/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-tiling/pr3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 10:24:03,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 10:24:03,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 10:24:03,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 10:24:03,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 10:24:03,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 10:24:03,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 10:24:03,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 10:24:03,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 10:24:03,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 10:24:03,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 10:24:03,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 10:24:03,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 10:24:03,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 10:24:03,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 10:24:03,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 10:24:03,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 10:24:03,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 10:24:03,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 10:24:03,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 10:24:03,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 10:24:03,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 10:24:03,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 10:24:03,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 10:24:03,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 10:24:03,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 10:24:03,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 10:24:03,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 10:24:03,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 10:24:03,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 10:24:03,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 10:24:03,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 10:24:03,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 10:24:03,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 10:24:03,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 10:24:03,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 10:24:03,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 10:24:03,963 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 10:24:03,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 10:24:03,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 10:24:03,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 10:24:03,966 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 10:24:03,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 10:24:03,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 10:24:03,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 10:24:03,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 10:24:03,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 10:24:03,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 10:24:03,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 10:24:03,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 10:24:03,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 10:24:03,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 10:24:03,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 10:24:03,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 10:24:03,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:24:03,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 10:24:03,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 10:24:03,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 10:24:03,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 10:24:03,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 10:24:03,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 10:24:03,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 10:24:03,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 10:24:04,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 10:24:04,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 10:24:04,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 10:24:04,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 10:24:04,593 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 10:24:04,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pr3.c [2021-01-06 10:24:04,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1d7e5920/bac0dc24f58948889c689ac3dd989e50/FLAG48858d3df [2021-01-06 10:24:05,883 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 10:24:05,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-tiling/pr3.c [2021-01-06 10:24:05,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1d7e5920/bac0dc24f58948889c689ac3dd989e50/FLAG48858d3df [2021-01-06 10:24:05,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d1d7e5920/bac0dc24f58948889c689ac3dd989e50 [2021-01-06 10:24:05,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 10:24:05,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 10:24:05,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 10:24:05,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 10:24:06,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 10:24:06,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:24:05" (1/1) ... [2021-01-06 10:24:06,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8a7cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06, skipping insertion in model container [2021-01-06 10:24:06,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 10:24:05" (1/1) ... [2021-01-06 10:24:06,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 10:24:06,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 10:24:06,527 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-tiling/pr3.c[394,407] left hand side expression in assignment: lhs: VariableLHS[~CELLCOUNT~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~volArray~0,],[BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[3]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~volArray~0,],[BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[3]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~volArray~0,],[BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[2]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~volArray~0,],[BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[2]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~volArray~0,],[BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[1]]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~volArray~0,],[BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[1]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 10:24:06,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:24:06,664 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 10:24:06,699 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-tiling/pr3.c[394,407] left hand side expression in assignment: lhs: VariableLHS[~CELLCOUNT~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#volArray~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#volArray~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[3]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#volArray~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#volArray~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[3]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#volArray~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#volArray~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[2]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#volArray~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#volArray~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[2]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#volArray~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#volArray~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[1]]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#volArray~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#volArray~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMUL,IntegerLiteral[3],IdentifierExpression[~i~0,]],IntegerLiteral[1]]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-06 10:24:06,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 10:24:06,860 INFO L208 MainTranslator]: Completed translation [2021-01-06 10:24:06,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06 WrapperNode [2021-01-06 10:24:06,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 10:24:06,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 10:24:06,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 10:24:06,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 10:24:06,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:06,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:07,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 10:24:07,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 10:24:07,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 10:24:07,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 10:24:07,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:07,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:07,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:07,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:07,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:07,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:07,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... [2021-01-06 10:24:07,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 10:24:07,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 10:24:07,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 10:24:07,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 10:24:07,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 10:24:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 10:24:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 10:24:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 10:24:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 10:24:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 10:24:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 10:24:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 10:24:08,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 10:24:08,229 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-06 10:24:08,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:24:08 BoogieIcfgContainer [2021-01-06 10:24:08,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 10:24:08,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 10:24:08,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 10:24:08,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 10:24:08,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 10:24:05" (1/3) ... [2021-01-06 10:24:08,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f931463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:24:08, skipping insertion in model container [2021-01-06 10:24:08,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 10:24:06" (2/3) ... [2021-01-06 10:24:08,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f931463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 10:24:08, skipping insertion in model container [2021-01-06 10:24:08,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 10:24:08" (3/3) ... [2021-01-06 10:24:08,252 INFO L111 eAbstractionObserver]: Analyzing ICFG pr3.c [2021-01-06 10:24:08,268 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 10:24:08,282 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 10:24:08,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 10:24:08,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 10:24:08,440 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 10:24:08,440 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 10:24:08,440 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 10:24:08,440 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 10:24:08,441 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 10:24:08,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 10:24:08,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 10:24:08,506 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-01-06 10:24:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 10:24:08,584 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:08,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:08,593 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:08,616 INFO L82 PathProgramCache]: Analyzing trace with hash -405965127, now seen corresponding path program 1 times [2021-01-06 10:24:08,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:08,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228673568] [2021-01-06 10:24:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:09,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228673568] [2021-01-06 10:24:09,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:09,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 10:24:09,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52300672] [2021-01-06 10:24:09,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 10:24:09,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 10:24:09,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:24:09,288 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2021-01-06 10:24:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:09,313 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2021-01-06 10:24:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 10:24:09,315 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 10:24:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:09,326 INFO L225 Difference]: With dead ends: 45 [2021-01-06 10:24:09,326 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 10:24:09,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 10:24:09,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 10:24:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-06 10:24:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 10:24:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-01-06 10:24:09,374 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 13 [2021-01-06 10:24:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:09,375 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-01-06 10:24:09,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 10:24:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-01-06 10:24:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 10:24:09,376 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:09,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:09,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 10:24:09,377 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:09,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:09,378 INFO L82 PathProgramCache]: Analyzing trace with hash 274093243, now seen corresponding path program 1 times [2021-01-06 10:24:09,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:09,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708851994] [2021-01-06 10:24:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:09,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708851994] [2021-01-06 10:24:09,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:09,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:24:09,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699824178] [2021-01-06 10:24:09,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:24:09,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:09,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:24:09,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:24:09,577 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 4 states. [2021-01-06 10:24:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:09,674 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-01-06 10:24:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:24:09,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 10:24:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:09,679 INFO L225 Difference]: With dead ends: 29 [2021-01-06 10:24:09,679 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 10:24:09,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:24:09,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 10:24:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-01-06 10:24:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 10:24:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-01-06 10:24:09,695 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2021-01-06 10:24:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:09,696 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-01-06 10:24:09,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:24:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-01-06 10:24:09,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 10:24:09,699 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:09,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:09,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 10:24:09,703 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:09,706 INFO L82 PathProgramCache]: Analyzing trace with hash 274152825, now seen corresponding path program 1 times [2021-01-06 10:24:09,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:09,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66820226] [2021-01-06 10:24:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:10,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66820226] [2021-01-06 10:24:10,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:10,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 10:24:10,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955840236] [2021-01-06 10:24:10,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 10:24:10,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:10,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 10:24:10,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:24:10,026 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 5 states. [2021-01-06 10:24:10,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:10,091 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-01-06 10:24:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 10:24:10,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 10:24:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:10,093 INFO L225 Difference]: With dead ends: 38 [2021-01-06 10:24:10,093 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 10:24:10,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:24:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 10:24:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-01-06 10:24:10,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 10:24:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-01-06 10:24:10,099 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2021-01-06 10:24:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:10,099 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-01-06 10:24:10,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 10:24:10,100 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-01-06 10:24:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 10:24:10,101 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:10,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:10,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 10:24:10,101 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:10,102 INFO L82 PathProgramCache]: Analyzing trace with hash 40395978, now seen corresponding path program 1 times [2021-01-06 10:24:10,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:10,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881460532] [2021-01-06 10:24:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:10,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881460532] [2021-01-06 10:24:10,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794343688] [2021-01-06 10:24:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:10,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 10:24:10,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:10,676 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:10,677 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:10,707 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:10,709 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:10,710 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2021-01-06 10:24:10,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:10,750 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 29 treesize of output 28 [2021-01-06 10:24:10,753 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:10,762 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:10,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:10,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2021-01-06 10:24:10,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:10,779 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-06 10:24:10,781 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:10,788 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:10,790 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:10,791 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:11 [2021-01-06 10:24:10,851 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:10,861 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:10,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:10,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-01-06 10:24:10,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152659263] [2021-01-06 10:24:10,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 10:24:10,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:10,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 10:24:10,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-01-06 10:24:10,887 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 15 states. [2021-01-06 10:24:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:11,627 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2021-01-06 10:24:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 10:24:11,628 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2021-01-06 10:24:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:11,633 INFO L225 Difference]: With dead ends: 107 [2021-01-06 10:24:11,633 INFO L226 Difference]: Without dead ends: 97 [2021-01-06 10:24:11,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=650, Unknown=0, NotChecked=0, Total=870 [2021-01-06 10:24:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-06 10:24:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 31. [2021-01-06 10:24:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 10:24:11,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-01-06 10:24:11,651 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 18 [2021-01-06 10:24:11,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:11,652 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-01-06 10:24:11,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 10:24:11,652 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-01-06 10:24:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 10:24:11,653 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:11,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:11,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:11,867 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash 741460556, now seen corresponding path program 1 times [2021-01-06 10:24:11,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:11,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261355643] [2021-01-06 10:24:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:11,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261355643] [2021-01-06 10:24:11,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:11,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:24:11,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113347680] [2021-01-06 10:24:11,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:24:11,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:11,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:24:11,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:24:11,937 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand 4 states. [2021-01-06 10:24:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:11,995 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-01-06 10:24:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:24:11,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-01-06 10:24:11,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:12,003 INFO L225 Difference]: With dead ends: 57 [2021-01-06 10:24:12,003 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 10:24:12,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:24:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 10:24:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2021-01-06 10:24:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 10:24:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-01-06 10:24:12,025 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2021-01-06 10:24:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:12,025 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-01-06 10:24:12,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:24:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-01-06 10:24:12,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 10:24:12,030 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:12,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:12,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 10:24:12,032 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:12,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1421518926, now seen corresponding path program 1 times [2021-01-06 10:24:12,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:12,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182818928] [2021-01-06 10:24:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:12,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182818928] [2021-01-06 10:24:12,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:12,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:24:12,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430771365] [2021-01-06 10:24:12,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:24:12,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:12,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:24:12,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:24:12,135 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 4 states. [2021-01-06 10:24:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:12,184 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-01-06 10:24:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:24:12,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-01-06 10:24:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:12,186 INFO L225 Difference]: With dead ends: 57 [2021-01-06 10:24:12,186 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 10:24:12,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:24:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 10:24:12,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2021-01-06 10:24:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 10:24:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-01-06 10:24:12,192 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2021-01-06 10:24:12,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:12,193 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-01-06 10:24:12,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:24:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-01-06 10:24:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 10:24:12,194 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:12,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:12,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 10:24:12,194 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:12,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1028491916, now seen corresponding path program 1 times [2021-01-06 10:24:12,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:12,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358312491] [2021-01-06 10:24:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:12,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358312491] [2021-01-06 10:24:12,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057856693] [2021-01-06 10:24:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:12,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 10:24:12,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:12,471 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:12,472 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:12,480 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:12,481 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:12,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-06 10:24:12,502 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-01-06 10:24:12,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:12,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:12,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:12,517 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 24 treesize of output 28 [2021-01-06 10:24:12,519 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:12,524 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:12,526 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:12,535 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:12,536 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:12,537 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:47, output treesize:35 [2021-01-06 10:24:12,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:12,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:12,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:12,588 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:12,589 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 58 [2021-01-06 10:24:12,592 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:12,613 INFO L625 ElimStorePlain]: treesize reduction 7, result has 89.2 percent of original size [2021-01-06 10:24:12,614 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:12,615 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:66, output treesize:58 [2021-01-06 10:24:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:12,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:12,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 13 [2021-01-06 10:24:12,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740590876] [2021-01-06 10:24:12,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 10:24:12,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:12,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 10:24:12,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-01-06 10:24:12,734 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 13 states. [2021-01-06 10:24:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:13,415 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2021-01-06 10:24:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 10:24:13,416 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2021-01-06 10:24:13,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:13,417 INFO L225 Difference]: With dead ends: 88 [2021-01-06 10:24:13,417 INFO L226 Difference]: Without dead ends: 86 [2021-01-06 10:24:13,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2021-01-06 10:24:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-01-06 10:24:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 46. [2021-01-06 10:24:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 10:24:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-01-06 10:24:13,427 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 18 [2021-01-06 10:24:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:13,427 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-01-06 10:24:13,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 10:24:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2021-01-06 10:24:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 10:24:13,429 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:13,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:13,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:13,643 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash 85282267, now seen corresponding path program 1 times [2021-01-06 10:24:13,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:13,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695965206] [2021-01-06 10:24:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:13,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695965206] [2021-01-06 10:24:13,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:13,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:24:13,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657744327] [2021-01-06 10:24:13,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 10:24:13,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:13,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 10:24:13,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:13,696 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 3 states. [2021-01-06 10:24:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:13,730 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2021-01-06 10:24:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 10:24:13,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-01-06 10:24:13,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:13,732 INFO L225 Difference]: With dead ends: 72 [2021-01-06 10:24:13,732 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 10:24:13,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:13,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 10:24:13,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2021-01-06 10:24:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 10:24:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2021-01-06 10:24:13,743 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 23 [2021-01-06 10:24:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:13,744 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2021-01-06 10:24:13,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 10:24:13,744 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2021-01-06 10:24:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 10:24:13,745 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:13,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:13,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 10:24:13,746 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:13,747 INFO L82 PathProgramCache]: Analyzing trace with hash 367135703, now seen corresponding path program 1 times [2021-01-06 10:24:13,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:13,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368828636] [2021-01-06 10:24:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:13,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368828636] [2021-01-06 10:24:13,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:13,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:24:13,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027043564] [2021-01-06 10:24:13,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 10:24:13,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:13,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 10:24:13,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:13,801 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 3 states. [2021-01-06 10:24:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:13,838 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2021-01-06 10:24:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 10:24:13,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-01-06 10:24:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:13,840 INFO L225 Difference]: With dead ends: 66 [2021-01-06 10:24:13,840 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 10:24:13,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 10:24:13,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2021-01-06 10:24:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 10:24:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-01-06 10:24:13,854 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 23 [2021-01-06 10:24:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:13,854 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-01-06 10:24:13,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 10:24:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-01-06 10:24:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 10:24:13,856 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:13,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:13,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 10:24:13,856 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:13,857 INFO L82 PathProgramCache]: Analyzing trace with hash -340290083, now seen corresponding path program 1 times [2021-01-06 10:24:13,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:13,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460173698] [2021-01-06 10:24:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:14,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460173698] [2021-01-06 10:24:14,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404007207] [2021-01-06 10:24:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:14,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 10:24:14,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:14,307 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:14,308 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:14,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:14,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:14,322 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2021-01-06 10:24:14,382 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-01-06 10:24:14,384 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-01-06 10:24:14,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:14,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:14,400 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:14,401 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:9 [2021-01-06 10:24:14,495 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:14,500 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:14,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:14,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2021-01-06 10:24:14,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113940484] [2021-01-06 10:24:14,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 10:24:14,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:14,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 10:24:14,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-01-06 10:24:14,532 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 15 states. [2021-01-06 10:24:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:15,311 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2021-01-06 10:24:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 10:24:15,312 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2021-01-06 10:24:15,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:15,313 INFO L225 Difference]: With dead ends: 121 [2021-01-06 10:24:15,313 INFO L226 Difference]: Without dead ends: 111 [2021-01-06 10:24:15,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2021-01-06 10:24:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-06 10:24:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 52. [2021-01-06 10:24:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 10:24:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2021-01-06 10:24:15,333 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 24 [2021-01-06 10:24:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:15,333 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2021-01-06 10:24:15,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 10:24:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2021-01-06 10:24:15,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 10:24:15,334 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:15,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:15,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 10:24:15,536 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1361358437, now seen corresponding path program 1 times [2021-01-06 10:24:15,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:15,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831446677] [2021-01-06 10:24:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:24:15,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831446677] [2021-01-06 10:24:15,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:15,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 10:24:15,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531070301] [2021-01-06 10:24:15,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 10:24:15,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:15,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 10:24:15,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 10:24:15,610 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 4 states. [2021-01-06 10:24:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:15,663 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2021-01-06 10:24:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 10:24:15,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-01-06 10:24:15,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:15,666 INFO L225 Difference]: With dead ends: 83 [2021-01-06 10:24:15,666 INFO L226 Difference]: Without dead ends: 65 [2021-01-06 10:24:15,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 10:24:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-06 10:24:15,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2021-01-06 10:24:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 10:24:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-01-06 10:24:15,674 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 24 [2021-01-06 10:24:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:15,674 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-01-06 10:24:15,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 10:24:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-01-06 10:24:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-06 10:24:15,675 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:15,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:15,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 10:24:15,676 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:15,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1653745181, now seen corresponding path program 1 times [2021-01-06 10:24:15,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:15,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371021377] [2021-01-06 10:24:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:15,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371021377] [2021-01-06 10:24:15,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35797364] [2021-01-06 10:24:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:16,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 10:24:16,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:16,060 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:16,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:16,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:16,068 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:16,069 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2021-01-06 10:24:16,107 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-01-06 10:24:16,107 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-01-06 10:24:16,112 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:16,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:16,119 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:16,119 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 10:24:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:16,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:16,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-01-06 10:24:16,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658946764] [2021-01-06 10:24:16,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-06 10:24:16,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:16,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-06 10:24:16,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-01-06 10:24:16,253 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 16 states. [2021-01-06 10:24:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:17,345 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2021-01-06 10:24:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-06 10:24:17,346 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2021-01-06 10:24:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:17,347 INFO L225 Difference]: With dead ends: 134 [2021-01-06 10:24:17,348 INFO L226 Difference]: Without dead ends: 132 [2021-01-06 10:24:17,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=349, Invalid=1133, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 10:24:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-01-06 10:24:17,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 67. [2021-01-06 10:24:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-06 10:24:17,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2021-01-06 10:24:17,360 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 24 [2021-01-06 10:24:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:17,360 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2021-01-06 10:24:17,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-06 10:24:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2021-01-06 10:24:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 10:24:17,362 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:17,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:17,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:17,577 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:17,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:17,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1421348308, now seen corresponding path program 1 times [2021-01-06 10:24:17,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:17,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030577336] [2021-01-06 10:24:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:24:17,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030577336] [2021-01-06 10:24:17,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:17,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:24:17,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097259659] [2021-01-06 10:24:17,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 10:24:17,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:17,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 10:24:17,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:17,612 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand 3 states. [2021-01-06 10:24:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:17,638 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2021-01-06 10:24:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 10:24:17,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-01-06 10:24:17,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:17,639 INFO L225 Difference]: With dead ends: 95 [2021-01-06 10:24:17,639 INFO L226 Difference]: Without dead ends: 77 [2021-01-06 10:24:17,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-06 10:24:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2021-01-06 10:24:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-06 10:24:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2021-01-06 10:24:17,650 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 29 [2021-01-06 10:24:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:17,651 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2021-01-06 10:24:17,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 10:24:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2021-01-06 10:24:17,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 10:24:17,652 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:17,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:17,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 10:24:17,653 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:17,653 INFO L82 PathProgramCache]: Analyzing trace with hash -795226578, now seen corresponding path program 1 times [2021-01-06 10:24:17,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:17,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146909703] [2021-01-06 10:24:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 10:24:17,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146909703] [2021-01-06 10:24:17,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:17,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:24:17,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906188236] [2021-01-06 10:24:17,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 10:24:17,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 10:24:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:17,684 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand 3 states. [2021-01-06 10:24:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:17,712 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2021-01-06 10:24:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 10:24:17,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-01-06 10:24:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:17,714 INFO L225 Difference]: With dead ends: 90 [2021-01-06 10:24:17,714 INFO L226 Difference]: Without dead ends: 72 [2021-01-06 10:24:17,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-06 10:24:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2021-01-06 10:24:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-06 10:24:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2021-01-06 10:24:17,725 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 29 [2021-01-06 10:24:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:17,726 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2021-01-06 10:24:17,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 10:24:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2021-01-06 10:24:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 10:24:17,727 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:17,727 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:17,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 10:24:17,727 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:17,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1546939568, now seen corresponding path program 2 times [2021-01-06 10:24:17,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:17,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578029617] [2021-01-06 10:24:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:17,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578029617] [2021-01-06 10:24:17,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924245638] [2021-01-06 10:24:17,891 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:17,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:24:17,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:17,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 10:24:17,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:18,008 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-06 10:24:18,010 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:18,015 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:18,017 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:18,017 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:9 [2021-01-06 10:24:18,156 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:18,181 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:18,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:18,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-01-06 10:24:18,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39214965] [2021-01-06 10:24:18,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-06 10:24:18,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:18,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-06 10:24:18,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-01-06 10:24:18,193 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 15 states. [2021-01-06 10:24:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:18,732 INFO L93 Difference]: Finished difference Result 143 states and 163 transitions. [2021-01-06 10:24:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 10:24:18,733 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2021-01-06 10:24:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:18,735 INFO L225 Difference]: With dead ends: 143 [2021-01-06 10:24:18,735 INFO L226 Difference]: Without dead ends: 119 [2021-01-06 10:24:18,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2021-01-06 10:24:18,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-01-06 10:24:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 74. [2021-01-06 10:24:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 10:24:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2021-01-06 10:24:18,750 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 30 [2021-01-06 10:24:18,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:18,750 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2021-01-06 10:24:18,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-06 10:24:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2021-01-06 10:24:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 10:24:18,751 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:18,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:18,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 10:24:18,967 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:18,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:18,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1969641394, now seen corresponding path program 1 times [2021-01-06 10:24:18,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:18,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938783010] [2021-01-06 10:24:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:19,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938783010] [2021-01-06 10:24:19,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085556931] [2021-01-06 10:24:19,109 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:19,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 10:24:19,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:19,203 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-06 10:24:19,204 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:19,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:19,207 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:19,207 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2021-01-06 10:24:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:19,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:19,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-01-06 10:24:19,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920602856] [2021-01-06 10:24:19,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 10:24:19,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 10:24:19,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-01-06 10:24:19,313 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 12 states. [2021-01-06 10:24:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:20,095 INFO L93 Difference]: Finished difference Result 173 states and 198 transitions. [2021-01-06 10:24:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 10:24:20,096 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2021-01-06 10:24:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:20,097 INFO L225 Difference]: With dead ends: 173 [2021-01-06 10:24:20,098 INFO L226 Difference]: Without dead ends: 171 [2021-01-06 10:24:20,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2021-01-06 10:24:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-01-06 10:24:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 93. [2021-01-06 10:24:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-06 10:24:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2021-01-06 10:24:20,119 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 30 [2021-01-06 10:24:20,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:20,122 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2021-01-06 10:24:20,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 10:24:20,123 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2021-01-06 10:24:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 10:24:20,127 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:20,127 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:20,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:20,344 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:20,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:20,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1896113853, now seen corresponding path program 3 times [2021-01-06 10:24:20,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:20,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946608064] [2021-01-06 10:24:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946608064] [2021-01-06 10:24:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113020234] [2021-01-06 10:24:20,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:20,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 10:24:20,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:20,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 10:24:20,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:21,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:21,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-01-06 10:24:21,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416620481] [2021-01-06 10:24:21,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 10:24:21,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:21,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 10:24:21,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-01-06 10:24:21,241 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 19 states. [2021-01-06 10:24:21,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:21,569 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2021-01-06 10:24:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 10:24:21,569 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2021-01-06 10:24:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:21,571 INFO L225 Difference]: With dead ends: 184 [2021-01-06 10:24:21,571 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 10:24:21,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-01-06 10:24:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 10:24:21,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2021-01-06 10:24:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-01-06 10:24:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-01-06 10:24:21,587 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 36 [2021-01-06 10:24:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:21,587 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-01-06 10:24:21,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 10:24:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-01-06 10:24:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 10:24:21,588 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:21,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:21,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 10:24:21,803 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash -351557998, now seen corresponding path program 1 times [2021-01-06 10:24:21,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:21,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215513280] [2021-01-06 10:24:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-01-06 10:24:21,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215513280] [2021-01-06 10:24:21,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 10:24:21,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 10:24:21,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583026745] [2021-01-06 10:24:21,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 10:24:21,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:21,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 10:24:21,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:21,859 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand 3 states. [2021-01-06 10:24:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:21,891 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2021-01-06 10:24:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 10:24:21,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-01-06 10:24:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:21,893 INFO L225 Difference]: With dead ends: 150 [2021-01-06 10:24:21,893 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 10:24:21,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 10:24:21,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 10:24:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 93. [2021-01-06 10:24:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-01-06 10:24:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2021-01-06 10:24:21,906 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 40 [2021-01-06 10:24:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:21,907 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2021-01-06 10:24:21,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 10:24:21,907 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2021-01-06 10:24:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 10:24:21,908 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:21,909 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:21,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 10:24:21,909 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:21,909 INFO L82 PathProgramCache]: Analyzing trace with hash -754137390, now seen corresponding path program 4 times [2021-01-06 10:24:21,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:21,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625967513] [2021-01-06 10:24:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:22,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625967513] [2021-01-06 10:24:22,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666337378] [2021-01-06 10:24:22,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:22,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:24:22,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:22,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 42 conjunts are in the unsatisfiable core [2021-01-06 10:24:22,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:22,657 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 5 treesize of output 3 [2021-01-06 10:24:22,661 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:22,666 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:22,668 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:22,669 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:10 [2021-01-06 10:24:22,867 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:22,868 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:22,882 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:22,883 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:22,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:25 [2021-01-06 10:24:22,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:22,934 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 29 treesize of output 28 [2021-01-06 10:24:22,935 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:22,950 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:22,952 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:22,953 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2021-01-06 10:24:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:22,966 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-06 10:24:22,967 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:22,978 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:22,979 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:22,980 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:31 [2021-01-06 10:24:23,256 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:23,260 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:23,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:23,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2021-01-06 10:24:23,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826925723] [2021-01-06 10:24:23,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-06 10:24:23,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:23,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-06 10:24:23,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-01-06 10:24:23,342 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 25 states. [2021-01-06 10:24:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:25,001 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2021-01-06 10:24:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-06 10:24:25,002 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 41 [2021-01-06 10:24:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:25,003 INFO L225 Difference]: With dead ends: 143 [2021-01-06 10:24:25,003 INFO L226 Difference]: Without dead ends: 133 [2021-01-06 10:24:25,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=277, Invalid=1363, Unknown=0, NotChecked=0, Total=1640 [2021-01-06 10:24:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-01-06 10:24:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2021-01-06 10:24:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-06 10:24:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2021-01-06 10:24:25,018 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 41 [2021-01-06 10:24:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:25,018 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2021-01-06 10:24:25,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-06 10:24:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2021-01-06 10:24:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 10:24:25,019 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:25,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:25,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:25,225 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:25,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1443850258, now seen corresponding path program 2 times [2021-01-06 10:24:25,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:25,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784336091] [2021-01-06 10:24:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:25,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784336091] [2021-01-06 10:24:25,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686461017] [2021-01-06 10:24:25,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:25,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:24:25,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:25,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 10:24:25,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:25,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:25,825 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:25,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:25,836 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:25,836 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2021-01-06 10:24:25,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:25,879 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 29 treesize of output 28 [2021-01-06 10:24:25,882 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:25,891 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:25,893 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:25,894 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2021-01-06 10:24:25,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:25,904 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-06 10:24:25,905 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:25,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:25,914 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:25,914 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2021-01-06 10:24:26,152 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:26,155 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:26,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:26,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-01-06 10:24:26,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653867324] [2021-01-06 10:24:26,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 10:24:26,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:26,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 10:24:26,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-01-06 10:24:26,188 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand 23 states. [2021-01-06 10:24:29,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:29,064 INFO L93 Difference]: Finished difference Result 261 states and 285 transitions. [2021-01-06 10:24:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-06 10:24:29,064 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 41 [2021-01-06 10:24:29,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:29,066 INFO L225 Difference]: With dead ends: 261 [2021-01-06 10:24:29,066 INFO L226 Difference]: Without dead ends: 251 [2021-01-06 10:24:29,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=538, Invalid=3368, Unknown=0, NotChecked=0, Total=3906 [2021-01-06 10:24:29,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-01-06 10:24:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 111. [2021-01-06 10:24:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-01-06 10:24:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2021-01-06 10:24:29,084 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 41 [2021-01-06 10:24:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:29,085 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2021-01-06 10:24:29,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 10:24:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2021-01-06 10:24:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 10:24:29,086 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:29,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:29,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:29,289 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash 4210706, now seen corresponding path program 1 times [2021-01-06 10:24:29,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:29,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647476662] [2021-01-06 10:24:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:29,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647476662] [2021-01-06 10:24:29,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133878459] [2021-01-06 10:24:29,587 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:29,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 10:24:29,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:29,682 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:29,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:29,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:29,691 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:29,691 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2021-01-06 10:24:29,712 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-01-06 10:24:29,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:29,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:29,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:29,721 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 24 treesize of output 28 [2021-01-06 10:24:29,723 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:29,728 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:29,729 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:29,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:29,741 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:29,742 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:50, output treesize:38 [2021-01-06 10:24:29,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:29,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:29,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:29,797 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:29,797 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-01-06 10:24:29,799 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:29,817 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:29,820 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:24:29,820 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:50 [2021-01-06 10:24:30,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:24:30,256 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:24:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:30,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:30,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 19 [2021-01-06 10:24:30,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289939427] [2021-01-06 10:24:30,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-06 10:24:30,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:30,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-06 10:24:30,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-01-06 10:24:30,298 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand 19 states. [2021-01-06 10:24:32,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:32,387 INFO L93 Difference]: Finished difference Result 221 states and 246 transitions. [2021-01-06 10:24:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-01-06 10:24:32,388 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2021-01-06 10:24:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:32,390 INFO L225 Difference]: With dead ends: 221 [2021-01-06 10:24:32,391 INFO L226 Difference]: Without dead ends: 219 [2021-01-06 10:24:32,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=450, Invalid=1806, Unknown=0, NotChecked=0, Total=2256 [2021-01-06 10:24:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-01-06 10:24:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 123. [2021-01-06 10:24:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-01-06 10:24:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2021-01-06 10:24:32,415 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 41 [2021-01-06 10:24:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:32,416 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2021-01-06 10:24:32,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-06 10:24:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2021-01-06 10:24:32,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 10:24:32,417 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:32,418 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:32,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:32,634 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2067550693, now seen corresponding path program 5 times [2021-01-06 10:24:32,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:32,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618863704] [2021-01-06 10:24:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:33,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618863704] [2021-01-06 10:24:33,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691911320] [2021-01-06 10:24:33,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:33,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-06 10:24:33,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:33,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 10:24:33,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:33,250 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:33,252 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:33,264 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,265 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 10:24:33,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,323 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 29 treesize of output 28 [2021-01-06 10:24:33,325 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,339 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:33,341 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,341 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2021-01-06 10:24:33,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,483 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:33,484 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-01-06 10:24:33,487 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,503 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:33,506 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,507 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:31 [2021-01-06 10:24:33,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,529 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:33,529 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-01-06 10:24:33,533 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,546 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:33,548 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,549 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2021-01-06 10:24:33,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:24:33,629 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:33,629 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2021-01-06 10:24:33,632 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,643 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:33,645 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:33,645 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34 [2021-01-06 10:24:33,898 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:34,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:34,437 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:34,442 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:24:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:34,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:34,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 29 [2021-01-06 10:24:34,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497790504] [2021-01-06 10:24:34,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-06 10:24:34,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:34,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-06 10:24:34,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2021-01-06 10:24:34,483 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand 29 states. [2021-01-06 10:24:37,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:37,866 INFO L93 Difference]: Finished difference Result 215 states and 236 transitions. [2021-01-06 10:24:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 10:24:37,872 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 47 [2021-01-06 10:24:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:37,874 INFO L225 Difference]: With dead ends: 215 [2021-01-06 10:24:37,874 INFO L226 Difference]: Without dead ends: 205 [2021-01-06 10:24:37,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=323, Invalid=2029, Unknown=0, NotChecked=0, Total=2352 [2021-01-06 10:24:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-01-06 10:24:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 145. [2021-01-06 10:24:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-01-06 10:24:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 163 transitions. [2021-01-06 10:24:37,935 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 163 transitions. Word has length 47 [2021-01-06 10:24:37,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:37,935 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 163 transitions. [2021-01-06 10:24:37,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-06 10:24:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 163 transitions. [2021-01-06 10:24:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 10:24:37,937 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:37,938 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:38,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-06 10:24:38,153 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:38,155 INFO L82 PathProgramCache]: Analyzing trace with hash 965804837, now seen corresponding path program 3 times [2021-01-06 10:24:38,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:38,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662173072] [2021-01-06 10:24:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:38,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662173072] [2021-01-06 10:24:38,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284869397] [2021-01-06 10:24:38,555 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:38,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 10:24:38,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:38,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 10:24:38,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:38,812 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:38,813 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:38,827 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:38,829 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:38,830 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2021-01-06 10:24:38,854 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-01-06 10:24:38,883 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:24:38,884 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-01-06 10:24:38,887 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:38,895 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:38,897 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:38,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:38,914 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:38,915 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:43, output treesize:31 [2021-01-06 10:24:39,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:39,576 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:39,580 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:39,583 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:24:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:39,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:39,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2021-01-06 10:24:39,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540356668] [2021-01-06 10:24:39,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 10:24:39,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:39,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 10:24:39,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-01-06 10:24:39,630 INFO L87 Difference]: Start difference. First operand 145 states and 163 transitions. Second operand 21 states. [2021-01-06 10:24:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:42,545 INFO L93 Difference]: Finished difference Result 325 states and 354 transitions. [2021-01-06 10:24:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-01-06 10:24:42,551 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 47 [2021-01-06 10:24:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:42,553 INFO L225 Difference]: With dead ends: 325 [2021-01-06 10:24:42,553 INFO L226 Difference]: Without dead ends: 315 [2021-01-06 10:24:42,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=705, Invalid=4551, Unknown=0, NotChecked=0, Total=5256 [2021-01-06 10:24:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-01-06 10:24:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 135. [2021-01-06 10:24:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-01-06 10:24:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2021-01-06 10:24:42,581 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 47 [2021-01-06 10:24:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:42,582 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2021-01-06 10:24:42,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 10:24:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2021-01-06 10:24:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-06 10:24:42,582 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:42,583 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:42,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:42,794 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:42,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:42,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1171421669, now seen corresponding path program 2 times [2021-01-06 10:24:42,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:42,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526014287] [2021-01-06 10:24:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:42,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526014287] [2021-01-06 10:24:42,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434847572] [2021-01-06 10:24:42,968 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:43,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:24:43,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:43,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 10:24:43,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:43,060 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:43,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:43,068 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:43,068 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:43,069 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 10:24:43,084 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-01-06 10:24:43,101 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:24:43,102 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-01-06 10:24:43,104 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:43,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:43,110 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:43,121 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:43,122 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:24:43,123 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:31 [2021-01-06 10:24:43,575 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:24:43,581 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:24:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:43,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:43,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 22 [2021-01-06 10:24:43,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707602285] [2021-01-06 10:24:43,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 10:24:43,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:43,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 10:24:43,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-01-06 10:24:43,629 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand 22 states. [2021-01-06 10:24:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:46,517 INFO L93 Difference]: Finished difference Result 347 states and 389 transitions. [2021-01-06 10:24:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-01-06 10:24:46,518 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 47 [2021-01-06 10:24:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:46,520 INFO L225 Difference]: With dead ends: 347 [2021-01-06 10:24:46,521 INFO L226 Difference]: Without dead ends: 345 [2021-01-06 10:24:46,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2275 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=851, Invalid=5791, Unknown=0, NotChecked=0, Total=6642 [2021-01-06 10:24:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-01-06 10:24:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 147. [2021-01-06 10:24:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-06 10:24:46,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 164 transitions. [2021-01-06 10:24:46,556 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 164 transitions. Word has length 47 [2021-01-06 10:24:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:46,556 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 164 transitions. [2021-01-06 10:24:46,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 10:24:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 164 transitions. [2021-01-06 10:24:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 10:24:46,558 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:46,558 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:46,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-06 10:24:46,772 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:46,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:46,773 INFO L82 PathProgramCache]: Analyzing trace with hash -210894152, now seen corresponding path program 6 times [2021-01-06 10:24:46,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:46,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082330233] [2021-01-06 10:24:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:47,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082330233] [2021-01-06 10:24:47,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353248444] [2021-01-06 10:24:47,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:47,150 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-01-06 10:24:47,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:47,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 10:24:47,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:47,202 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-06 10:24:47,206 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:47,211 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:47,212 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:47,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2021-01-06 10:24:47,415 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:47,424 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:47,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:47,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 21 [2021-01-06 10:24:47,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560319063] [2021-01-06 10:24:47,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 10:24:47,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:47,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 10:24:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-01-06 10:24:47,495 INFO L87 Difference]: Start difference. First operand 147 states and 164 transitions. Second operand 21 states. [2021-01-06 10:24:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:49,022 INFO L93 Difference]: Finished difference Result 251 states and 274 transitions. [2021-01-06 10:24:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-06 10:24:49,024 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 53 [2021-01-06 10:24:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:49,026 INFO L225 Difference]: With dead ends: 251 [2021-01-06 10:24:49,026 INFO L226 Difference]: Without dead ends: 241 [2021-01-06 10:24:49,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2021-01-06 10:24:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-01-06 10:24:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 153. [2021-01-06 10:24:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-01-06 10:24:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 170 transitions. [2021-01-06 10:24:49,047 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 170 transitions. Word has length 53 [2021-01-06 10:24:49,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:49,047 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 170 transitions. [2021-01-06 10:24:49,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-01-06 10:24:49,048 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 170 transitions. [2021-01-06 10:24:49,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 10:24:49,048 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:49,048 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:49,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:49,249 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:49,250 INFO L82 PathProgramCache]: Analyzing trace with hash 189318136, now seen corresponding path program 4 times [2021-01-06 10:24:49,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:49,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159745357] [2021-01-06 10:24:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:49,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159745357] [2021-01-06 10:24:49,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934471701] [2021-01-06 10:24:49,446 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:49,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:24:49,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:49,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 10:24:49,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:49,564 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:49,565 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:49,572 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:49,573 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:24:49,573 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2021-01-06 10:24:49,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:49,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:24:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:49,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:49,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2021-01-06 10:24:49,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264526220] [2021-01-06 10:24:49,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-06 10:24:49,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:49,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-06 10:24:49,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-01-06 10:24:49,803 INFO L87 Difference]: Start difference. First operand 153 states and 170 transitions. Second operand 20 states. [2021-01-06 10:24:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:54,552 INFO L93 Difference]: Finished difference Result 488 states and 546 transitions. [2021-01-06 10:24:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-01-06 10:24:54,553 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2021-01-06 10:24:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:54,555 INFO L225 Difference]: With dead ends: 488 [2021-01-06 10:24:54,555 INFO L226 Difference]: Without dead ends: 486 [2021-01-06 10:24:54,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6033 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1751, Invalid=13999, Unknown=0, NotChecked=0, Total=15750 [2021-01-06 10:24:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-01-06 10:24:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 165. [2021-01-06 10:24:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-01-06 10:24:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 182 transitions. [2021-01-06 10:24:54,591 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 182 transitions. Word has length 53 [2021-01-06 10:24:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:54,591 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 182 transitions. [2021-01-06 10:24:54,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-06 10:24:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 182 transitions. [2021-01-06 10:24:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 10:24:54,592 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:54,592 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:54,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-06 10:24:54,803 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:54,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1520531125, now seen corresponding path program 7 times [2021-01-06 10:24:54,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:54,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881079801] [2021-01-06 10:24:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 83 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:55,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881079801] [2021-01-06 10:24:55,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583482155] [2021-01-06 10:24:55,427 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:55,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 10:24:55,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 114 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:56,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:56,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-01-06 10:24:56,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237246226] [2021-01-06 10:24:56,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 10:24:56,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:56,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 10:24:56,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-01-06 10:24:56,062 INFO L87 Difference]: Start difference. First operand 165 states and 182 transitions. Second operand 27 states. [2021-01-06 10:24:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:24:56,593 INFO L93 Difference]: Finished difference Result 330 states and 361 transitions. [2021-01-06 10:24:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 10:24:56,594 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 59 [2021-01-06 10:24:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:24:56,596 INFO L225 Difference]: With dead ends: 330 [2021-01-06 10:24:56,596 INFO L226 Difference]: Without dead ends: 201 [2021-01-06 10:24:56,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-01-06 10:24:56,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-01-06 10:24:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 185. [2021-01-06 10:24:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-01-06 10:24:56,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 202 transitions. [2021-01-06 10:24:56,630 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 202 transitions. Word has length 59 [2021-01-06 10:24:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:24:56,630 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 202 transitions. [2021-01-06 10:24:56,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-06 10:24:56,630 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 202 transitions. [2021-01-06 10:24:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 10:24:56,631 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:24:56,631 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:24:56,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-06 10:24:56,836 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:24:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:24:56,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1764330204, now seen corresponding path program 8 times [2021-01-06 10:24:56,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:24:56,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290468218] [2021-01-06 10:24:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:24:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:24:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:57,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290468218] [2021-01-06 10:24:57,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955422478] [2021-01-06 10:24:57,232 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:24:57,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:24:57,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:24:57,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 44 conjunts are in the unsatisfiable core [2021-01-06 10:24:57,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:24:57,524 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:24:57,525 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:57,537 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:57,538 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:57,539 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2021-01-06 10:24:57,594 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:24:57,594 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-01-06 10:24:57,602 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:57,613 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:57,615 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:57,615 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:22 [2021-01-06 10:24:57,634 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-01-06 10:24:57,635 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-01-06 10:24:57,636 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:24:57,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:24:57,646 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:24:57,647 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:28 [2021-01-06 10:24:58,275 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:58,277 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:24:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:24:58,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:24:58,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2021-01-06 10:24:58,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555085568] [2021-01-06 10:24:58,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-06 10:24:58,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:24:58,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-06 10:24:58,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 10:24:58,364 INFO L87 Difference]: Start difference. First operand 185 states and 202 transitions. Second operand 35 states. [2021-01-06 10:25:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:25:01,313 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2021-01-06 10:25:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-06 10:25:01,314 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 64 [2021-01-06 10:25:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:25:01,319 INFO L225 Difference]: With dead ends: 269 [2021-01-06 10:25:01,319 INFO L226 Difference]: Without dead ends: 259 [2021-01-06 10:25:01,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=452, Invalid=3580, Unknown=0, NotChecked=0, Total=4032 [2021-01-06 10:25:01,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-01-06 10:25:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 191. [2021-01-06 10:25:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2021-01-06 10:25:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 208 transitions. [2021-01-06 10:25:01,354 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 208 transitions. Word has length 64 [2021-01-06 10:25:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:25:01,354 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 208 transitions. [2021-01-06 10:25:01,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-06 10:25:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 208 transitions. [2021-01-06 10:25:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 10:25:01,355 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:25:01,355 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:25:01,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-06 10:25:01,570 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:25:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:25:01,571 INFO L82 PathProgramCache]: Analyzing trace with hash -731445602, now seen corresponding path program 5 times [2021-01-06 10:25:01,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:25:01,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911916848] [2021-01-06 10:25:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:25:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:25:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:25:01,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911916848] [2021-01-06 10:25:01,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615268608] [2021-01-06 10:25:01,938 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 [2021-01-06 10:25:02,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-01-06 10:25:02,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:25:02,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 10:25:02,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:25:02,182 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:25:02,184 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,192 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:02,196 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,196 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 10:25:02,304 INFO L348 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-01-06 10:25:02,304 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-01-06 10:25:02,305 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,315 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:02,316 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,316 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2021-01-06 10:25:02,404 INFO L348 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-01-06 10:25:02,404 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-01-06 10:25:02,406 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,420 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:02,421 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,422 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40 [2021-01-06 10:25:02,553 INFO L348 Elim1Store]: treesize reduction 130, result has 33.7 percent of original size [2021-01-06 10:25:02,553 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 87 [2021-01-06 10:25:02,557 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,601 INFO L625 ElimStorePlain]: treesize reduction 22, result has 70.3 percent of original size [2021-01-06 10:25:02,603 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2021-01-06 10:25:02,846 INFO L348 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-01-06 10:25:02,847 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-01-06 10:25:02,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:02,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:02,869 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:25:02,869 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:66 [2021-01-06 10:25:03,052 INFO L348 Elim1Store]: treesize reduction 364, result has 13.7 percent of original size [2021-01-06 10:25:03,052 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 79 [2021-01-06 10:25:03,064 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:03,085 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:03,088 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:25:03,088 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:79, output treesize:75 [2021-01-06 10:25:03,382 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 54 [2021-01-06 10:25:03,383 INFO L348 Elim1Store]: treesize reduction 404, result has 28.1 percent of original size [2021-01-06 10:25:03,384 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 80 treesize of output 182 [2021-01-06 10:25:03,387 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:03,453 INFO L625 ElimStorePlain]: treesize reduction 51, result has 63.0 percent of original size [2021-01-06 10:25:03,456 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 10:25:03,457 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:91, output treesize:87 [2021-01-06 10:25:08,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:25:08,275 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:25:08,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:25:08,285 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:25:08,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-06 10:25:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 62 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-01-06 10:25:08,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:25:08,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-01-06 10:25:08,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708379153] [2021-01-06 10:25:08,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-06 10:25:08,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:25:08,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-06 10:25:08,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=910, Unknown=2, NotChecked=0, Total=992 [2021-01-06 10:25:08,412 INFO L87 Difference]: Start difference. First operand 191 states and 208 transitions. Second operand 32 states. [2021-01-06 10:25:19,292 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-06 10:25:20,666 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-01-06 10:25:22,902 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 63 [2021-01-06 10:25:26,356 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 63 [2021-01-06 10:25:29,546 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 59 [2021-01-06 10:25:34,772 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 54 [2021-01-06 10:25:42,668 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-01-06 10:25:43,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:25:43,058 INFO L93 Difference]: Finished difference Result 404 states and 435 transitions. [2021-01-06 10:25:43,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-01-06 10:25:43,059 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2021-01-06 10:25:43,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:25:43,061 INFO L225 Difference]: With dead ends: 404 [2021-01-06 10:25:43,061 INFO L226 Difference]: Without dead ends: 376 [2021-01-06 10:25:43,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3604 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=1230, Invalid=11191, Unknown=11, NotChecked=0, Total=12432 [2021-01-06 10:25:43,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-01-06 10:25:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 244. [2021-01-06 10:25:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2021-01-06 10:25:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 265 transitions. [2021-01-06 10:25:43,111 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 265 transitions. Word has length 64 [2021-01-06 10:25:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:25:43,111 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 265 transitions. [2021-01-06 10:25:43,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-06 10:25:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 265 transitions. [2021-01-06 10:25:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 10:25:43,112 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:25:43,113 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:25:43,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-06 10:25:43,320 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:25:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:25:43,321 INFO L82 PathProgramCache]: Analyzing trace with hash -791084260, now seen corresponding path program 3 times [2021-01-06 10:25:43,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:25:43,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287086264] [2021-01-06 10:25:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:25:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:25:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:25:43,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287086264] [2021-01-06 10:25:43,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167067632] [2021-01-06 10:25:43,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:25:43,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-06 10:25:43,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:25:43,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 10:25:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:25:43,922 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:25:43,923 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:43,933 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:43,934 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:43,934 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2021-01-06 10:25:43,953 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-01-06 10:25:43,970 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:25:43,970 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-01-06 10:25:43,972 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:43,978 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:43,979 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:44,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:44,001 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:44,002 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:43, output treesize:31 [2021-01-06 10:25:44,093 INFO L348 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-01-06 10:25:44,094 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-01-06 10:25:44,096 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:44,112 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:44,114 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:25:44,114 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:43 [2021-01-06 10:25:44,833 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:25:44,836 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:25:44,839 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:25:44,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:25:44,843 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:25:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 12 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:25:44,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:25:44,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2021-01-06 10:25:44,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653606799] [2021-01-06 10:25:44,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-06 10:25:44,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:25:44,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-06 10:25:44,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2021-01-06 10:25:44,902 INFO L87 Difference]: Start difference. First operand 244 states and 265 transitions. Second operand 27 states. [2021-01-06 10:25:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:25:48,890 INFO L93 Difference]: Finished difference Result 416 states and 454 transitions. [2021-01-06 10:25:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-01-06 10:25:48,890 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2021-01-06 10:25:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:25:48,892 INFO L225 Difference]: With dead ends: 416 [2021-01-06 10:25:48,892 INFO L226 Difference]: Without dead ends: 406 [2021-01-06 10:25:48,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=584, Invalid=5268, Unknown=0, NotChecked=0, Total=5852 [2021-01-06 10:25:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-01-06 10:25:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 203. [2021-01-06 10:25:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2021-01-06 10:25:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 221 transitions. [2021-01-06 10:25:48,928 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 221 transitions. Word has length 64 [2021-01-06 10:25:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:25:48,929 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 221 transitions. [2021-01-06 10:25:48,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-06 10:25:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 221 transitions. [2021-01-06 10:25:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 10:25:48,930 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:25:48,930 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:25:49,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:25:49,144 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:25:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:25:49,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1655084638, now seen corresponding path program 2 times [2021-01-06 10:25:49,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:25:49,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744763196] [2021-01-06 10:25:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:25:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:25:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:25:49,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744763196] [2021-01-06 10:25:49,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983661854] [2021-01-06 10:25:49,480 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:25:49,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:25:49,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:25:49,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 10:25:49,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:25:49,593 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:25:49,595 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:49,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:49,606 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:49,606 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 10:25:49,623 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-01-06 10:25:49,642 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:25:49,642 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-01-06 10:25:49,644 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:49,652 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:49,653 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:49,666 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:49,667 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:49,667 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:43, output treesize:31 [2021-01-06 10:25:49,744 INFO L348 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-01-06 10:25:49,744 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-01-06 10:25:49,746 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:49,760 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:49,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:25:49,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:43 [2021-01-06 10:25:50,588 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:25:50,590 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-06 10:25:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:25:50,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:25:50,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 28 [2021-01-06 10:25:50,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036012820] [2021-01-06 10:25:50,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 10:25:50,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:25:50,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 10:25:50,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2021-01-06 10:25:50,666 INFO L87 Difference]: Start difference. First operand 203 states and 221 transitions. Second operand 28 states. [2021-01-06 10:25:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:25:58,246 INFO L93 Difference]: Finished difference Result 533 states and 596 transitions. [2021-01-06 10:25:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-01-06 10:25:58,247 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 64 [2021-01-06 10:25:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:25:58,252 INFO L225 Difference]: With dead ends: 533 [2021-01-06 10:25:58,252 INFO L226 Difference]: Without dead ends: 531 [2021-01-06 10:25:58,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8182 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1950, Invalid=19220, Unknown=0, NotChecked=0, Total=21170 [2021-01-06 10:25:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-01-06 10:25:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 221. [2021-01-06 10:25:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-01-06 10:25:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 242 transitions. [2021-01-06 10:25:58,301 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 242 transitions. Word has length 64 [2021-01-06 10:25:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:25:58,301 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 242 transitions. [2021-01-06 10:25:58,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 10:25:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 242 transitions. [2021-01-06 10:25:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 10:25:58,302 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:25:58,302 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:25:58,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-01-06 10:25:58,513 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:25:58,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:25:58,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1655989871, now seen corresponding path program 9 times [2021-01-06 10:25:58,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:25:58,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612249460] [2021-01-06 10:25:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:25:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:25:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 14 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:25:59,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612249460] [2021-01-06 10:25:59,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015964545] [2021-01-06 10:25:59,058 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:25:59,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-01-06 10:25:59,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:25:59,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 10:25:59,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:25:59,538 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:25:59,539 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:59,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:59,551 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:59,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2021-01-06 10:25:59,611 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-01-06 10:25:59,612 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-01-06 10:25:59,613 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:25:59,622 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:25:59,623 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:25:59,623 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2021-01-06 10:26:00,215 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:26:00,217 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:26:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 14 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:00,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:26:00,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 32 [2021-01-06 10:26:00,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945424729] [2021-01-06 10:26:00,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-01-06 10:26:00,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:26:00,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-01-06 10:26:00,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2021-01-06 10:26:00,331 INFO L87 Difference]: Start difference. First operand 221 states and 242 transitions. Second operand 32 states. [2021-01-06 10:26:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:26:04,850 INFO L93 Difference]: Finished difference Result 376 states and 406 transitions. [2021-01-06 10:26:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-01-06 10:26:04,851 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 70 [2021-01-06 10:26:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:26:04,853 INFO L225 Difference]: With dead ends: 376 [2021-01-06 10:26:04,853 INFO L226 Difference]: Without dead ends: 366 [2021-01-06 10:26:04,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=561, Invalid=4695, Unknown=0, NotChecked=0, Total=5256 [2021-01-06 10:26:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-01-06 10:26:04,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 227. [2021-01-06 10:26:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2021-01-06 10:26:04,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2021-01-06 10:26:04,894 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 70 [2021-01-06 10:26:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:26:04,895 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2021-01-06 10:26:04,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-01-06 10:26:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2021-01-06 10:26:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 10:26:04,896 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:26:04,896 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:26:05,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-06 10:26:05,110 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:26:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:26:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -614330129, now seen corresponding path program 6 times [2021-01-06 10:26:05,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:26:05,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812631209] [2021-01-06 10:26:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:26:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:26:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 14 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:05,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812631209] [2021-01-06 10:26:05,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629153025] [2021-01-06 10:26:05,500 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:26:05,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-06 10:26:05,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:26:05,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 10:26:05,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:26:05,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:26:05,774 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:26:05,784 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:26:05,785 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:26:05,786 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2021-01-06 10:26:05,808 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-01-06 10:26:05,826 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:26:05,826 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2021-01-06 10:26:05,828 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:26:05,836 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:26:05,837 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:26:05,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:26:05,851 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:26:05,851 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:31 [2021-01-06 10:26:06,608 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:26:06,609 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:26:06,611 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:26:06,613 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:26:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 14 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:06,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:26:06,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 28 [2021-01-06 10:26:06,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356908317] [2021-01-06 10:26:06,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 10:26:06,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:26:06,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 10:26:06,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2021-01-06 10:26:06,651 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand 28 states. [2021-01-06 10:26:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:26:12,267 INFO L93 Difference]: Finished difference Result 493 states and 532 transitions. [2021-01-06 10:26:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-01-06 10:26:12,270 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 70 [2021-01-06 10:26:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:26:12,272 INFO L225 Difference]: With dead ends: 493 [2021-01-06 10:26:12,272 INFO L226 Difference]: Without dead ends: 483 [2021-01-06 10:26:12,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3575 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=936, Invalid=9776, Unknown=0, NotChecked=0, Total=10712 [2021-01-06 10:26:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-01-06 10:26:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 233. [2021-01-06 10:26:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-01-06 10:26:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 255 transitions. [2021-01-06 10:26:12,319 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 255 transitions. Word has length 70 [2021-01-06 10:26:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:26:12,320 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 255 transitions. [2021-01-06 10:26:12,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 10:26:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 255 transitions. [2021-01-06 10:26:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-06 10:26:12,321 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:26:12,321 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:26:12,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:26:12,534 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:26:12,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:26:12,535 INFO L82 PathProgramCache]: Analyzing trace with hash 813215407, now seen corresponding path program 4 times [2021-01-06 10:26:12,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:26:12,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811804582] [2021-01-06 10:26:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:26:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:26:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:12,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811804582] [2021-01-06 10:26:12,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741506866] [2021-01-06 10:26:12,889 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:26:12,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:26:12,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:26:12,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 10:26:12,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:26:13,048 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:26:13,049 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:26:13,059 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:26:13,060 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:26:13,060 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 10:26:13,081 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2021-01-06 10:26:13,106 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:26:13,106 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 57 [2021-01-06 10:26:13,108 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-06 10:26:13,117 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:26:13,118 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:26:13,129 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:26:13,131 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:26:13,132 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:31 [2021-01-06 10:26:13,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:26:13,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:26:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:13,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:26:13,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 28 [2021-01-06 10:26:13,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227929988] [2021-01-06 10:26:14,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-06 10:26:14,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:26:14,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-06 10:26:14,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2021-01-06 10:26:14,001 INFO L87 Difference]: Start difference. First operand 233 states and 255 transitions. Second operand 28 states. [2021-01-06 10:26:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:26:29,782 INFO L93 Difference]: Finished difference Result 798 states and 892 transitions. [2021-01-06 10:26:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2021-01-06 10:26:29,783 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 70 [2021-01-06 10:26:29,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:26:29,786 INFO L225 Difference]: With dead ends: 798 [2021-01-06 10:26:29,787 INFO L226 Difference]: Without dead ends: 796 [2021-01-06 10:26:29,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26428 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=5004, Invalid=57246, Unknown=0, NotChecked=0, Total=62250 [2021-01-06 10:26:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-01-06 10:26:29,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 239. [2021-01-06 10:26:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2021-01-06 10:26:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 261 transitions. [2021-01-06 10:26:29,836 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 261 transitions. Word has length 70 [2021-01-06 10:26:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:26:29,836 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 261 transitions. [2021-01-06 10:26:29,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-06 10:26:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 261 transitions. [2021-01-06 10:26:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 10:26:29,837 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:26:29,837 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:26:30,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-06 10:26:30,038 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:26:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:26:30,039 INFO L82 PathProgramCache]: Analyzing trace with hash -509409342, now seen corresponding path program 10 times [2021-01-06 10:26:30,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:26:30,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057947203] [2021-01-06 10:26:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:26:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:26:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 16 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:30,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057947203] [2021-01-06 10:26:30,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340514874] [2021-01-06 10:26:30,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:26:30,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 10:26:30,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:26:30,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 10:26:30,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:26:30,771 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-06 10:26:30,773 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:26:30,780 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:26:30,781 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:26:30,781 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2021-01-06 10:26:31,295 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:26:31,298 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:26:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 16 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:31,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:26:31,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 29 [2021-01-06 10:26:31,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025618723] [2021-01-06 10:26:31,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-06 10:26:31,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:26:31,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-06 10:26:31,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2021-01-06 10:26:31,402 INFO L87 Difference]: Start difference. First operand 239 states and 261 transitions. Second operand 29 states. [2021-01-06 10:26:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:26:35,492 INFO L93 Difference]: Finished difference Result 410 states and 441 transitions. [2021-01-06 10:26:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-01-06 10:26:35,493 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 76 [2021-01-06 10:26:35,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:26:35,496 INFO L225 Difference]: With dead ends: 410 [2021-01-06 10:26:35,496 INFO L226 Difference]: Without dead ends: 400 [2021-01-06 10:26:35,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=506, Invalid=4606, Unknown=0, NotChecked=0, Total=5112 [2021-01-06 10:26:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-01-06 10:26:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 245. [2021-01-06 10:26:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-01-06 10:26:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 267 transitions. [2021-01-06 10:26:35,564 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 267 transitions. Word has length 76 [2021-01-06 10:26:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:26:35,564 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 267 transitions. [2021-01-06 10:26:35,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-06 10:26:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 267 transitions. [2021-01-06 10:26:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 10:26:35,565 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:26:35,565 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:26:35,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:26:35,766 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:26:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:26:35,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1157180862, now seen corresponding path program 7 times [2021-01-06 10:26:35,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:26:35,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003657304] [2021-01-06 10:26:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:26:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:26:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:36,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003657304] [2021-01-06 10:26:36,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524030504] [2021-01-06 10:26:36,172 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:26:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:26:36,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 10:26:36,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:26:36,310 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:26:36,311 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:26:36,322 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:26:36,323 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:26:36,323 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2021-01-06 10:26:36,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:26:36,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:26:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:36,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:26:36,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26 [2021-01-06 10:26:36,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95444455] [2021-01-06 10:26:36,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-06 10:26:36,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:26:36,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-06 10:26:36,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-01-06 10:26:36,921 INFO L87 Difference]: Start difference. First operand 245 states and 267 transitions. Second operand 26 states. [2021-01-06 10:26:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:26:56,644 INFO L93 Difference]: Finished difference Result 1069 states and 1192 transitions. [2021-01-06 10:26:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2021-01-06 10:26:56,646 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 76 [2021-01-06 10:26:56,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:26:56,650 INFO L225 Difference]: With dead ends: 1069 [2021-01-06 10:26:56,650 INFO L226 Difference]: Without dead ends: 1067 [2021-01-06 10:26:56,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40563 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=5208, Invalid=86298, Unknown=0, NotChecked=0, Total=91506 [2021-01-06 10:26:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-01-06 10:26:56,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 257. [2021-01-06 10:26:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-01-06 10:26:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 279 transitions. [2021-01-06 10:26:56,708 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 279 transitions. Word has length 76 [2021-01-06 10:26:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:26:56,709 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 279 transitions. [2021-01-06 10:26:56,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-06 10:26:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 279 transitions. [2021-01-06 10:26:56,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-06 10:26:56,710 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:26:56,710 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:26:56,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-06 10:26:56,927 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:26:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:26:56,927 INFO L82 PathProgramCache]: Analyzing trace with hash -403038507, now seen corresponding path program 11 times [2021-01-06 10:26:56,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:26:56,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752661577] [2021-01-06 10:26:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:26:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:26:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 203 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:58,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752661577] [2021-01-06 10:26:58,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106368299] [2021-01-06 10:26:58,315 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:26:58,456 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-01-06 10:26:58,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:26:58,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 10:26:58,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:26:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 252 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:26:59,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:26:59,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2021-01-06 10:26:59,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928539562] [2021-01-06 10:26:59,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-06 10:26:59,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:26:59,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-06 10:26:59,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=889, Unknown=0, NotChecked=0, Total=1190 [2021-01-06 10:26:59,778 INFO L87 Difference]: Start difference. First operand 257 states and 279 transitions. Second operand 35 states. [2021-01-06 10:27:00,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:27:00,839 INFO L93 Difference]: Finished difference Result 494 states and 535 transitions. [2021-01-06 10:27:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-06 10:27:00,839 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 82 [2021-01-06 10:27:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:27:00,841 INFO L225 Difference]: With dead ends: 494 [2021-01-06 10:27:00,841 INFO L226 Difference]: Without dead ends: 293 [2021-01-06 10:27:00,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2021-01-06 10:27:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-01-06 10:27:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 277. [2021-01-06 10:27:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2021-01-06 10:27:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 299 transitions. [2021-01-06 10:27:00,899 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 299 transitions. Word has length 82 [2021-01-06 10:27:00,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:27:00,899 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 299 transitions. [2021-01-06 10:27:00,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-06 10:27:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 299 transitions. [2021-01-06 10:27:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-06 10:27:00,900 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:27:00,900 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:27:01,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-06 10:27:01,113 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:27:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:27:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash -834672092, now seen corresponding path program 12 times [2021-01-06 10:27:01,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:27:01,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468557301] [2021-01-06 10:27:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:27:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:27:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 18 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:27:01,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468557301] [2021-01-06 10:27:01,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971736914] [2021-01-06 10:27:01,923 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:27:02,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-06 10:27:02,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:27:02,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-06 10:27:02,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:27:02,606 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:27:02,607 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:02,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:02,622 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:02,622 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2021-01-06 10:27:02,704 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:27:02,704 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-01-06 10:27:02,706 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:02,719 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:02,721 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:02,722 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2021-01-06 10:27:02,745 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-01-06 10:27:02,746 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-01-06 10:27:02,748 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:02,758 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:02,759 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:02,759 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2021-01-06 10:27:03,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:03,832 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 18 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:27:03,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:27:03,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38 [2021-01-06 10:27:03,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787231727] [2021-01-06 10:27:03,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-06 10:27:03,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:27:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-06 10:27:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 10:27:03,985 INFO L87 Difference]: Start difference. First operand 277 states and 299 transitions. Second operand 38 states. [2021-01-06 10:27:12,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:27:12,970 INFO L93 Difference]: Finished difference Result 442 states and 473 transitions. [2021-01-06 10:27:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-01-06 10:27:12,972 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 87 [2021-01-06 10:27:12,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:27:12,974 INFO L225 Difference]: With dead ends: 442 [2021-01-06 10:27:12,974 INFO L226 Difference]: Without dead ends: 432 [2021-01-06 10:27:12,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=690, Invalid=7142, Unknown=0, NotChecked=0, Total=7832 [2021-01-06 10:27:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-01-06 10:27:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 283. [2021-01-06 10:27:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2021-01-06 10:27:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 305 transitions. [2021-01-06 10:27:13,024 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 305 transitions. Word has length 87 [2021-01-06 10:27:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:27:13,024 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 305 transitions. [2021-01-06 10:27:13,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-06 10:27:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 305 transitions. [2021-01-06 10:27:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-06 10:27:13,025 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:27:13,025 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:27:13,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-06 10:27:13,226 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:27:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:27:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash 558135266, now seen corresponding path program 8 times [2021-01-06 10:27:13,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:27:13,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315888923] [2021-01-06 10:27:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:27:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:27:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 18 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:27:14,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315888923] [2021-01-06 10:27:14,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584620842] [2021-01-06 10:27:14,073 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:27:14,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 10:27:14,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:27:14,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 10:27:14,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:27:14,492 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:27:14,493 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:14,504 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:14,506 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:14,507 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2021-01-06 10:27:14,605 INFO L348 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-01-06 10:27:14,606 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-01-06 10:27:14,608 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:14,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:14,624 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:14,624 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:16 [2021-01-06 10:27:14,647 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-01-06 10:27:14,648 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-01-06 10:27:14,650 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:14,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:14,659 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:14,659 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2021-01-06 10:27:15,736 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:15,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 18 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:27:15,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:27:15,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 38 [2021-01-06 10:27:15,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923462448] [2021-01-06 10:27:15,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-06 10:27:15,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:27:15,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-06 10:27:15,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1309, Unknown=0, NotChecked=0, Total=1406 [2021-01-06 10:27:15,808 INFO L87 Difference]: Start difference. First operand 283 states and 305 transitions. Second operand 38 states. [2021-01-06 10:27:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 10:27:30,893 INFO L93 Difference]: Finished difference Result 646 states and 691 transitions. [2021-01-06 10:27:30,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-01-06 10:27:30,893 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 87 [2021-01-06 10:27:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 10:27:30,896 INFO L225 Difference]: With dead ends: 646 [2021-01-06 10:27:30,896 INFO L226 Difference]: Without dead ends: 636 [2021-01-06 10:27:30,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5215 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1187, Invalid=16369, Unknown=0, NotChecked=0, Total=17556 [2021-01-06 10:27:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-01-06 10:27:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 295. [2021-01-06 10:27:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2021-01-06 10:27:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 319 transitions. [2021-01-06 10:27:30,973 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 319 transitions. Word has length 87 [2021-01-06 10:27:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 10:27:30,973 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 319 transitions. [2021-01-06 10:27:30,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-06 10:27:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 319 transitions. [2021-01-06 10:27:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-01-06 10:27:30,975 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 10:27:30,975 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 10:27:31,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-06 10:27:31,188 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 10:27:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 10:27:31,189 INFO L82 PathProgramCache]: Analyzing trace with hash 24186020, now seen corresponding path program 3 times [2021-01-06 10:27:31,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 10:27:31,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765979304] [2021-01-06 10:27:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 10:27:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 10:27:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 10:27:31,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765979304] [2021-01-06 10:27:31,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496360920] [2021-01-06 10:27:31,917 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 10:27:32,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 10:27:32,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 10:27:32,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 10:27:32,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 10:27:32,409 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-06 10:27:32,412 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:32,436 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:32,438 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:32,439 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2021-01-06 10:27:32,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:32,556 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 29 treesize of output 28 [2021-01-06 10:27:32,558 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:32,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:32,586 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:32,587 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2021-01-06 10:27:32,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:32,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:32,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:32,713 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:32,714 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2021-01-06 10:27:32,716 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:32,749 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:32,750 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:32,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2021-01-06 10:27:32,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,014 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:33,015 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 47 [2021-01-06 10:27:33,018 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:33,054 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:33,055 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:33,056 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2021-01-06 10:27:33,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,216 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:33,216 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2021-01-06 10:27:33,219 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:33,259 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:33,261 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:33,261 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:64 [2021-01-06 10:27:33,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,444 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:33,444 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 77 [2021-01-06 10:27:33,447 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:33,494 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:33,496 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-06 10:27:33,496 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:80, output treesize:76 [2021-01-06 10:27:33,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:33,883 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:33,884 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 92 [2021-01-06 10:27:33,887 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:33,943 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:33,945 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:27:33,945 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:97, output treesize:93 [2021-01-06 10:27:34,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,209 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:34,210 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 90 treesize of output 107 [2021-01-06 10:27:34,213 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:34,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:34,280 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:27:34,280 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:109, output treesize:105 [2021-01-06 10:27:34,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:34,580 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:34,581 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 122 [2021-01-06 10:27:34,585 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:34,653 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:34,655 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-06 10:27:34,656 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:121, output treesize:117 [2021-01-06 10:27:37,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,247 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:37,248 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 114 treesize of output 137 [2021-01-06 10:27:37,251 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:37,333 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:37,338 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 10:27:37,338 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:138, output treesize:134 [2021-01-06 10:27:37,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:37,765 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:37,765 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 126 treesize of output 152 [2021-01-06 10:27:37,769 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:37,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:37,862 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 10:27:37,862 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:150, output treesize:146 [2021-01-06 10:27:38,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-06 10:27:38,283 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:38,284 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 138 treesize of output 167 [2021-01-06 10:27:38,287 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-06 10:27:38,393 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-01-06 10:27:38,394 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-06 10:27:38,398 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-06 10:27:38,399 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:162, output treesize:158 [2021-01-06 10:27:44,915 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 73 [2021-01-06 10:27:44,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:44,931 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:27:44,933 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:44,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 10:27:44,936 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 10:27:44,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 10:27:44,943 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:44,959 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:27:44,965 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-06 10:27:44,972 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-06 10:27:44,977 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 14 disjuncts [2021-01-06 10:27:45,197 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-01-06 10:27:45,395 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-01-06 10:27:51,644 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 66 [2021-01-06 10:27:53,906 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 68 [2021-01-06 10:27:53,929 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:53,934 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 10:27:53,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2021-01-06 10:27:53,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 13 disjuncts [2021-01-06 10:27:53,959 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 16 disjuncts [2021-01-06 10:27:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-01-06 10:27:54,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 10:27:54,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 42 [2021-01-06 10:27:54,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892369462] [2021-01-06 10:27:54,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-01-06 10:27:54,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 10:27:54,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-01-06 10:27:54,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1567, Unknown=4, NotChecked=0, Total=1722 [2021-01-06 10:27:54,280 INFO L87 Difference]: Start difference. First operand 295 states and 319 transitions. Second operand 42 states. [2021-01-06 10:27:56,800 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2021-01-06 10:27:57,503 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-01-06 10:27:58,139 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-01-06 10:27:58,861 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-01-06 10:27:59,443 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-01-06 10:28:00,169 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2021-01-06 10:28:00,816 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61