/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-patterns/array19_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:01:21,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:01:21,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:01:21,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:01:21,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:01:21,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:01:21,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:01:21,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:01:21,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:01:21,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:01:21,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:01:21,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:01:21,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:01:21,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:01:21,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:01:21,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:01:21,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:01:21,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:01:22,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:01:22,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:01:22,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:01:22,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:01:22,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:01:22,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:01:22,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:01:22,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:01:22,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:01:22,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:01:22,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:01:22,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:01:22,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:01:22,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:01:22,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:01:22,126 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:01:22,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:01:22,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:01:22,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:01:22,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:01:22,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:01:22,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:01:22,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:01:22,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:01:22,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:01:22,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:01:22,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:01:22,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:01:22,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:01:22,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:01:22,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:01:22,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:01:22,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:01:22,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:01:22,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:01:22,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:01:22,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:01:22,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:01:22,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:01:22,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:01:22,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:01:22,607 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:01:22,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array19_pattern.c [2020-12-23 01:01:22,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e9125a9d5/3796d04330204a658a7bcf2a91be895b/FLAG122e36f27 [2020-12-23 01:01:23,415 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:01:23,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-patterns/array19_pattern.c [2020-12-23 01:01:23,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e9125a9d5/3796d04330204a658a7bcf2a91be895b/FLAG122e36f27 [2020-12-23 01:01:23,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e9125a9d5/3796d04330204a658a7bcf2a91be895b [2020-12-23 01:01:23,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:01:23,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:01:23,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:01:23,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:01:23,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:01:23,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:01:23" (1/1) ... [2020-12-23 01:01:23,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc6a0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:23, skipping insertion in model container [2020-12-23 01:01:23,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:01:23" (1/1) ... [2020-12-23 01:01:23,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:01:23,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 01:01:24,078 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-patterns/array19_pattern.c[1442,1455] left hand side expression in assignment: lhs: VariableLHS[~ARR_SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~row~0,]]],[IdentifierExpression[~column~0,]]] left hand side expression in assignment: lhs: VariableLHS[~index1~0,] left hand side expression in assignment: lhs: VariableLHS[~index2~0,] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~index1~0,]]],[IdentifierExpression[~index2~0,]]] left hand side expression in assignment: lhs: ArrayLHS[ArrayLHS[VariableLHS[~array~0,],[IdentifierExpression[~index1~0,]]],[BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IdentifierExpression[~ARR_SIZE~0,GLOBAL],IntegerLiteral[1]],IdentifierExpression[~index2~0,]]]] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2020-12-23 01:01:24,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:01:24,156 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 01:01:24,172 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-patterns/array19_pattern.c[1442,1455] left hand side expression in assignment: lhs: VariableLHS[~ARR_SIZE~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~row~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~column~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~index1~0,] left hand side expression in assignment: lhs: VariableLHS[~index2~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~index1~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~index2~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,],base],BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,],offset],BinaryExpression[ARITHMUL,IdentifierExpression[~index1~0,],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~ARR_SIZE~0,GLOBAL]]]],BinaryExpression[ARITHMUL,IntegerLiteral[4],BinaryExpression[ARITHMINUS,BinaryExpression[ARITHMINUS,IdentifierExpression[~ARR_SIZE~0,GLOBAL],IntegerLiteral[1]],IdentifierExpression[~index2~0,]]]]]] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~row~0,] left hand side expression in assignment: lhs: VariableLHS[~column~0,] left hand side expression in assignment: lhs: VariableLHS[~sum~0,] [2020-12-23 01:01:24,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:01:24,234 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:01:24,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24 WrapperNode [2020-12-23 01:01:24,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:01:24,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:01:24,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:01:24,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:01:24,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:01:24,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:01:24,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:01:24,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:01:24,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... [2020-12-23 01:01:24,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:01:24,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:01:24,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:01:24,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:01:24,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:01:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:01:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:01:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 01:01:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:01:24,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:01:24,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 01:01:24,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 01:01:24,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:01:24,949 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 01:01:24,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:01:24 BoogieIcfgContainer [2020-12-23 01:01:24,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:01:24,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:01:24,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:01:24,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:01:24,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:01:23" (1/3) ... [2020-12-23 01:01:24,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279a681d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:01:24, skipping insertion in model container [2020-12-23 01:01:24,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:01:24" (2/3) ... [2020-12-23 01:01:24,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279a681d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:01:24, skipping insertion in model container [2020-12-23 01:01:24,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:01:24" (3/3) ... [2020-12-23 01:01:24,963 INFO L111 eAbstractionObserver]: Analyzing ICFG array19_pattern.c [2020-12-23 01:01:24,973 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:01:24,980 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:01:25,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:01:25,083 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:01:25,083 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:01:25,083 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:01:25,083 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:01:25,083 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:01:25,084 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:01:25,084 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:01:25,089 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:01:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-12-23 01:01:25,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 01:01:25,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:25,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:25,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1763201290, now seen corresponding path program 1 times [2020-12-23 01:01:25,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:25,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45380234] [2020-12-23 01:01:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:01:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:01:25,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45380234] [2020-12-23 01:01:25,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:01:25,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 01:01:25,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910300114] [2020-12-23 01:01:25,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 01:01:25,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:25,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 01:01:25,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:01:25,366 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-12-23 01:01:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:25,390 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2020-12-23 01:01:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 01:01:25,392 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 01:01:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:25,403 INFO L225 Difference]: With dead ends: 57 [2020-12-23 01:01:25,404 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 01:01:25,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 01:01:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 01:01:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-23 01:01:25,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 01:01:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-12-23 01:01:25,450 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 11 [2020-12-23 01:01:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:25,451 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-12-23 01:01:25,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 01:01:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-12-23 01:01:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 01:01:25,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:25,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:25,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:01:25,453 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:25,455 INFO L82 PathProgramCache]: Analyzing trace with hash -204009896, now seen corresponding path program 1 times [2020-12-23 01:01:25,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:25,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092047607] [2020-12-23 01:01:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:25,476 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:25,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320184948] [2020-12-23 01:01:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:01:25,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 01:01:25,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:01:25,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092047607] [2020-12-23 01:01:25,743 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:25,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320184948] [2020-12-23 01:01:25,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:01:25,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 01:01:25,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580450529] [2020-12-23 01:01:25,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 01:01:25,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:25,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 01:01:25,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:01:25,753 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 5 states. [2020-12-23 01:01:25,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:25,928 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-23 01:01:25,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 01:01:25,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-23 01:01:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:25,930 INFO L225 Difference]: With dead ends: 53 [2020-12-23 01:01:25,930 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 01:01:25,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:01:25,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 01:01:25,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-12-23 01:01:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 01:01:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-12-23 01:01:25,939 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 19 [2020-12-23 01:01:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:25,940 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-12-23 01:01:25,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 01:01:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-12-23 01:01:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 01:01:25,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:25,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:26,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 01:01:26,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:26,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1717183807, now seen corresponding path program 1 times [2020-12-23 01:01:26,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:26,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445505] [2020-12-23 01:01:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:26,185 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:26,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928086623] [2020-12-23 01:01:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:01:26,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 01:01:26,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 01:01:26,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445505] [2020-12-23 01:01:26,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:26,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928086623] [2020-12-23 01:01:26,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:01:26,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 01:01:26,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573931474] [2020-12-23 01:01:26,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 01:01:26,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:26,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 01:01:26,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 01:01:26,372 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-12-23 01:01:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:26,467 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-23 01:01:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 01:01:26,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-23 01:01:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:26,470 INFO L225 Difference]: With dead ends: 55 [2020-12-23 01:01:26,470 INFO L226 Difference]: Without dead ends: 32 [2020-12-23 01:01:26,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 01:01:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-23 01:01:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-12-23 01:01:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 01:01:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-12-23 01:01:26,484 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2020-12-23 01:01:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:26,485 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-12-23 01:01:26,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 01:01:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-12-23 01:01:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 01:01:26,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:26,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:26,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:26,703 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:26,705 INFO L82 PathProgramCache]: Analyzing trace with hash 817488613, now seen corresponding path program 1 times [2020-12-23 01:01:26,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:26,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671564912] [2020-12-23 01:01:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:26,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:26,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821058091] [2020-12-23 01:01:26,721 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 [2020-12-23 01:01:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:01:26,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-23 01:01:26,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:26,919 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-23 01:01:26,920 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:26,930 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:26,932 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:01:26,932 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2020-12-23 01:01:27,268 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:27,269 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 28 treesize of output 61 [2020-12-23 01:01:27,275 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:27,315 INFO L625 ElimStorePlain]: treesize reduction 48, result has 39.2 percent of original size [2020-12-23 01:01:27,316 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:01:27,317 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:31 [2020-12-23 01:01:27,487 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:27,488 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 54 treesize of output 83 [2020-12-23 01:01:27,494 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:27,534 INFO L625 ElimStorePlain]: treesize reduction 62, result has 29.5 percent of original size [2020-12-23 01:01:27,538 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:01:27,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:72, output treesize:17 [2020-12-23 01:01:27,663 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2020-12-23 01:01:27,664 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:27,667 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:27,668 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:01:27,668 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 01:01:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:01:27,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671564912] [2020-12-23 01:01:27,718 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:27,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821058091] [2020-12-23 01:01:27,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:01:27,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-12-23 01:01:27,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766061886] [2020-12-23 01:01:27,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 01:01:27,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:27,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 01:01:27,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2020-12-23 01:01:27,722 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 21 states. [2020-12-23 01:01:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:29,816 INFO L93 Difference]: Finished difference Result 108 states and 132 transitions. [2020-12-23 01:01:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 01:01:29,816 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 29 [2020-12-23 01:01:29,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:29,825 INFO L225 Difference]: With dead ends: 108 [2020-12-23 01:01:29,825 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 01:01:29,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=294, Invalid=1686, Unknown=0, NotChecked=0, Total=1980 [2020-12-23 01:01:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 01:01:29,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 53. [2020-12-23 01:01:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 01:01:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-12-23 01:01:29,854 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 29 [2020-12-23 01:01:29,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:29,855 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-12-23 01:01:29,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 01:01:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-12-23 01:01:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 01:01:29,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:29,857 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:30,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:30,071 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:30,073 INFO L82 PathProgramCache]: Analyzing trace with hash -212199577, now seen corresponding path program 2 times [2020-12-23 01:01:30,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:30,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932352612] [2020-12-23 01:01:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:30,087 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:30,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164151375] [2020-12-23 01:01:30,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:30,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 01:01:30,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:01:30,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:01:30,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:01:30,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932352612] [2020-12-23 01:01:30,258 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:30,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164151375] [2020-12-23 01:01:30,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:01:30,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:01:30,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281259141] [2020-12-23 01:01:30,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:01:30,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:30,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:01:30,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:01:30,274 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 7 states. [2020-12-23 01:01:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:30,475 INFO L93 Difference]: Finished difference Result 161 states and 196 transitions. [2020-12-23 01:01:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 01:01:30,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-12-23 01:01:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:30,477 INFO L225 Difference]: With dead ends: 161 [2020-12-23 01:01:30,478 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 01:01:30,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:01:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 01:01:30,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 78. [2020-12-23 01:01:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 01:01:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2020-12-23 01:01:30,493 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 31 [2020-12-23 01:01:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:30,493 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2020-12-23 01:01:30,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:01:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2020-12-23 01:01:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 01:01:30,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:30,495 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:30,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:30,711 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:30,712 INFO L82 PathProgramCache]: Analyzing trace with hash -182444793, now seen corresponding path program 3 times [2020-12-23 01:01:30,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:30,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035799638] [2020-12-23 01:01:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:30,730 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:30,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764044120] [2020-12-23 01:01:30,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:30,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 01:01:30,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:01:30,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 01:01:30,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:31,121 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 29 treesize of output 25 [2020-12-23 01:01:31,122 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:31,136 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:31,139 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:01:31,140 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:46, output treesize:42 [2020-12-23 01:01:31,322 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:31,322 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2020-12-23 01:01:31,325 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 01:01:31,348 INFO L625 ElimStorePlain]: treesize reduction 18, result has 48.6 percent of original size [2020-12-23 01:01:31,352 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:01:31,352 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:46, output treesize:3 [2020-12-23 01:01:31,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 01:01:31,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035799638] [2020-12-23 01:01:31,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:31,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764044120] [2020-12-23 01:01:31,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:01:31,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 01:01:31,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893119906] [2020-12-23 01:01:31,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 01:01:31,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:31,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 01:01:31,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:01:31,405 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand 16 states. [2020-12-23 01:01:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:32,733 INFO L93 Difference]: Finished difference Result 213 states and 258 transitions. [2020-12-23 01:01:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 01:01:32,734 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2020-12-23 01:01:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:32,735 INFO L225 Difference]: With dead ends: 213 [2020-12-23 01:01:32,735 INFO L226 Difference]: Without dead ends: 173 [2020-12-23 01:01:32,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=210, Invalid=912, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 01:01:32,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-23 01:01:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 120. [2020-12-23 01:01:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-23 01:01:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 148 transitions. [2020-12-23 01:01:32,755 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 148 transitions. Word has length 31 [2020-12-23 01:01:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:32,755 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 148 transitions. [2020-12-23 01:01:32,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 01:01:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 148 transitions. [2020-12-23 01:01:32,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 01:01:32,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:32,757 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:32,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 01:01:32,973 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:32,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2049114485, now seen corresponding path program 1 times [2020-12-23 01:01:32,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:32,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457496169] [2020-12-23 01:01:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:33,001 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:33,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681049563] [2020-12-23 01:01:33,001 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 [2020-12-23 01:01:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:01:33,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:01:33,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:01:33,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457496169] [2020-12-23 01:01:33,200 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:33,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681049563] [2020-12-23 01:01:33,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:01:33,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:01:33,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501030778] [2020-12-23 01:01:33,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:01:33,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:33,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:01:33,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:01:33,204 INFO L87 Difference]: Start difference. First operand 120 states and 148 transitions. Second operand 7 states. [2020-12-23 01:01:33,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:33,372 INFO L93 Difference]: Finished difference Result 166 states and 204 transitions. [2020-12-23 01:01:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 01:01:33,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-12-23 01:01:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:33,374 INFO L225 Difference]: With dead ends: 166 [2020-12-23 01:01:33,374 INFO L226 Difference]: Without dead ends: 128 [2020-12-23 01:01:33,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 01:01:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-23 01:01:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2020-12-23 01:01:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 01:01:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 133 transitions. [2020-12-23 01:01:33,392 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 133 transitions. Word has length 31 [2020-12-23 01:01:33,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:33,392 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 133 transitions. [2020-12-23 01:01:33,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:01:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 133 transitions. [2020-12-23 01:01:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 01:01:33,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:33,394 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, 1, 1, 1, 1, 1] [2020-12-23 01:01:33,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:33,610 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:33,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1164461191, now seen corresponding path program 4 times [2020-12-23 01:01:33,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:33,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192366615] [2020-12-23 01:01:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:33,624 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:33,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358525831] [2020-12-23 01:01:33,624 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:33,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 01:01:33,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:01:33,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:01:33,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:01:33,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192366615] [2020-12-23 01:01:33,760 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:33,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358525831] [2020-12-23 01:01:33,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:01:33,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:01:33,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180072568] [2020-12-23 01:01:33,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:01:33,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:33,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:01:33,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:01:33,763 INFO L87 Difference]: Start difference. First operand 109 states and 133 transitions. Second operand 7 states. [2020-12-23 01:01:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:33,951 INFO L93 Difference]: Finished difference Result 136 states and 159 transitions. [2020-12-23 01:01:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 01:01:33,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-12-23 01:01:33,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:33,955 INFO L225 Difference]: With dead ends: 136 [2020-12-23 01:01:33,955 INFO L226 Difference]: Without dead ends: 120 [2020-12-23 01:01:33,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-23 01:01:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-23 01:01:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-12-23 01:01:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 01:01:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2020-12-23 01:01:33,984 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 34 [2020-12-23 01:01:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:33,986 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2020-12-23 01:01:33,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:01:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2020-12-23 01:01:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 01:01:33,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:33,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:34,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:34,209 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:34,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:34,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1661623630, now seen corresponding path program 5 times [2020-12-23 01:01:34,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:34,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342971425] [2020-12-23 01:01:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:34,228 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:34,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129553153] [2020-12-23 01:01:34,229 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:34,280 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 01:01:34,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:01:34,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:01:34,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 01:01:34,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342971425] [2020-12-23 01:01:34,356 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:34,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129553153] [2020-12-23 01:01:34,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:01:34,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:01:34,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65817889] [2020-12-23 01:01:34,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:01:34,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:34,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:01:34,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:01:34,359 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand 7 states. [2020-12-23 01:01:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:34,518 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2020-12-23 01:01:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 01:01:34,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-12-23 01:01:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:34,520 INFO L225 Difference]: With dead ends: 135 [2020-12-23 01:01:34,520 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 01:01:34,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 01:01:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 01:01:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 98. [2020-12-23 01:01:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 01:01:34,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2020-12-23 01:01:34,530 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 36 [2020-12-23 01:01:34,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:34,530 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2020-12-23 01:01:34,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:01:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2020-12-23 01:01:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 01:01:34,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:34,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:34,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 01:01:34,747 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:34,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash -2106982269, now seen corresponding path program 1 times [2020-12-23 01:01:34,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:34,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577558622] [2020-12-23 01:01:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:34,774 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:34,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535560325] [2020-12-23 01:01:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:01:34,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 01:01:34,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 01:01:35,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577558622] [2020-12-23 01:01:35,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:35,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535560325] [2020-12-23 01:01:35,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:01:35,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 01:01:35,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885312169] [2020-12-23 01:01:35,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 01:01:35,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:35,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 01:01:35,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:01:35,073 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand 9 states. [2020-12-23 01:01:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:35,497 INFO L93 Difference]: Finished difference Result 135 states and 154 transitions. [2020-12-23 01:01:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 01:01:35,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-12-23 01:01:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:35,498 INFO L225 Difference]: With dead ends: 135 [2020-12-23 01:01:35,498 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 01:01:35,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-12-23 01:01:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 01:01:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2020-12-23 01:01:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-23 01:01:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2020-12-23 01:01:35,507 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 38 [2020-12-23 01:01:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:35,507 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2020-12-23 01:01:35,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 01:01:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2020-12-23 01:01:35,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-23 01:01:35,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:35,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:35,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:35,724 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:35,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1024786640, now seen corresponding path program 1 times [2020-12-23 01:01:35,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:35,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566698054] [2020-12-23 01:01:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:35,737 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:35,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930834618] [2020-12-23 01:01:35,737 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 [2020-12-23 01:01:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:01:35,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 01:01:35,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 01:01:35,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566698054] [2020-12-23 01:01:35,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 01:01:35,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930834618] [2020-12-23 01:01:35,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 01:01:35,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 01:01:35,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531964818] [2020-12-23 01:01:35,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 01:01:35,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:01:35,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 01:01:35,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 01:01:35,901 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 7 states. [2020-12-23 01:01:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:01:36,032 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-12-23 01:01:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 01:01:36,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-12-23 01:01:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:01:36,034 INFO L225 Difference]: With dead ends: 88 [2020-12-23 01:01:36,034 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 01:01:36,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-23 01:01:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 01:01:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-12-23 01:01:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 01:01:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-23 01:01:36,045 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 43 [2020-12-23 01:01:36,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:01:36,045 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-23 01:01:36,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 01:01:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-23 01:01:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 01:01:36,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:01:36,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:01:36,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:36,261 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:01:36,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:01:36,262 INFO L82 PathProgramCache]: Analyzing trace with hash -451868680, now seen corresponding path program 6 times [2020-12-23 01:01:36,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:01:36,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571296227] [2020-12-23 01:01:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:01:36,279 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 01:01:36,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529264963] [2020-12-23 01:01:36,279 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 01:01:36,649 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-23 01:01:36,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 01:01:36,652 WARN L261 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 82 conjunts are in the unsatisfiable core [2020-12-23 01:01:36,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 01:01:36,688 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 [2020-12-23 01:01:36,689 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:36,697 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:36,698 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:01:36,698 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:15 [2020-12-23 01:01:36,737 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 17 treesize of output 13 [2020-12-23 01:01:36,738 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:36,750 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:36,751 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:01:36,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2020-12-23 01:01:36,797 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:36,798 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 34 treesize of output 85 [2020-12-23 01:01:36,801 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:36,841 INFO L625 ElimStorePlain]: treesize reduction 26, result has 64.4 percent of original size [2020-12-23 01:01:36,842 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 01:01:36,843 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2020-12-23 01:01:37,125 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:37,125 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 54 treesize of output 208 [2020-12-23 01:01:37,135 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:37,209 INFO L625 ElimStorePlain]: treesize reduction 79, result has 48.7 percent of original size [2020-12-23 01:01:37,211 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:01:37,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:79, output treesize:75 [2020-12-23 01:01:37,421 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:01:37,422 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 67 treesize of output 323 [2020-12-23 01:01:37,430 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:37,576 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-12-23 01:01:37,578 INFO L625 ElimStorePlain]: treesize reduction 105, result has 45.6 percent of original size [2020-12-23 01:01:37,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:01:37,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:92, output treesize:88 [2020-12-23 01:01:38,272 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-12-23 01:01:38,583 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-12-23 01:01:39,142 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-12-23 01:01:39,143 INFO L348 Elim1Store]: treesize reduction 17, result has 94.4 percent of original size [2020-12-23 01:01:39,143 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 62 treesize of output 315 [2020-12-23 01:01:39,150 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:01:39,328 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-12-23 01:01:39,329 INFO L625 ElimStorePlain]: treesize reduction 117, result has 52.4 percent of original size [2020-12-23 01:01:39,338 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:01:39,346 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 01:01:39,346 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:93, output treesize:129 [2020-12-23 01:01:39,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:01:39,528 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 01:01:40,004 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 01:01:40,027 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 11, 1] term [2020-12-23 01:01:40,027 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 01:01:40,074 INFO L443 ElimStorePlain]: Different costs {12=[v_prenex_3], 20=[|v_#memory_int_20|, v_prenex_1]} [2020-12-23 01:01:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:01:42,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:01:42,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:01:42,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:01:42,225 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 01:01:42,227 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 62 [2020-12-23 01:01:42,230 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 01:02:05,778 WARN L197 SmtUtils]: Spent 23.55 s on a formula simplification that was a NOOP. DAG size: 102 [2020-12-23 01:02:05,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:02:05,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:02:07,805 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |ULTIMATE.start_main_~#array~0.offset| (+ (* ULTIMATE.start_main_~index2~0 4) (* (+ ~ARR_SIZE~0 (* ULTIMATE.start_main_~index2~0 (- 1)) (- 1)) (* ~ARR_SIZE~0 4)) |ULTIMATE.start_main_~#array~0.offset|)) [2020-12-23 01:02:07,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:02:07,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:02:07,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:02:07,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:02:09,839 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (* ~ARR_SIZE~0 4))) (= (+ .cse0 (* ULTIMATE.start_main_~index2~0 (- 4)) (* (+ ~ARR_SIZE~0 (* ULTIMATE.start_main_~index2~0 (- 1)) (- 1)) .cse0) |ULTIMATE.start_main_~#array~0.offset| (- 4)) (+ .cse0 |ULTIMATE.start_main_~#array~0.offset| 4))) [2020-12-23 01:02:11,866 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (* ~ARR_SIZE~0 4))) (= (+ .cse0 (* ULTIMATE.start_main_~index2~0 (- 4)) (* (+ ~ARR_SIZE~0 (* ULTIMATE.start_main_~index2~0 (- 1)) (- 1)) .cse0) |ULTIMATE.start_main_~#array~0.offset| (- 4)) (+ .cse0 |ULTIMATE.start_main_~#array~0.offset| 4))) [2020-12-23 01:02:13,902 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (+ (* v_ULTIMATE.start_main_~column~0_22 4) |ULTIMATE.start_main_~#array~0.offset|) (+ (* ULTIMATE.start_main_~index2~0 4) (* (+ ~ARR_SIZE~0 (* ULTIMATE.start_main_~index2~0 (- 1)) (- 1)) (* ~ARR_SIZE~0 4)) |ULTIMATE.start_main_~#array~0.offset|)) [2020-12-23 01:02:13,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 01:02:15,920 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (* ~ARR_SIZE~0 4))) (let ((.cse1 (* (+ ~ARR_SIZE~0 (* ULTIMATE.start_main_~index2~0 (- 1)) (- 1)) .cse0))) (= (+ .cse0 (* ULTIMATE.start_main_~index2~0 (- 4)) .cse1 |ULTIMATE.start_main_~#array~0.offset| (- 4)) (+ (* ULTIMATE.start_main_~index2~0 4) .cse1 |ULTIMATE.start_main_~#array~0.offset|)))) [2020-12-23 01:02:17,944 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (* ~ARR_SIZE~0 4))) (let ((.cse1 (* (+ ~ARR_SIZE~0 (* ULTIMATE.start_main_~index2~0 (- 1)) (- 1)) .cse0))) (= (+ .cse0 (* ULTIMATE.start_main_~index2~0 (- 4)) .cse1 |ULTIMATE.start_main_~#array~0.offset| (- 4)) (+ (* ULTIMATE.start_main_~index2~0 4) .cse1 |ULTIMATE.start_main_~#array~0.offset|)))) [2020-12-23 01:02:19,993 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= (let ((.cse0 (* ~ARR_SIZE~0 4))) (+ .cse0 (* ULTIMATE.start_main_~index2~0 (- 4)) (* (+ ~ARR_SIZE~0 (* ULTIMATE.start_main_~index2~0 (- 1)) (- 1)) .cse0) |ULTIMATE.start_main_~#array~0.offset| (- 4))) (+ (* v_ULTIMATE.start_main_~column~0_22 4) |ULTIMATE.start_main_~#array~0.offset|)) [2020-12-23 01:02:22,022 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= (let ((.cse0 (* ~ARR_SIZE~0 4))) (+ .cse0 (* ULTIMATE.start_main_~index2~0 (- 4)) (* (+ ~ARR_SIZE~0 (* ULTIMATE.start_main_~index2~0 (- 1)) (- 1)) .cse0) |ULTIMATE.start_main_~#array~0.offset| (- 4))) (+ (* v_ULTIMATE.start_main_~column~0_22 4) |ULTIMATE.start_main_~#array~0.offset|)) [2020-12-23 01:02:22,022 INFO L244 Elim1Store]: Index analysis took 16227 ms [2020-12-23 01:02:24,177 WARN L197 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 52 [2020-12-23 01:02:24,177 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 01:02:24,178 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 159 treesize of output 354 [2020-12-23 01:02:24,187 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.