,758 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-23 01:18:51,204 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-23 01:18:51,773 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-12-23 01:18:52,378 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-12-23 01:18:52,738 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-12-23 01:18:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:52,765 INFO L93 Difference]: Finished difference Result 164 states and 178 transitions. [2020-12-23 01:18:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-12-23 01:18:52,767 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 65 [2020-12-23 01:18:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:52,768 INFO L225 Difference]: With dead ends: 164 [2020-12-23 01:18:52,769 INFO L226 Difference]: Without dead ends: 112 [2020-12-23 01:18:52,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 27 SyntacticMatches, 6 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5942 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=1433, Invalid=16927, Unknown=0, NotChecked=0, Total=18360 [2020-12-23 01:18:52,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-23 01:18:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 70. [2020-12-23 01:18:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 01:18:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-12-23 01:18:52,784 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 65 [2020-12-23 01:18:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:52,784 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-12-23 01:18:52,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-12-23 01:18:52,785 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-12-23 01:18:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 01:18:52,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:52,785 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:52,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 01:18:52,999 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:52,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash 24883154, now seen corresponding path program 15 times [2020-12-23 01:18:53,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:53,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150127837] [2020-12-23 01:18:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:18:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 120 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:53,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150127837] [2020-12-23 01:18:53,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14031848] [2020-12-23 01:18:53,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:18:53,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-23 01:18:53,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:18:54,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 01:18:54,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:18:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:18:54,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:18:54,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2020-12-23 01:18:54,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779736592] [2020-12-23 01:18:54,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-12-23 01:18:54,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:18:54,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-12-23 01:18:54,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 01:18:54,656 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 34 states. [2020-12-23 01:18:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:18:55,440 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-12-23 01:18:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 01:18:55,442 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 68 [2020-12-23 01:18:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:18:55,442 INFO L225 Difference]: With dead ends: 112 [2020-12-23 01:18:55,442 INFO L226 Difference]: Without dead ends: 76 [2020-12-23 01:18:55,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=454, Invalid=1438, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 01:18:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-23 01:18:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-12-23 01:18:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 01:18:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-12-23 01:18:55,456 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2020-12-23 01:18:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:18:55,457 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-12-23 01:18:55,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-12-23 01:18:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-12-23 01:18:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 01:18:55,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:18:55,457 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:18:55,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:18:55,671 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:18:55,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:18:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1838881818, now seen corresponding path program 16 times [2020-12-23 01:18:55,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:18:55,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015949930] [2020-12-23 01:18:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:18:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:18:57,017 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-12-23 01:18:57,182 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-12-23 01:18:57,404 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-12-23 01:18:57,603 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-12-23 01:18:57,871 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-12-23 01:18:58,099 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-12-23 01:18:58,591 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-12-23 01:18:58,879 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-12-23 01:18:59,779 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-12-23 01:19:00,140 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-12-23 01:19:00,453 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-12-23 01:19:00,751 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-12-23 01:19:01,059 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-12-23 01:19:01,336 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-12-23 01:19:01,596 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-12-23 01:19:01,881 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-23 01:19:02,196 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-12-23 01:19:02,440 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-12-23 01:19:02,681 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-12-23 01:19:03,153 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-12-23 01:19:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 37 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:19:04,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015949930] [2020-12-23 01:19:04,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699291934] [2020-12-23 01:19:04,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:19:04,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:19:04,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:19:04,620 WARN L261 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-23 01:19:04,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:04,637 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:19:04,640 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:04,649 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:04,650 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:04,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 01:19:04,879 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:19:04,880 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:04,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:04,893 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:04,893 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-23 01:19:05,169 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:05,170 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-12-23 01:19:05,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:05,218 INFO L625 ElimStorePlain]: treesize reduction 22, result has 56.0 percent of original size [2020-12-23 01:19:05,219 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:05,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:19:05,600 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-12-23 01:19:05,601 INFO L348 Elim1Store]: treesize reduction 12, result has 86.8 percent of original size [2020-12-23 01:19:05,602 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 96 [2020-12-23 01:19:05,605 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:05,676 INFO L625 ElimStorePlain]: treesize reduction 44, result has 45.7 percent of original size [2020-12-23 01:19:05,677 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:05,678 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2020-12-23 01:19:06,128 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-12-23 01:19:06,129 INFO L348 Elim1Store]: treesize reduction 36, result has 76.6 percent of original size [2020-12-23 01:19:06,129 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 138 [2020-12-23 01:19:06,132 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:06,212 INFO L625 ElimStorePlain]: treesize reduction 66, result has 41.1 percent of original size [2020-12-23 01:19:06,213 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:06,214 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:50, output treesize:46 [2020-12-23 01:19:06,723 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-12-23 01:19:06,724 INFO L348 Elim1Store]: treesize reduction 120, result has 52.0 percent of original size [2020-12-23 01:19:06,724 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 153 [2020-12-23 01:19:06,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:06,827 INFO L625 ElimStorePlain]: treesize reduction 66, result has 46.8 percent of original size [2020-12-23 01:19:06,828 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:06,828 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2020-12-23 01:19:07,390 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 49 [2020-12-23 01:19:07,391 INFO L348 Elim1Store]: treesize reduction 222, result has 39.0 percent of original size [2020-12-23 01:19:07,391 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 168 [2020-12-23 01:19:07,395 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:07,505 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-12-23 01:19:07,506 INFO L625 ElimStorePlain]: treesize reduction 66, result has 51.5 percent of original size [2020-12-23 01:19:07,507 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:07,507 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70 [2020-12-23 01:19:08,169 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 54 [2020-12-23 01:19:08,171 INFO L348 Elim1Store]: treesize reduction 342, result has 31.0 percent of original size [2020-12-23 01:19:08,171 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 79 treesize of output 183 [2020-12-23 01:19:08,176 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:08,300 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-12-23 01:19:08,301 INFO L625 ElimStorePlain]: treesize reduction 66, result has 55.4 percent of original size [2020-12-23 01:19:08,303 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:08,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:86, output treesize:82 [2020-12-23 01:19:09,163 WARN L197 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 78 [2020-12-23 01:19:09,165 INFO L348 Elim1Store]: treesize reduction 252, result has 52.1 percent of original size [2020-12-23 01:19:09,165 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 [2020-12-23 01:19:09,170 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:09,341 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-12-23 01:19:09,342 INFO L625 ElimStorePlain]: treesize reduction 154, result has 34.7 percent of original size [2020-12-23 01:19:09,343 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:09,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:86, output treesize:82 [2020-12-23 01:19:10,259 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 45 [2020-12-23 01:19:10,261 INFO L348 Elim1Store]: treesize reduction 544, result has 11.8 percent of original size [2020-12-23 01:19:10,262 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 [2020-12-23 01:19:10,266 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:10,308 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:10,310 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:10,310 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2020-12-23 01:19:10,788 INFO L348 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2020-12-23 01:19:10,789 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 [2020-12-23 01:19:10,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:10,845 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:10,847 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:10,847 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:103, output treesize:99 [2020-12-23 01:19:11,699 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:19:11,700 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:19:11,700 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 [2020-12-23 01:19:11,707 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:11,872 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2020-12-23 01:19:11,873 INFO L625 ElimStorePlain]: treesize reduction 138, result has 43.7 percent of original size [2020-12-23 01:19:11,875 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:11,875 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2020-12-23 01:19:12,660 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:19:12,661 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:19:12,662 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 [2020-12-23 01:19:12,669 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:12,824 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-12-23 01:19:12,826 INFO L625 ElimStorePlain]: treesize reduction 186, result has 36.5 percent of original size [2020-12-23 01:19:12,827 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:12,828 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2020-12-23 01:19:13,631 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:19:13,633 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:19:13,633 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 [2020-12-23 01:19:13,644 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:13,825 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2020-12-23 01:19:13,827 INFO L625 ElimStorePlain]: treesize reduction 198, result has 35.1 percent of original size [2020-12-23 01:19:13,828 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:13,829 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2020-12-23 01:19:14,731 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:19:14,732 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:19:14,733 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 [2020-12-23 01:19:14,740 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:14,908 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-12-23 01:19:14,909 INFO L625 ElimStorePlain]: treesize reduction 180, result has 37.3 percent of original size [2020-12-23 01:19:14,911 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:14,911 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:124, output treesize:107 [2020-12-23 01:19:15,811 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:19:15,812 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:19:15,813 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 [2020-12-23 01:19:15,820 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:15,980 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-12-23 01:19:15,981 INFO L625 ElimStorePlain]: treesize reduction 192, result has 36.2 percent of original size [2020-12-23 01:19:15,983 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:15,983 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:109 [2020-12-23 01:19:16,861 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:19:16,863 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:19:16,863 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 [2020-12-23 01:19:16,870 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:17,031 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-12-23 01:19:17,032 INFO L625 ElimStorePlain]: treesize reduction 198, result has 36.7 percent of original size [2020-12-23 01:19:17,034 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:17,034 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:115 [2020-12-23 01:19:17,887 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:19:17,889 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:19:17,889 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 [2020-12-23 01:19:17,897 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:18,071 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2020-12-23 01:19:18,072 INFO L625 ElimStorePlain]: treesize reduction 230, result has 33.3 percent of original size [2020-12-23 01:19:18,073 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:18,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:115 [2020-12-23 01:19:18,971 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 69 [2020-12-23 01:19:18,973 INFO L348 Elim1Store]: treesize reduction 432, result has 22.7 percent of original size [2020-12-23 01:19:18,973 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 [2020-12-23 01:19:18,980 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:19,147 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2020-12-23 01:19:19,148 INFO L625 ElimStorePlain]: treesize reduction 198, result has 38.3 percent of original size [2020-12-23 01:19:19,150 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:19:19,150 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:123 [2020-12-23 01:19:19,788 INFO L348 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2020-12-23 01:19:19,789 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 [2020-12-23 01:19:19,793 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:19:19,844 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:19:19,847 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 01:19:19,847 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:139, output treesize:96 [2020-12-23 01:19:20,164 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:20,166 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:20,170 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:20,171 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:19:20,174 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:20,177 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:20,178 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:20,178 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:19:20,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 01:19:20,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-23 01:19:20,186 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2020-12-23 01:19:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:19:20,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:19:20,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 37] total 81 [2020-12-23 01:19:20,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653343488] [2020-12-23 01:19:20,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-12-23 01:19:20,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:19:20,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-12-23 01:19:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=5946, Unknown=0, NotChecked=0, Total=6480 [2020-12-23 01:19:20,443 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 81 states. [2020-12-23 01:19:24,156 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-12-23 01:19:24,507 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-12-23 01:19:25,153 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-12-23 01:19:25,553 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-23 01:19:25,903 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-12-23 01:19:26,264 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-12-23 01:19:26,688 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-12-23 01:19:27,070 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-12-23 01:19:27,466 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2020-12-23 01:19:27,951 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-12-23 01:19:28,359 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 46 [2020-12-23 01:19:28,894 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 47 [2020-12-23 01:19:29,585 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 54 [2020-12-23 01:19:30,132 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 57 [2020-12-23 01:19:30,791 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 58 [2020-12-23 01:19:31,067 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2020-12-23 01:19:31,862 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 60 [2020-12-23 01:19:32,542 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 60 [2020-12-23 01:19:33,003 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-12-23 01:19:33,396 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 58 [2020-12-23 01:19:33,935 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 59 [2020-12-23 01:19:34,435 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 59 [2020-12-23 01:19:35,092 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 58 [2020-12-23 01:19:35,636 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 57 [2020-12-23 01:19:36,151 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 57 [2020-12-23 01:19:36,839 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 60 [2020-12-23 01:19:37,601 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 58 [2020-12-23 01:19:38,384 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 56 [2020-12-23 01:19:39,043 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 59 [2020-12-23 01:19:39,768 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2020-12-23 01:19:40,666 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 59 [2020-12-23 01:19:41,319 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 60 [2020-12-23 01:19:41,899 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 62 [2020-12-23 01:19:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:19:42,049 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2020-12-23 01:19:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-23 01:19:42,052 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 71 [2020-12-23 01:19:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:19:42,053 INFO L225 Difference]: With dead ends: 123 [2020-12-23 01:19:42,053 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 01:19:42,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5294 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=1212, Invalid=14538, Unknown=0, NotChecked=0, Total=15750 [2020-12-23 01:19:42,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 01:19:42,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-12-23 01:19:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-23 01:19:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-12-23 01:19:42,073 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 71 [2020-12-23 01:19:42,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:19:42,074 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-12-23 01:19:42,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-12-23 01:19:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-12-23 01:19:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 01:19:42,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:19:42,075 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:19:42,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:19:42,290 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:19:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:19:42,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1416662863, now seen corresponding path program 17 times [2020-12-23 01:19:42,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:19:42,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044854911] [2020-12-23 01:19:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:19:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:19:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 148 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:19:42,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044854911] [2020-12-23 01:19:42,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233710391] [2020-12-23 01:19:42,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:19:43,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-23 01:19:43,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:19:43,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 01:19:43,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:19:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 176 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:19:44,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 01:19:44,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 37 [2020-12-23 01:19:44,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880187919] [2020-12-23 01:19:44,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 01:19:44,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:19:44,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 01:19:44,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 01:19:44,640 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 37 states. [2020-12-23 01:19:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:19:46,596 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2020-12-23 01:19:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 01:19:46,599 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2020-12-23 01:19:46,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:19:46,600 INFO L225 Difference]: With dead ends: 156 [2020-12-23 01:19:46,601 INFO L226 Difference]: Without dead ends: 85 [2020-12-23 01:19:46,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=771, Invalid=2651, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 01:19:46,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-23 01:19:46,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2020-12-23 01:19:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 01:19:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-12-23 01:19:46,622 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 74 [2020-12-23 01:19:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:19:46,622 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-12-23 01:19:46,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 01:19:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-12-23 01:19:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 01:19:46,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:19:46,623 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:19:46,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 01:19:46,838 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:19:46,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:19:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash -284187241, now seen corresponding path program 18 times [2020-12-23 01:19:46,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:19:46,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498263030] [2020-12-23 01:19:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:19:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:19:47,883 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-12-23 01:19:48,045 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-12-23 01:19:48,210 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-12-23 01:19:48,404 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-12-23 01:19:48,604 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-12-23 01:19:48,860 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-12-23 01:19:49,093 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-12-23 01:19:49,371 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-12-23 01:19:49,641 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-12-23 01:19:49,954 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-12-23 01:19:50,255 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-12-23 01:19:50,605 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2020-12-23 01:19:50,965 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-12-23 01:19:51,319 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-23 01:19:51,676 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-12-23 01:19:52,023 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-23 01:19:52,358 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-12-23 01:19:52,704 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-12-23 01:19:53,061 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-12-23 01:19:53,447 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-12-23 01:19:53,790 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-12-23 01:19:54,186 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-12-23 01:19:54,551 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-12-23 01:19:54,926 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2020-12-23 01:19:55,307 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-12-23 01:19:55,670 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-23 01:19:55,988 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-12-23 01:19:56,409 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-23 01:19:56,742 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-12-23 01:19:57,114 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-23 01:19:57,433 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-12-23 01:19:57,769 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 01:19:58,077 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-12-23 01:19:58,439 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-12-23 01:19:58,728 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-23 01:19:59,037 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-23 01:20:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 117 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:20:00,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498263030] [2020-12-23 01:20:00,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052788697] [2020-12-23 01:20:00,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:20:00,727 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-23 01:20:00,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:20:00,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 86 conjunts are in the unsatisfiable core [2020-12-23 01:20:00,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:20:00,760 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 01:20:00,763 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:00,776 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:00,778 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:00,778 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 01:20:00,949 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:20:00,951 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:00,970 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:00,971 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:00,972 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2020-12-23 01:20:01,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:01,307 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 [2020-12-23 01:20:01,309 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:01,334 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:01,336 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:01,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2020-12-23 01:20:01,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:01,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:01,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:01,699 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2020-12-23 01:20:01,701 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:01,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:01,731 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:01,731 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2020-12-23 01:20:02,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,168 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 [2020-12-23 01:20:02,173 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:02,208 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:02,209 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:02,210 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2020-12-23 01:20:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:02,675 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 52 treesize of output 60 [2020-12-23 01:20:02,679 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:02,716 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:02,717 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:02,718 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2020-12-23 01:20:03,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:20:03,234 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 75 [2020-12-23 01:20:03,237 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:20:03,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:20:03,284 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:20:03,284 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:74, output treesize:70