/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:38:14,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:38:14,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:38:14,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:38:14,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:38:14,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:38:14,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:38:14,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:38:14,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:38:14,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:38:14,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:38:14,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:38:14,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:38:14,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:38:14,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:38:14,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:38:14,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:38:14,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:38:14,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:38:14,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:38:14,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:38:14,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:38:14,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:38:14,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:38:14,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 05:38:14,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 05:38:14,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 05:38:14,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 05:38:14,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 05:38:14,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 05:38:14,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:38:14,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:38:14,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:38:14,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:38:14,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:38:14,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:38:14,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:38:14,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:38:14,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:38:14,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:38:14,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:38:14,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:38:15,016 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:38:15,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:38:15,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:38:15,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:38:15,022 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:38:15,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:38:15,022 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:38:15,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:38:15,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:38:15,023 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:38:15,024 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:38:15,025 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:38:15,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:38:15,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:38:15,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:38:15,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:38:15,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:38:15,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:38:15,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:38:15,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:38:15,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:38:15,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:38:15,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:38:15,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:38:15,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:38:15,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:38:15,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:38:15,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:38:15,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:38:15,477 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:38:15,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2021-01-07 05:38:15,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/433aad299/35bf2d3aafa34c73ae1a40e3e2179d67/FLAG54995e6ca [2021-01-07 05:38:16,378 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:38:16,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2021-01-07 05:38:16,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/433aad299/35bf2d3aafa34c73ae1a40e3e2179d67/FLAG54995e6ca [2021-01-07 05:38:16,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/433aad299/35bf2d3aafa34c73ae1a40e3e2179d67 [2021-01-07 05:38:16,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:38:16,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:38:16,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:38:16,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:38:16,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:38:16,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:38:16" (1/1) ... [2021-01-07 05:38:16,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2817f238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:16, skipping insertion in model container [2021-01-07 05:38:16,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:38:16" (1/1) ... [2021-01-07 05:38:16,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:38:16,682 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~temp~0,],base],StructAccessExpression[IdentifierExpression[~temp~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~temp~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~temp~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~head~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~last~0,],base],StructAccessExpression[IdentifierExpression[~last~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~last~1,] left hand side expression in assignment: address: IdentifierExpression[~head,] left hand side expression in assignment: lhs: VariableLHS[~snd_to_last~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~snd_to_last~0,],base],StructAccessExpression[IdentifierExpression[~snd_to_last~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-07 05:38:17,069 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/list-simple/sll2c_remove_all_reverse.i[24151,24164] [2021-01-07 05:38:17,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:38:17,092 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~temp~0,],base],StructAccessExpression[IdentifierExpression[~temp~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~temp~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~temp~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~head~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~last~0,],base],StructAccessExpression[IdentifierExpression[~last~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~last~1,] left hand side expression in assignment: address: IdentifierExpression[~head,] left hand side expression in assignment: lhs: VariableLHS[~snd_to_last~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~snd_to_last~0,],base],StructAccessExpression[IdentifierExpression[~snd_to_last~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-07 05:38:17,175 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/list-simple/sll2c_remove_all_reverse.i[24151,24164] [2021-01-07 05:38:17,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:38:17,238 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:38:17,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17 WrapperNode [2021-01-07 05:38:17,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:38:17,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:38:17,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:38:17,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:38:17,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:38:17,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:38:17,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:38:17,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:38:17,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... [2021-01-07 05:38:17,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:38:17,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:38:17,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:38:17,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:38:17,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:38:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:38:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 05:38:17,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 05:38:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:38:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 05:38:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:38:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-01-07 05:38:17,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:38:17,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:38:17,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:38:18,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:38:18,277 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-01-07 05:38:18,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:38:18 BoogieIcfgContainer [2021-01-07 05:38:18,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:38:18,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:38:18,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:38:18,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:38:18,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:38:16" (1/3) ... [2021-01-07 05:38:18,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0207ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:38:18, skipping insertion in model container [2021-01-07 05:38:18,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:38:17" (2/3) ... [2021-01-07 05:38:18,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0207ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:38:18, skipping insertion in model container [2021-01-07 05:38:18,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:38:18" (3/3) ... [2021-01-07 05:38:18,289 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2021-01-07 05:38:18,296 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:38:18,302 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 46 error locations. [2021-01-07 05:38:18,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-01-07 05:38:18,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:38:18,347 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:38:18,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:38:18,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:38:18,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:38:18,348 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:38:18,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:38:18,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:38:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2021-01-07 05:38:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:38:18,374 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:18,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:38:18,375 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:18,382 INFO L82 PathProgramCache]: Analyzing trace with hash 925702, now seen corresponding path program 1 times [2021-01-07 05:38:18,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:18,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914374216] [2021-01-07 05:38:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:18,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914374216] [2021-01-07 05:38:18,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:18,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:38:18,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599842039] [2021-01-07 05:38:18,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:38:18,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:18,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:38:18,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:38:18,619 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2021-01-07 05:38:18,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:18,865 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2021-01-07 05:38:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:38:18,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:38:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:18,879 INFO L225 Difference]: With dead ends: 149 [2021-01-07 05:38:18,879 INFO L226 Difference]: Without dead ends: 145 [2021-01-07 05:38:18,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:38:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-01-07 05:38:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2021-01-07 05:38:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-07 05:38:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-01-07 05:38:18,929 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 4 [2021-01-07 05:38:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:18,929 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-01-07 05:38:18,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:38:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-01-07 05:38:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:38:18,930 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:18,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:38:18,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:38:18,931 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:18,933 INFO L82 PathProgramCache]: Analyzing trace with hash 925703, now seen corresponding path program 1 times [2021-01-07 05:38:18,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:18,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011280540] [2021-01-07 05:38:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:19,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011280540] [2021-01-07 05:38:19,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:19,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:38:19,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256592130] [2021-01-07 05:38:19,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:38:19,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:19,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:38:19,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:38:19,036 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 3 states. [2021-01-07 05:38:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:19,120 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-01-07 05:38:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:38:19,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:38:19,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:19,123 INFO L225 Difference]: With dead ends: 88 [2021-01-07 05:38:19,123 INFO L226 Difference]: Without dead ends: 88 [2021-01-07 05:38:19,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:38:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-07 05:38:19,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-01-07 05:38:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-07 05:38:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2021-01-07 05:38:19,134 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 4 [2021-01-07 05:38:19,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:19,134 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2021-01-07 05:38:19,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:38:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2021-01-07 05:38:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:38:19,135 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:19,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:38:19,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:38:19,136 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:19,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:19,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2097994085, now seen corresponding path program 1 times [2021-01-07 05:38:19,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:19,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209530793] [2021-01-07 05:38:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:19,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209530793] [2021-01-07 05:38:19,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:19,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:38:19,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024240068] [2021-01-07 05:38:19,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:38:19,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:19,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:38:19,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:38:19,269 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 3 states. [2021-01-07 05:38:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:19,286 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-01-07 05:38:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:38:19,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-07 05:38:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:19,288 INFO L225 Difference]: With dead ends: 98 [2021-01-07 05:38:19,288 INFO L226 Difference]: Without dead ends: 98 [2021-01-07 05:38:19,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:38:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-01-07 05:38:19,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2021-01-07 05:38:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-07 05:38:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2021-01-07 05:38:19,300 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 9 [2021-01-07 05:38:19,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:19,300 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2021-01-07 05:38:19,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:38:19,301 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2021-01-07 05:38:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:38:19,301 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:19,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:38:19,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:38:19,302 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:19,303 INFO L82 PathProgramCache]: Analyzing trace with hash 231455864, now seen corresponding path program 1 times [2021-01-07 05:38:19,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:19,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154762017] [2021-01-07 05:38:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:19,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154762017] [2021-01-07 05:38:19,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:19,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:38:19,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271101082] [2021-01-07 05:38:19,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:38:19,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:19,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:38:19,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:38:19,375 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 5 states. [2021-01-07 05:38:19,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:19,613 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2021-01-07 05:38:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:38:19,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-07 05:38:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:19,616 INFO L225 Difference]: With dead ends: 146 [2021-01-07 05:38:19,619 INFO L226 Difference]: Without dead ends: 146 [2021-01-07 05:38:19,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:38:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-01-07 05:38:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 88. [2021-01-07 05:38:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-07 05:38:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2021-01-07 05:38:19,637 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 14 [2021-01-07 05:38:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:19,640 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2021-01-07 05:38:19,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:38:19,641 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2021-01-07 05:38:19,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:38:19,641 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:19,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:38:19,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:38:19,643 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:19,644 INFO L82 PathProgramCache]: Analyzing trace with hash 231455865, now seen corresponding path program 1 times [2021-01-07 05:38:19,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:19,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465697740] [2021-01-07 05:38:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:19,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465697740] [2021-01-07 05:38:19,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:19,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:38:19,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933952744] [2021-01-07 05:38:19,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:38:19,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:19,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:38:19,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:38:19,803 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 5 states. [2021-01-07 05:38:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:19,959 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2021-01-07 05:38:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:38:19,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-07 05:38:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:19,962 INFO L225 Difference]: With dead ends: 92 [2021-01-07 05:38:19,963 INFO L226 Difference]: Without dead ends: 92 [2021-01-07 05:38:19,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:38:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-07 05:38:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2021-01-07 05:38:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 05:38:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-01-07 05:38:19,980 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 14 [2021-01-07 05:38:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:19,980 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-01-07 05:38:19,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:38:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-01-07 05:38:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:38:19,981 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:19,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:38:19,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:38:19,982 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:19,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1879150547, now seen corresponding path program 1 times [2021-01-07 05:38:19,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:19,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363545123] [2021-01-07 05:38:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:38:20,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363545123] [2021-01-07 05:38:20,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:20,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:38:20,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270954245] [2021-01-07 05:38:20,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:38:20,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:20,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:38:20,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:38:20,098 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 6 states. [2021-01-07 05:38:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:20,310 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2021-01-07 05:38:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:38:20,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-07 05:38:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:20,312 INFO L225 Difference]: With dead ends: 139 [2021-01-07 05:38:20,312 INFO L226 Difference]: Without dead ends: 139 [2021-01-07 05:38:20,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:38:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-01-07 05:38:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2021-01-07 05:38:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-07 05:38:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-01-07 05:38:20,319 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 17 [2021-01-07 05:38:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:20,320 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-01-07 05:38:20,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:38:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-01-07 05:38:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:38:20,321 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:20,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:38:20,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:38:20,321 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:20,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:20,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1879150548, now seen corresponding path program 1 times [2021-01-07 05:38:20,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:20,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122658807] [2021-01-07 05:38:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:20,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122658807] [2021-01-07 05:38:20,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880071808] [2021-01-07 05:38:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:20,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-07 05:38:20,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:38:20,597 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:20,598 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:38:20,601 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:20,616 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2021-01-07 05:38:20,622 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:20,623 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:5 [2021-01-07 05:38:20,726 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:20,728 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:38:20,732 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:20,749 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2021-01-07 05:38:20,752 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:20,752 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2021-01-07 05:38:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:38:20,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:38:20,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-01-07 05:38:20,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677859368] [2021-01-07 05:38:20,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:38:20,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:20,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:38:20,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:38:20,800 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 7 states. [2021-01-07 05:38:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:20,945 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-01-07 05:38:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:38:20,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2021-01-07 05:38:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:20,947 INFO L225 Difference]: With dead ends: 85 [2021-01-07 05:38:20,947 INFO L226 Difference]: Without dead ends: 85 [2021-01-07 05:38:20,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:38:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-07 05:38:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-01-07 05:38:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-01-07 05:38:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-01-07 05:38:20,960 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 17 [2021-01-07 05:38:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:20,960 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-01-07 05:38:20,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:38:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-01-07 05:38:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:38:20,961 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:20,961 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] [2021-01-07 05:38:21,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-07 05:38:21,175 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:21,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1917500694, now seen corresponding path program 1 times [2021-01-07 05:38:21,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:21,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862655141] [2021-01-07 05:38:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:38:21,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862655141] [2021-01-07 05:38:21,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:21,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:38:21,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092159279] [2021-01-07 05:38:21,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:38:21,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:21,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:38:21,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:38:21,334 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 8 states. [2021-01-07 05:38:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:21,562 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2021-01-07 05:38:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:38:21,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-01-07 05:38:21,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:21,564 INFO L225 Difference]: With dead ends: 128 [2021-01-07 05:38:21,564 INFO L226 Difference]: Without dead ends: 128 [2021-01-07 05:38:21,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:38:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-01-07 05:38:21,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2021-01-07 05:38:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-07 05:38:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2021-01-07 05:38:21,579 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 21 [2021-01-07 05:38:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:21,580 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2021-01-07 05:38:21,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:38:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2021-01-07 05:38:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-07 05:38:21,581 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:21,581 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] [2021-01-07 05:38:21,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:38:21,581 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1917500695, now seen corresponding path program 1 times [2021-01-07 05:38:21,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:21,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125660669] [2021-01-07 05:38:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:21,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:21,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125660669] [2021-01-07 05:38:21,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026418280] [2021-01-07 05:38:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:21,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-07 05:38:21,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:38:21,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:21,784 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:38:21,787 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:21,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:21,801 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:21,801 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:20 [2021-01-07 05:38:21,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:21,899 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:21,900 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2021-01-07 05:38:21,903 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:21,934 INFO L625 ElimStorePlain]: treesize reduction 14, result has 67.4 percent of original size [2021-01-07 05:38:21,938 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:21,938 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:29 [2021-01-07 05:38:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:22,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:38:22,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-01-07 05:38:22,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826887829] [2021-01-07 05:38:22,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:38:22,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:22,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:38:22,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:38:22,071 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 8 states. [2021-01-07 05:38:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:22,245 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-01-07 05:38:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:38:22,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-01-07 05:38:22,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:22,246 INFO L225 Difference]: With dead ends: 81 [2021-01-07 05:38:22,246 INFO L226 Difference]: Without dead ends: 81 [2021-01-07 05:38:22,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:38:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-07 05:38:22,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2021-01-07 05:38:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-07 05:38:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2021-01-07 05:38:22,250 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 21 [2021-01-07 05:38:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:22,250 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2021-01-07 05:38:22,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:38:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2021-01-07 05:38:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:38:22,251 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:22,251 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] [2021-01-07 05:38:22,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:22,467 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:22,468 INFO L82 PathProgramCache]: Analyzing trace with hash 177198171, now seen corresponding path program 1 times [2021-01-07 05:38:22,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:22,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130046307] [2021-01-07 05:38:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:22,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130046307] [2021-01-07 05:38:22,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:22,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:38:22,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827778795] [2021-01-07 05:38:22,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:38:22,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:38:22,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:38:22,578 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 11 states. [2021-01-07 05:38:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:23,189 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2021-01-07 05:38:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:38:23,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2021-01-07 05:38:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:23,191 INFO L225 Difference]: With dead ends: 117 [2021-01-07 05:38:23,191 INFO L226 Difference]: Without dead ends: 117 [2021-01-07 05:38:23,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:38:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-01-07 05:38:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 76. [2021-01-07 05:38:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-07 05:38:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2021-01-07 05:38:23,195 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 23 [2021-01-07 05:38:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:23,196 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2021-01-07 05:38:23,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:38:23,196 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2021-01-07 05:38:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:38:23,197 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:23,197 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] [2021-01-07 05:38:23,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:38:23,198 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:23,199 INFO L82 PathProgramCache]: Analyzing trace with hash 177198172, now seen corresponding path program 1 times [2021-01-07 05:38:23,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:23,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532529437] [2021-01-07 05:38:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:23,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532529437] [2021-01-07 05:38:23,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:23,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:38:23,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332832025] [2021-01-07 05:38:23,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:38:23,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:23,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:38:23,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:38:23,412 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 11 states. [2021-01-07 05:38:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:24,222 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2021-01-07 05:38:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:38:24,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2021-01-07 05:38:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:24,224 INFO L225 Difference]: With dead ends: 167 [2021-01-07 05:38:24,224 INFO L226 Difference]: Without dead ends: 167 [2021-01-07 05:38:24,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:38:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-01-07 05:38:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 88. [2021-01-07 05:38:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-07 05:38:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-01-07 05:38:24,229 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 23 [2021-01-07 05:38:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:24,229 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-01-07 05:38:24,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:38:24,229 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-01-07 05:38:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:38:24,230 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:24,230 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] [2021-01-07 05:38:24,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:38:24,231 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:24,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:24,231 INFO L82 PathProgramCache]: Analyzing trace with hash 177226100, now seen corresponding path program 1 times [2021-01-07 05:38:24,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:24,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089093684] [2021-01-07 05:38:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:38:24,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089093684] [2021-01-07 05:38:24,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:24,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:38:24,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962836441] [2021-01-07 05:38:24,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:38:24,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:24,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:38:24,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:38:24,276 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 4 states. [2021-01-07 05:38:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:24,288 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-01-07 05:38:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:38:24,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-01-07 05:38:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:24,290 INFO L225 Difference]: With dead ends: 128 [2021-01-07 05:38:24,290 INFO L226 Difference]: Without dead ends: 128 [2021-01-07 05:38:24,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:38:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-01-07 05:38:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 87. [2021-01-07 05:38:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 05:38:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2021-01-07 05:38:24,294 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 23 [2021-01-07 05:38:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:24,295 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2021-01-07 05:38:24,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:38:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2021-01-07 05:38:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:38:24,296 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:24,296 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] [2021-01-07 05:38:24,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-07 05:38:24,296 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:24,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1742811354, now seen corresponding path program 1 times [2021-01-07 05:38:24,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:24,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803494118] [2021-01-07 05:38:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:24,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803494118] [2021-01-07 05:38:24,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723527220] [2021-01-07 05:38:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:24,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-07 05:38:24,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:38:24,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:24,707 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:38:24,708 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:24,722 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:24,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:24,729 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:38:24,730 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:24,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:24,747 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:24,748 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:32 [2021-01-07 05:38:24,966 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_52|], 6=[|v_#valid_61|]} [2021-01-07 05:38:24,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:24,975 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:38:24,978 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:24,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:24,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:25,047 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:25,048 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2021-01-07 05:38:25,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:38:25,053 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:38:25,059 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:25,073 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:25,075 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:25,075 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:35 [2021-01-07 05:38:25,273 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:38:25,274 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:25,289 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:25,290 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:25,291 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2021-01-07 05:38:25,445 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:25,446 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 56 [2021-01-07 05:38:25,453 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2021-01-07 05:38:25,454 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-07 05:38:25,455 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:25,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:25,481 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:25,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:55 [2021-01-07 05:38:25,925 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 85 treesize of output 65 [2021-01-07 05:38:25,928 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:25,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:25,948 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:25,948 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:114, output treesize:91 [2021-01-07 05:38:26,204 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:26,205 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 72 [2021-01-07 05:38:26,210 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:38:26,213 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:26,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:26,229 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:26,230 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:95, output treesize:29 [2021-01-07 05:38:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:26,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:38:26,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2021-01-07 05:38:26,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986852984] [2021-01-07 05:38:26,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-07 05:38:26,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:26,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-07 05:38:26,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:38:26,389 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand 35 states. [2021-01-07 05:38:27,073 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-01-07 05:38:27,564 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-01-07 05:38:27,866 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2021-01-07 05:38:28,284 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2021-01-07 05:38:28,739 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2021-01-07 05:38:29,239 WARN L197 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2021-01-07 05:38:29,894 WARN L197 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2021-01-07 05:38:30,433 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2021-01-07 05:38:31,543 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 115 [2021-01-07 05:38:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:32,237 INFO L93 Difference]: Finished difference Result 238 states and 262 transitions. [2021-01-07 05:38:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:38:32,238 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 28 [2021-01-07 05:38:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:32,240 INFO L225 Difference]: With dead ends: 238 [2021-01-07 05:38:32,240 INFO L226 Difference]: Without dead ends: 238 [2021-01-07 05:38:32,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=427, Invalid=2653, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:38:32,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-01-07 05:38:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 107. [2021-01-07 05:38:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-07 05:38:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-01-07 05:38:32,248 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 28 [2021-01-07 05:38:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:32,249 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-01-07 05:38:32,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-07 05:38:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-01-07 05:38:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:38:32,250 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:32,250 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] [2021-01-07 05:38:32,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-07 05:38:32,465 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:32,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1742811353, now seen corresponding path program 1 times [2021-01-07 05:38:32,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:32,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524514154] [2021-01-07 05:38:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:32,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524514154] [2021-01-07 05:38:32,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680366772] [2021-01-07 05:38:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:33,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 73 conjunts are in the unsatisfiable core [2021-01-07 05:38:33,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:38:33,039 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_53|], 3=[|v_#valid_62|]} [2021-01-07 05:38:33,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:33,048 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:38:33,049 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:33,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:33,076 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-01-07 05:38:33,079 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,091 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,092 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,092 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:27 [2021-01-07 05:38:33,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:33,334 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-01-07 05:38:33,336 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:38:33,339 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:38:33,342 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,360 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,370 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,370 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 30 [2021-01-07 05:38:33,372 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,409 INFO L625 ElimStorePlain]: treesize reduction 8, result has 80.0 percent of original size [2021-01-07 05:38:33,411 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,411 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:32 [2021-01-07 05:38:33,659 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:38:33,660 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,679 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,684 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:38:33,685 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,705 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,705 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:44 [2021-01-07 05:38:33,908 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,908 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-01-07 05:38:33,911 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2021-01-07 05:38:33,912 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-07 05:38:33,914 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,940 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,947 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-01-07 05:38:33,949 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:33,974 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:33,976 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:33,976 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:94, output treesize:78 [2021-01-07 05:38:34,844 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:34,845 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 122 [2021-01-07 05:38:34,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-07 05:38:34,852 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-07 05:38:34,853 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:34,898 INFO L625 ElimStorePlain]: treesize reduction 13, result has 84.5 percent of original size [2021-01-07 05:38:34,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:34,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:34,905 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16 [2021-01-07 05:38:34,907 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:34,920 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:34,923 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:34,923 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:177, output treesize:30 [2021-01-07 05:38:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:35,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:38:35,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-01-07 05:38:35,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251735750] [2021-01-07 05:38:35,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:38:35,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:35,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:38:35,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1187, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:38:35,175 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 36 states. [2021-01-07 05:38:35,680 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-01-07 05:38:36,215 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2021-01-07 05:38:36,454 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-01-07 05:38:36,739 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-01-07 05:38:36,980 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-01-07 05:38:37,199 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2021-01-07 05:38:37,484 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2021-01-07 05:38:37,861 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 99 [2021-01-07 05:38:38,385 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 124 [2021-01-07 05:38:39,068 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 161 [2021-01-07 05:38:39,824 WARN L197 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 172 [2021-01-07 05:38:40,547 WARN L197 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 172 [2021-01-07 05:38:41,348 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 176 [2021-01-07 05:38:42,237 WARN L197 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 181 [2021-01-07 05:38:42,990 WARN L197 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 166 [2021-01-07 05:38:43,860 WARN L197 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 162 [2021-01-07 05:38:44,417 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 99 [2021-01-07 05:38:45,181 WARN L197 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 173 [2021-01-07 05:38:45,814 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2021-01-07 05:38:46,478 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 159 [2021-01-07 05:38:47,916 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 152 [2021-01-07 05:38:48,489 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2021-01-07 05:38:49,361 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-01-07 05:38:49,909 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 147 [2021-01-07 05:38:50,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:50,389 INFO L93 Difference]: Finished difference Result 323 states and 350 transitions. [2021-01-07 05:38:50,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-07 05:38:50,390 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 28 [2021-01-07 05:38:50,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:50,391 INFO L225 Difference]: With dead ends: 323 [2021-01-07 05:38:50,392 INFO L226 Difference]: Without dead ends: 323 [2021-01-07 05:38:50,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=678, Invalid=3482, Unknown=0, NotChecked=0, Total=4160 [2021-01-07 05:38:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-01-07 05:38:50,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 106. [2021-01-07 05:38:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-01-07 05:38:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2021-01-07 05:38:50,398 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 28 [2021-01-07 05:38:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:50,398 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2021-01-07 05:38:50,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:38:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2021-01-07 05:38:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-07 05:38:50,400 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:50,400 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] [2021-01-07 05:38:50,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:50,607 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:50,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:50,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1805793831, now seen corresponding path program 1 times [2021-01-07 05:38:50,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:50,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756832465] [2021-01-07 05:38:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:50,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756832465] [2021-01-07 05:38:50,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:50,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-07 05:38:50,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038568883] [2021-01-07 05:38:50,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:38:50,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:50,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:38:50,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:38:50,722 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand 10 states. [2021-01-07 05:38:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:51,154 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2021-01-07 05:38:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:38:51,156 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2021-01-07 05:38:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:51,157 INFO L225 Difference]: With dead ends: 163 [2021-01-07 05:38:51,157 INFO L226 Difference]: Without dead ends: 163 [2021-01-07 05:38:51,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:38:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-01-07 05:38:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 122. [2021-01-07 05:38:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-07 05:38:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2021-01-07 05:38:51,161 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 29 [2021-01-07 05:38:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:51,162 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2021-01-07 05:38:51,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:38:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2021-01-07 05:38:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:38:51,163 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:51,163 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, 1] [2021-01-07 05:38:51,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:38:51,163 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:51,164 INFO L82 PathProgramCache]: Analyzing trace with hash 145034046, now seen corresponding path program 1 times [2021-01-07 05:38:51,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:51,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974992788] [2021-01-07 05:38:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:51,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974992788] [2021-01-07 05:38:51,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:51,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-07 05:38:51,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057941406] [2021-01-07 05:38:51,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:38:51,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:51,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:38:51,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:38:51,270 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 10 states. [2021-01-07 05:38:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:51,751 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2021-01-07 05:38:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:38:51,752 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2021-01-07 05:38:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:51,753 INFO L225 Difference]: With dead ends: 159 [2021-01-07 05:38:51,753 INFO L226 Difference]: Without dead ends: 159 [2021-01-07 05:38:51,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:38:51,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-01-07 05:38:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 132. [2021-01-07 05:38:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-07 05:38:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2021-01-07 05:38:51,758 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 30 [2021-01-07 05:38:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:51,758 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2021-01-07 05:38:51,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:38:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2021-01-07 05:38:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:38:51,759 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:51,759 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, 1] [2021-01-07 05:38:51,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:38:51,760 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash 145464995, now seen corresponding path program 1 times [2021-01-07 05:38:51,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:51,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304989278] [2021-01-07 05:38:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:38:51,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304989278] [2021-01-07 05:38:51,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:51,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:38:51,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326901405] [2021-01-07 05:38:51,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:38:51,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:51,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:38:51,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:38:51,858 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand 5 states. [2021-01-07 05:38:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:51,992 INFO L93 Difference]: Finished difference Result 173 states and 210 transitions. [2021-01-07 05:38:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:38:51,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-01-07 05:38:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:51,997 INFO L225 Difference]: With dead ends: 173 [2021-01-07 05:38:51,997 INFO L226 Difference]: Without dead ends: 173 [2021-01-07 05:38:51,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:38:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-01-07 05:38:52,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 147. [2021-01-07 05:38:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2021-01-07 05:38:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2021-01-07 05:38:52,002 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 30 [2021-01-07 05:38:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:52,002 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2021-01-07 05:38:52,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:38:52,003 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2021-01-07 05:38:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-07 05:38:52,003 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:52,003 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, 1, 1] [2021-01-07 05:38:52,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:38:52,004 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:52,004 INFO L82 PathProgramCache]: Analyzing trace with hash 201088265, now seen corresponding path program 1 times [2021-01-07 05:38:52,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:52,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260280281] [2021-01-07 05:38:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:38:52,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260280281] [2021-01-07 05:38:52,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:38:52,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:38:52,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553621841] [2021-01-07 05:38:52,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:38:52,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:52,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:38:52,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:38:52,073 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand 7 states. [2021-01-07 05:38:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:52,280 INFO L93 Difference]: Finished difference Result 171 states and 206 transitions. [2021-01-07 05:38:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:38:52,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2021-01-07 05:38:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:52,282 INFO L225 Difference]: With dead ends: 171 [2021-01-07 05:38:52,282 INFO L226 Difference]: Without dead ends: 171 [2021-01-07 05:38:52,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:38:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-01-07 05:38:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 146. [2021-01-07 05:38:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-07 05:38:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2021-01-07 05:38:52,288 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 31 [2021-01-07 05:38:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:52,289 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2021-01-07 05:38:52,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:38:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2021-01-07 05:38:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-07 05:38:52,289 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:52,289 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, 1, 1, 1] [2021-01-07 05:38:52,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:38:52,290 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:52,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1938769057, now seen corresponding path program 1 times [2021-01-07 05:38:52,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:52,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782248321] [2021-01-07 05:38:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:52,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782248321] [2021-01-07 05:38:52,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342883746] [2021-01-07 05:38:52,507 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:52,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:38:52,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:38:52,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:38:52,714 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:38:52,715 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:52,721 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:52,723 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:52,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:16 [2021-01-07 05:38:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:38:52,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:38:52,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-01-07 05:38:52,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873005909] [2021-01-07 05:38:52,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:38:52,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:52,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:38:52,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:38:52,764 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand 7 states. [2021-01-07 05:38:52,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:38:52,999 INFO L93 Difference]: Finished difference Result 152 states and 186 transitions. [2021-01-07 05:38:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:38:52,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-01-07 05:38:52,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:38:53,001 INFO L225 Difference]: With dead ends: 152 [2021-01-07 05:38:53,002 INFO L226 Difference]: Without dead ends: 152 [2021-01-07 05:38:53,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:38:53,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-01-07 05:38:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2021-01-07 05:38:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-01-07 05:38:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2021-01-07 05:38:53,008 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 32 [2021-01-07 05:38:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:38:53,008 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2021-01-07 05:38:53,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:38:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2021-01-07 05:38:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:38:53,009 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:38:53,009 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] [2021-01-07 05:38:53,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:53,225 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:38:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:38:53,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1229183803, now seen corresponding path program 2 times [2021-01-07 05:38:53,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:38:53,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943984192] [2021-01-07 05:38:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:38:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:38:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:53,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943984192] [2021-01-07 05:38:53,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276897963] [2021-01-07 05:38:53,694 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:38:53,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:38:53,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:38:53,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 83 conjunts are in the unsatisfiable core [2021-01-07 05:38:53,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:38:53,824 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:53,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2021-01-07 05:38:53,826 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:53,832 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:53,833 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:53,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:11 [2021-01-07 05:38:54,045 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:54,046 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2021-01-07 05:38:54,047 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:38:54,049 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:38:54,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:38:54,053 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:54,072 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:54,073 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:54,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:34 [2021-01-07 05:38:54,308 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:38:54,308 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:54,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:54,333 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:38:54,334 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:54,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:54,357 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:54,357 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:50, output treesize:42 [2021-01-07 05:38:54,523 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 47 [2021-01-07 05:38:54,525 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:54,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:54,572 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:54,572 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 78 [2021-01-07 05:38:54,577 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2021-01-07 05:38:54,577 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-07 05:38:54,578 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:38:54,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:54,600 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:38:54,601 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:78 [2021-01-07 05:38:55,222 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:55,223 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 145 [2021-01-07 05:38:55,228 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:38:55,235 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:38:55,237 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:55,273 INFO L625 ElimStorePlain]: treesize reduction 16, result has 84.5 percent of original size [2021-01-07 05:38:55,275 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:55,276 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:193, output treesize:87 [2021-01-07 05:38:55,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:38:55,539 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:55,542 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 63 [2021-01-07 05:38:55,550 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:55,568 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:38:55,577 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:38:55,577 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:91, output treesize:15 [2021-01-07 05:38:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:38:55,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:38:55,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-01-07 05:38:55,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884381636] [2021-01-07 05:38:55,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-07 05:38:55,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:38:55,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-07 05:38:55,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:38:55,749 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand 40 states. [2021-01-07 05:38:56,954 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-01-07 05:38:57,229 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-01-07 05:38:57,629 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2021-01-07 05:38:58,164 WARN L197 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 122 [2021-01-07 05:38:58,785 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 128 [2021-01-07 05:38:59,387 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 128 [2021-01-07 05:39:00,126 WARN L197 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 146 [2021-01-07 05:39:00,787 WARN L197 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 140 [2021-01-07 05:39:01,486 WARN L197 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 142 [2021-01-07 05:39:02,268 WARN L197 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 145 [2021-01-07 05:39:02,959 WARN L197 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 125 [2021-01-07 05:39:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:03,714 INFO L93 Difference]: Finished difference Result 221 states and 251 transitions. [2021-01-07 05:39:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:39:03,715 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 33 [2021-01-07 05:39:03,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:03,716 INFO L225 Difference]: With dead ends: 221 [2021-01-07 05:39:03,716 INFO L226 Difference]: Without dead ends: 221 [2021-01-07 05:39:03,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=489, Invalid=3293, Unknown=0, NotChecked=0, Total=3782 [2021-01-07 05:39:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-01-07 05:39:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 148. [2021-01-07 05:39:03,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-01-07 05:39:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 182 transitions. [2021-01-07 05:39:03,722 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 182 transitions. Word has length 33 [2021-01-07 05:39:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:03,723 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 182 transitions. [2021-01-07 05:39:03,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-07 05:39:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 182 transitions. [2021-01-07 05:39:03,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:39:03,723 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:03,723 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] [2021-01-07 05:39:03,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:03,938 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:03,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:03,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1229183804, now seen corresponding path program 2 times [2021-01-07 05:39:03,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:03,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418206121] [2021-01-07 05:39:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:39:04,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418206121] [2021-01-07 05:39:04,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755311015] [2021-01-07 05:39:04,434 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:04,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:39:04,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:39:04,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 93 conjunts are in the unsatisfiable core [2021-01-07 05:39:04,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:39:04,620 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:39:04,621 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:39:04,622 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:04,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:04,632 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:04,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:17 [2021-01-07 05:39:04,865 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:04,865 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2021-01-07 05:39:04,867 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:04,868 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:04,870 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:04,887 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:04,888 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:04,888 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:27 [2021-01-07 05:39:05,168 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:39:05,169 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:05,193 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:05,201 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:39:05,207 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:05,226 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:05,228 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:05,228 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:38 [2021-01-07 05:39:05,418 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 47 [2021-01-07 05:39:05,419 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:05,443 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:05,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:39:05,462 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:05,463 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 53 [2021-01-07 05:39:05,465 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 2, 1] term [2021-01-07 05:39:05,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-07 05:39:05,467 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:05,490 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:05,491 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:05,491 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:82, output treesize:66 [2021-01-07 05:39:06,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:39:06,541 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:06,541 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 123 [2021-01-07 05:39:06,545 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:06,573 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:06,584 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:06,585 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 40 [2021-01-07 05:39:06,589 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:06,602 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:06,605 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:06,605 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:211, output treesize:13 [2021-01-07 05:39:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:39:06,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:39:06,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 40 [2021-01-07 05:39:06,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195982603] [2021-01-07 05:39:06,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-07 05:39:06,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:06,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-07 05:39:06,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1442, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:39:06,693 INFO L87 Difference]: Start difference. First operand 148 states and 182 transitions. Second operand 40 states. [2021-01-07 05:39:07,546 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2021-01-07 05:39:08,036 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-01-07 05:39:08,401 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2021-01-07 05:39:08,907 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2021-01-07 05:39:09,551 WARN L197 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2021-01-07 05:39:10,258 WARN L197 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 128 [2021-01-07 05:39:10,985 WARN L197 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 128 [2021-01-07 05:39:11,883 WARN L197 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2021-01-07 05:39:12,603 WARN L197 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2021-01-07 05:39:13,373 WARN L197 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 140 [2021-01-07 05:39:14,170 WARN L197 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2021-01-07 05:39:14,794 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2021-01-07 05:39:15,726 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2021-01-07 05:39:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:16,362 INFO L93 Difference]: Finished difference Result 190 states and 216 transitions. [2021-01-07 05:39:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-01-07 05:39:16,365 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 33 [2021-01-07 05:39:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:16,366 INFO L225 Difference]: With dead ends: 190 [2021-01-07 05:39:16,366 INFO L226 Difference]: Without dead ends: 190 [2021-01-07 05:39:16,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=531, Invalid=3009, Unknown=0, NotChecked=0, Total=3540 [2021-01-07 05:39:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-01-07 05:39:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 145. [2021-01-07 05:39:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-01-07 05:39:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 177 transitions. [2021-01-07 05:39:16,370 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 177 transitions. Word has length 33 [2021-01-07 05:39:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:16,370 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 177 transitions. [2021-01-07 05:39:16,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-07 05:39:16,371 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 177 transitions. [2021-01-07 05:39:16,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-07 05:39:16,371 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:16,371 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2021-01-07 05:39:16,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:16,586 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:16,587 INFO L82 PathProgramCache]: Analyzing trace with hash -851104073, now seen corresponding path program 1 times [2021-01-07 05:39:16,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:16,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780392727] [2021-01-07 05:39:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:39:16,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780392727] [2021-01-07 05:39:16,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250110010] [2021-01-07 05:39:16,639 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:16,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-07 05:39:16,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:39:16,766 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:39:16,767 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:39:16,770 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:16,777 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:16,778 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:16,778 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2021-01-07 05:39:16,831 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:16,831 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:39:16,835 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:16,854 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2021-01-07 05:39:16,855 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:16,856 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2021-01-07 05:39:16,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:16,913 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:39:16,914 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:16,921 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:16,923 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:16,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:16 [2021-01-07 05:39:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:39:16,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:39:16,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-01-07 05:39:16,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178730636] [2021-01-07 05:39:16,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:39:16,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:16,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:39:16,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:39:16,978 INFO L87 Difference]: Start difference. First operand 145 states and 177 transitions. Second operand 9 states. [2021-01-07 05:39:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:17,439 INFO L93 Difference]: Finished difference Result 185 states and 211 transitions. [2021-01-07 05:39:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:39:17,440 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2021-01-07 05:39:17,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:17,442 INFO L225 Difference]: With dead ends: 185 [2021-01-07 05:39:17,442 INFO L226 Difference]: Without dead ends: 185 [2021-01-07 05:39:17,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:39:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-01-07 05:39:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 143. [2021-01-07 05:39:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-01-07 05:39:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 174 transitions. [2021-01-07 05:39:17,447 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 174 transitions. Word has length 35 [2021-01-07 05:39:17,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:17,447 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 174 transitions. [2021-01-07 05:39:17,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:39:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 174 transitions. [2021-01-07 05:39:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-07 05:39:17,448 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:17,448 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, 1, 1, 1, 1] [2021-01-07 05:39:17,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:39:17,664 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:17,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:17,665 INFO L82 PathProgramCache]: Analyzing trace with hash 79559032, now seen corresponding path program 1 times [2021-01-07 05:39:17,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:17,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347190975] [2021-01-07 05:39:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:39:17,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347190975] [2021-01-07 05:39:17,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:39:17,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:39:17,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108390071] [2021-01-07 05:39:17,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:39:17,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:17,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:39:17,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:39:17,774 INFO L87 Difference]: Start difference. First operand 143 states and 174 transitions. Second operand 11 states. [2021-01-07 05:39:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:18,356 INFO L93 Difference]: Finished difference Result 169 states and 199 transitions. [2021-01-07 05:39:18,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:39:18,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2021-01-07 05:39:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:18,358 INFO L225 Difference]: With dead ends: 169 [2021-01-07 05:39:18,358 INFO L226 Difference]: Without dead ends: 169 [2021-01-07 05:39:18,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:39:18,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-01-07 05:39:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 146. [2021-01-07 05:39:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-07 05:39:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 178 transitions. [2021-01-07 05:39:18,363 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 178 transitions. Word has length 35 [2021-01-07 05:39:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:18,363 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 178 transitions. [2021-01-07 05:39:18,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:39:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 178 transitions. [2021-01-07 05:39:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-07 05:39:18,364 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:18,364 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, 1, 1, 1, 1] [2021-01-07 05:39:18,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-07 05:39:18,364 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:18,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:18,365 INFO L82 PathProgramCache]: Analyzing trace with hash 79559033, now seen corresponding path program 1 times [2021-01-07 05:39:18,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:18,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031166059] [2021-01-07 05:39:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:39:18,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031166059] [2021-01-07 05:39:18,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:39:18,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-01-07 05:39:18,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363935458] [2021-01-07 05:39:18,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:39:18,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:18,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:39:18,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:39:18,562 INFO L87 Difference]: Start difference. First operand 146 states and 178 transitions. Second operand 11 states. [2021-01-07 05:39:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:19,349 INFO L93 Difference]: Finished difference Result 193 states and 223 transitions. [2021-01-07 05:39:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:39:19,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2021-01-07 05:39:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:19,351 INFO L225 Difference]: With dead ends: 193 [2021-01-07 05:39:19,351 INFO L226 Difference]: Without dead ends: 193 [2021-01-07 05:39:19,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:39:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-01-07 05:39:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2021-01-07 05:39:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-01-07 05:39:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2021-01-07 05:39:19,357 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 35 [2021-01-07 05:39:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:19,357 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2021-01-07 05:39:19,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:39:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2021-01-07 05:39:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-07 05:39:19,358 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:19,358 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-01-07 05:39:19,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-07 05:39:19,358 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:19,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:19,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1318876664, now seen corresponding path program 3 times [2021-01-07 05:39:19,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:19,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305053932] [2021-01-07 05:39:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:39:19,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305053932] [2021-01-07 05:39:19,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472669154] [2021-01-07 05:39:19,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:19,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:39:19,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:39:19,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:39:19,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:39:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:39:19,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:39:19,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-01-07 05:39:19,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188949459] [2021-01-07 05:39:19,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:39:19,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:19,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:39:19,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:39:19,622 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand 4 states. [2021-01-07 05:39:19,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:19,631 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2021-01-07 05:39:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:39:19,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-01-07 05:39:19,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:19,632 INFO L225 Difference]: With dead ends: 125 [2021-01-07 05:39:19,632 INFO L226 Difference]: Without dead ends: 125 [2021-01-07 05:39:19,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:39:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-07 05:39:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-01-07 05:39:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-07 05:39:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2021-01-07 05:39:19,636 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 36 [2021-01-07 05:39:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:19,636 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2021-01-07 05:39:19,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:39:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2021-01-07 05:39:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-07 05:39:19,637 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:19,637 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2021-01-07 05:39:19,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:19,851 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:19,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1867226692, now seen corresponding path program 1 times [2021-01-07 05:39:19,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:19,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651032497] [2021-01-07 05:39:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:39:20,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651032497] [2021-01-07 05:39:20,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300137205] [2021-01-07 05:39:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:20,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 70 conjunts are in the unsatisfiable core [2021-01-07 05:39:20,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:39:20,790 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:20,790 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:39:20,792 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:20,794 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:20,796 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:20,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:20,803 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:20,803 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2021-01-07 05:39:20,956 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:39:20,957 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:20,964 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:20,965 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:20,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2021-01-07 05:39:21,097 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:21,098 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2021-01-07 05:39:21,100 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 2, 1] term [2021-01-07 05:39:21,101 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:39:21,101 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:21,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:21,110 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:21,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2021-01-07 05:39:22,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:39:22,141 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:22,142 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 62 treesize of output 96 [2021-01-07 05:39:22,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:22,147 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:22,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:22,171 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:22,171 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:85, output treesize:41 [2021-01-07 05:39:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:39:22,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:39:22,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 39 [2021-01-07 05:39:22,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941338907] [2021-01-07 05:39:22,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:39:22,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:22,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:39:22,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:39:22,301 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand 39 states. [2021-01-07 05:39:23,762 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2021-01-07 05:39:23,980 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-01-07 05:39:24,230 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2021-01-07 05:39:24,527 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2021-01-07 05:39:24,792 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2021-01-07 05:39:25,076 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2021-01-07 05:39:25,327 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2021-01-07 05:39:25,636 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2021-01-07 05:39:25,966 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-01-07 05:39:26,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:26,489 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-01-07 05:39:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:39:26,491 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 37 [2021-01-07 05:39:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:26,492 INFO L225 Difference]: With dead ends: 138 [2021-01-07 05:39:26,492 INFO L226 Difference]: Without dead ends: 136 [2021-01-07 05:39:26,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=514, Invalid=2792, Unknown=0, NotChecked=0, Total=3306 [2021-01-07 05:39:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-07 05:39:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 123. [2021-01-07 05:39:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-01-07 05:39:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2021-01-07 05:39:26,497 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 37 [2021-01-07 05:39:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:26,497 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2021-01-07 05:39:26,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:39:26,497 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2021-01-07 05:39:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-07 05:39:26,498 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:26,498 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, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:39:26,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:39:26,707 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:26,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:26,708 INFO L82 PathProgramCache]: Analyzing trace with hash -678731386, now seen corresponding path program 1 times [2021-01-07 05:39:26,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:26,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905251584] [2021-01-07 05:39:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:39:27,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905251584] [2021-01-07 05:39:27,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239179802] [2021-01-07 05:39:27,097 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:27,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 61 conjunts are in the unsatisfiable core [2021-01-07 05:39:27,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:39:27,283 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_56|], 3=[|v_#valid_73|]} [2021-01-07 05:39:27,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:27,290 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:39:27,291 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:27,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:27,313 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-01-07 05:39:27,315 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,326 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,326 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,327 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:24 [2021-01-07 05:39:27,506 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_57|], 3=[|v_#valid_74|]} [2021-01-07 05:39:27,516 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,517 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:39:27,519 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,533 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,549 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,549 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-01-07 05:39:27,551 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:27,551 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:27,554 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,564 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,564 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:19 [2021-01-07 05:39:27,745 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:39:27,746 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,757 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,758 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:39:27,912 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,912 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 53 [2021-01-07 05:39:27,915 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2021-01-07 05:39:27,916 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-07 05:39:27,919 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:27,932 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:27,933 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:27,934 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:39 [2021-01-07 05:39:28,434 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 82 treesize of output 62 [2021-01-07 05:39:28,436 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:28,451 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:28,454 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:28,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:97, output treesize:74 [2021-01-07 05:39:28,673 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:28,673 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 64 [2021-01-07 05:39:28,677 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:28,678 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2021-01-07 05:39:28,685 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:39:28,699 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:28,702 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:28,702 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:78, output treesize:3 [2021-01-07 05:39:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-07 05:39:28,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:39:28,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-01-07 05:39:28,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041617889] [2021-01-07 05:39:28,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-01-07 05:39:28,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:28,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-01-07 05:39:28,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1106, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:39:28,803 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand 35 states. [2021-01-07 05:39:29,563 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-01-07 05:39:29,766 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-01-07 05:39:29,996 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-01-07 05:39:30,310 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-01-07 05:39:30,550 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-01-07 05:39:30,872 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-01-07 05:39:31,297 WARN L197 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2021-01-07 05:39:31,758 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2021-01-07 05:39:32,200 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2021-01-07 05:39:32,692 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 114 [2021-01-07 05:39:33,157 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2021-01-07 05:39:33,806 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2021-01-07 05:39:34,297 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2021-01-07 05:39:34,835 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 124 [2021-01-07 05:39:35,204 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2021-01-07 05:39:35,813 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2021-01-07 05:39:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:38,408 INFO L93 Difference]: Finished difference Result 148 states and 168 transitions. [2021-01-07 05:39:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:39:38,408 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 38 [2021-01-07 05:39:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:38,410 INFO L225 Difference]: With dead ends: 148 [2021-01-07 05:39:38,410 INFO L226 Difference]: Without dead ends: 148 [2021-01-07 05:39:38,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=506, Invalid=2574, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:39:38,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-01-07 05:39:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2021-01-07 05:39:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-01-07 05:39:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2021-01-07 05:39:38,414 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 38 [2021-01-07 05:39:38,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:38,414 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2021-01-07 05:39:38,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-01-07 05:39:38,414 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2021-01-07 05:39:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-07 05:39:38,415 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:38,415 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:39:38,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:39:38,630 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:38,631 INFO L82 PathProgramCache]: Analyzing trace with hash 434215342, now seen corresponding path program 1 times [2021-01-07 05:39:38,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:38,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018503214] [2021-01-07 05:39:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:39:38,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018503214] [2021-01-07 05:39:38,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651702648] [2021-01-07 05:39:38,799 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:38,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:39:38,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:39:39,204 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:39,204 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2021-01-07 05:39:39,206 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:39,210 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:39,211 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:39,230 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:39,241 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:39,241 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-01-07 05:39:39,243 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:39,245 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:39,246 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:39,251 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:39,252 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:39,253 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:61, output treesize:7 [2021-01-07 05:39:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:39:39,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:39:39,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-01-07 05:39:39,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630410906] [2021-01-07 05:39:39,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:39:39,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:39,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:39:39,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:39:39,295 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 17 states. [2021-01-07 05:39:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:40,488 INFO L93 Difference]: Finished difference Result 187 states and 215 transitions. [2021-01-07 05:39:40,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:39:40,488 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2021-01-07 05:39:40,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:40,492 INFO L225 Difference]: With dead ends: 187 [2021-01-07 05:39:40,492 INFO L226 Difference]: Without dead ends: 187 [2021-01-07 05:39:40,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:39:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-01-07 05:39:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 135. [2021-01-07 05:39:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-01-07 05:39:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 166 transitions. [2021-01-07 05:39:40,497 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 166 transitions. Word has length 39 [2021-01-07 05:39:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:40,497 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 166 transitions. [2021-01-07 05:39:40,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:39:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 166 transitions. [2021-01-07 05:39:40,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-07 05:39:40,498 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:40,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:39:40,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:39:40,714 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:40,715 INFO L82 PathProgramCache]: Analyzing trace with hash 574172457, now seen corresponding path program 1 times [2021-01-07 05:39:40,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:40,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237545591] [2021-01-07 05:39:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:39:40,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237545591] [2021-01-07 05:39:40,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597759279] [2021-01-07 05:39:40,849 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:40,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:39:40,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:39:41,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:41,041 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:39:41,042 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:41,049 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:41,051 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:41,051 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:16 [2021-01-07 05:39:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:39:41,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:39:41,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2021-01-07 05:39:41,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31188835] [2021-01-07 05:39:41,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:39:41,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:39:41,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:39:41,080 INFO L87 Difference]: Start difference. First operand 135 states and 166 transitions. Second operand 7 states. [2021-01-07 05:39:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:39:41,350 INFO L93 Difference]: Finished difference Result 140 states and 171 transitions. [2021-01-07 05:39:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:39:41,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2021-01-07 05:39:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:39:41,351 INFO L225 Difference]: With dead ends: 140 [2021-01-07 05:39:41,352 INFO L226 Difference]: Without dead ends: 140 [2021-01-07 05:39:41,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:39:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-01-07 05:39:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2021-01-07 05:39:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-01-07 05:39:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2021-01-07 05:39:41,355 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 40 [2021-01-07 05:39:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:39:41,356 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2021-01-07 05:39:41,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:39:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2021-01-07 05:39:41,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-07 05:39:41,356 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:39:41,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:39:41,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:39:41,565 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:39:41,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:39:41,566 INFO L82 PathProgramCache]: Analyzing trace with hash 619477096, now seen corresponding path program 1 times [2021-01-07 05:39:41,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:39:41,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869146494] [2021-01-07 05:39:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:39:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:39:42,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869146494] [2021-01-07 05:39:42,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876337010] [2021-01-07 05:39:42,236 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:39:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:39:42,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 103 conjunts are in the unsatisfiable core [2021-01-07 05:39:42,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:39:42,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:42,423 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:39:42,424 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:42,436 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:42,437 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:42,437 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:22 [2021-01-07 05:39:42,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:42,718 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:39:42,720 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:42,736 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:42,737 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:42,737 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:21 [2021-01-07 05:39:43,110 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 11 treesize of output 7 [2021-01-07 05:39:43,112 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:43,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:43,133 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:39:43,133 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2021-01-07 05:39:43,364 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_35|], 2=[|v_#memory_$Pointer$.base_42|]} [2021-01-07 05:39:43,373 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 19 treesize of output 11 [2021-01-07 05:39:43,374 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:43,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:43,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:39:43,414 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:43,415 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 46 [2021-01-07 05:39:43,417 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 2, 1] term [2021-01-07 05:39:43,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-07 05:39:43,419 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-01-07 05:39:43,472 INFO L625 ElimStorePlain]: treesize reduction 29, result has 61.8 percent of original size [2021-01-07 05:39:43,475 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:43,475 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:47 [2021-01-07 05:39:44,940 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 4, 1] term [2021-01-07 05:39:44,940 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:47,039 WARN L197 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 81 [2021-01-07 05:39:47,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:47,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:47,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:47,136 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:47,137 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 89 [2021-01-07 05:39:47,140 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:47,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:47,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:39:47,191 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:47,192 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 69 [2021-01-07 05:39:47,195 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:47,534 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2021-01-07 05:39:47,535 INFO L625 ElimStorePlain]: treesize reduction 24, result has 92.0 percent of original size [2021-01-07 05:39:47,538 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,541 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,543 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2021-01-07 05:39:47,547 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,547 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,549 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,551 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,552 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,553 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,555 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,556 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,566 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,568 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:47,570 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,571 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,572 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,573 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,576 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,577 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,579 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,584 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:47,587 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,589 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,590 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,592 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:47,601 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,602 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,604 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,605 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:47,617 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,618 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,619 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,623 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,624 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,625 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,626 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,628 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,629 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,631 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,632 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-07 05:39:47,634 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,635 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,637 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,641 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,643 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,644 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,646 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-07 05:39:47,652 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,653 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,655 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,656 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-07 05:39:47,663 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2021-01-07 05:39:47,663 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:265, output treesize:277 [2021-01-07 05:39:47,666 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,667 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,668 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,669 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,669 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,670 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,672 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,673 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,674 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,676 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:47,677 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,678 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,679 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,679 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,681 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,682 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,683 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,684 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:47,694 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,696 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,697 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,698 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:47,704 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,706 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,707 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,708 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:47,714 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:47,715 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,716 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,718 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,719 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,720 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,721 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,723 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,724 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,725 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,726 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-07 05:39:47,728 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,728 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,729 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,732 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,733 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,734 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,735 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-07 05:39:47,741 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:47,742 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,743 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:47,744 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2021-01-07 05:39:47,749 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:47,750 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:47,751 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2021-01-07 05:39:48,127 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:48,129 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:48,129 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:48,131 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:48,133 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:48,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:48,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:48,136 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:48,136 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:48,138 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:48,140 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:48,141 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:48,142 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:48,144 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 05:39:48,145 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:48,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:48,147 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:48,147 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:48,149 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:48,150 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:48,151 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:48,153 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:48,154 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:48,156 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 10 disjuncts [2021-01-07 05:39:48,157 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:48,159 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-07 05:39:48,165 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:48,167 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-07 05:39:48,173 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:48,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2021-01-07 05:39:48,180 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:48,181 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:39:48,183 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2021-01-07 05:39:48,184 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2021-01-07 05:39:48,186 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2021-01-07 05:39:53,109 WARN L197 SmtUtils]: Spent 4.29 s on a formula simplification. DAG size of input: 119 DAG size of output: 64 [2021-01-07 05:39:53,158 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2021-01-07 05:39:53,158 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:53,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:39:53,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:39:53,256 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:53,256 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 132 [2021-01-07 05:39:53,260 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 05:39:53,261 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:39:53,262 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:39:53,262 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:39:53,266 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:53,435 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2021-01-07 05:39:53,436 INFO L625 ElimStorePlain]: treesize reduction 44, result has 73.8 percent of original size [2021-01-07 05:39:53,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:39:53,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:39:53,462 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:53,463 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 48 [2021-01-07 05:39:53,466 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:39:53,468 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:53,524 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:53,531 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:39:53,532 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:183, output treesize:20 [2021-01-07 05:39:53,971 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:39:53,971 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 32 [2021-01-07 05:39:53,973 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:39:53,986 INFO L625 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2021-01-07 05:39:53,987 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:39:53,988 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:11 [2021-01-07 05:39:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:39:54,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:39:54,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30] total 52 [2021-01-07 05:39:54,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053348464] [2021-01-07 05:39:54,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-07 05:39:54,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:39:54,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-07 05:39:54,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2627, Unknown=3, NotChecked=0, Total=2756 [2021-01-07 05:39:54,142 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand 53 states. [2021-01-07 05:39:54,874 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2021-01-07 05:39:55,655 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-01-07 05:39:55,917 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-01-07 05:39:56,165 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:39:56,480 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-01-07 05:39:56,838 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-01-07 05:39:57,265 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 105 [2021-01-07 05:39:57,792 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 130 [2021-01-07 05:39:58,361 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2021-01-07 05:39:58,937 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2021-01-07 05:39:59,545 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 142 [2021-01-07 05:40:00,193 WARN L197 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 146 [2021-01-07 05:40:00,839 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 141 [2021-01-07 05:40:01,736 WARN L197 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 153 [2021-01-07 05:40:02,400 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 144 [2021-01-07 05:40:03,090 WARN L197 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 153 [2021-01-07 05:40:03,951 WARN L197 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 163 [2021-01-07 05:40:04,758 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 149 [2021-01-07 05:40:05,737 WARN L197 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 151 [2021-01-07 05:40:06,591 WARN L197 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 151 [2021-01-07 05:40:11,581 WARN L197 SmtUtils]: Spent 4.62 s on a formula simplification. DAG size of input: 148 DAG size of output: 144 [2021-01-07 05:40:12,698 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 115 [2021-01-07 05:40:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:40:14,522 INFO L93 Difference]: Finished difference Result 209 states and 253 transitions. [2021-01-07 05:40:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-07 05:40:14,523 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 41 [2021-01-07 05:40:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:40:14,524 INFO L225 Difference]: With dead ends: 209 [2021-01-07 05:40:14,524 INFO L226 Difference]: Without dead ends: 209 [2021-01-07 05:40:14,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=774, Invalid=6194, Unknown=4, NotChecked=0, Total=6972 [2021-01-07 05:40:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-01-07 05:40:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 134. [2021-01-07 05:40:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-01-07 05:40:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2021-01-07 05:40:14,531 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 41 [2021-01-07 05:40:14,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:40:14,531 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2021-01-07 05:40:14,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-07 05:40:14,531 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2021-01-07 05:40:14,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-07 05:40:14,532 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:40:14,532 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:40:14,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:40:14,748 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:40:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:40:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash -729604793, now seen corresponding path program 1 times [2021-01-07 05:40:14,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:40:14,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116638115] [2021-01-07 05:40:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:40:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:40:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:40:14,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116638115] [2021-01-07 05:40:14,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606504519] [2021-01-07 05:40:14,859 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:40:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:40:14,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 05:40:14,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:40:14,995 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:15,110 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:15,115 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:15,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:15,143 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:15,144 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 15 treesize of output 19 [2021-01-07 05:40:15,146 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-01-07 05:40:15,160 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:15,161 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 27 treesize of output 23 [2021-01-07 05:40:15,162 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:15,221 INFO L625 ElimStorePlain]: treesize reduction 12, result has 82.4 percent of original size [2021-01-07 05:40:15,240 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:15,240 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 15 treesize of output 19 [2021-01-07 05:40:15,245 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-01-07 05:40:15,263 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:15,263 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 27 treesize of output 23 [2021-01-07 05:40:15,265 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:15,318 INFO L625 ElimStorePlain]: treesize reduction 12, result has 70.7 percent of original size [2021-01-07 05:40:15,326 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:40:15,326 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:83, output treesize:9 [2021-01-07 05:40:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:40:15,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:40:15,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-01-07 05:40:15,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735582859] [2021-01-07 05:40:15,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:40:15,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:40:15,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:40:15,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:40:15,340 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand 10 states. [2021-01-07 05:40:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:40:15,915 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2021-01-07 05:40:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:40:15,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2021-01-07 05:40:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:40:15,917 INFO L225 Difference]: With dead ends: 106 [2021-01-07 05:40:15,917 INFO L226 Difference]: Without dead ends: 106 [2021-01-07 05:40:15,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:40:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-07 05:40:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-01-07 05:40:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-07 05:40:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2021-01-07 05:40:15,921 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 42 [2021-01-07 05:40:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:40:15,921 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2021-01-07 05:40:15,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:40:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2021-01-07 05:40:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-07 05:40:15,922 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:40:15,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:40:16,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:40:16,127 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:40:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:40:16,128 INFO L82 PathProgramCache]: Analyzing trace with hash -104227791, now seen corresponding path program 1 times [2021-01-07 05:40:16,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:40:16,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102070519] [2021-01-07 05:40:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:40:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:40:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:40:17,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102070519] [2021-01-07 05:40:17,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846982847] [2021-01-07 05:40:17,538 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:40:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:40:17,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 66 conjunts are in the unsatisfiable core [2021-01-07 05:40:17,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:40:17,671 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_60|], 1=[|v_#valid_77|]} [2021-01-07 05:40:17,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:17,680 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:40:17,681 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:17,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:17,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:17,701 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-01-07 05:40:17,702 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:17,713 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:17,714 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:40:17,715 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2021-01-07 05:40:17,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:17,846 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:17,847 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 44 [2021-01-07 05:40:17,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:17,885 INFO L625 ElimStorePlain]: treesize reduction 18, result has 57.1 percent of original size [2021-01-07 05:40:17,886 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:40:17,887 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:24 [2021-01-07 05:40:19,463 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:19,468 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 8, 1] term [2021-01-07 05:40:19,469 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:19,485 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 [2021-01-07 05:40:19,486 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:19,572 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:19,580 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 23 treesize of output 11 [2021-01-07 05:40:19,582 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:19,667 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:19,672 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2021-01-07 05:40:19,673 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:123, output treesize:97 [2021-01-07 05:40:20,154 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:20,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:20,194 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:20,195 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-01-07 05:40:20,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:20,197 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:20,199 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:40:20,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:20,228 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:20,229 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-01-07 05:40:20,230 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:20,231 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:20,233 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-01-07 05:40:20,513 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-01-07 05:40:20,514 INFO L625 ElimStorePlain]: treesize reduction 5, result has 96.3 percent of original size [2021-01-07 05:40:20,518 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:20,524 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:20,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:20,528 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2021-01-07 05:40:20,528 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:125, output treesize:105 [2021-01-07 05:40:21,129 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-01-07 05:40:21,136 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:40:21,423 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2021-01-07 05:40:21,446 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:21,451 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 1] term [2021-01-07 05:40:21,452 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:21,461 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_43|], 12=[v_prenex_15]} [2021-01-07 05:40:21,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:21,474 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-01-07 05:40:21,476 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:21,531 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:21,692 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-01-07 05:40:21,693 INFO L348 Elim1Store]: treesize reduction 12, result has 87.9 percent of original size [2021-01-07 05:40:21,694 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 113 [2021-01-07 05:40:21,697 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:21,700 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2021-01-07 05:40:21,700 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-07 05:40:21,701 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:21,830 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-01-07 05:40:21,830 INFO L625 ElimStorePlain]: treesize reduction 20, result has 83.1 percent of original size [2021-01-07 05:40:21,835 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:21,838 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:40:21,838 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:121, output treesize:21 [2021-01-07 05:40:22,057 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 25 treesize of output 13 [2021-01-07 05:40:22,062 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:22,068 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:22,069 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:40:22,069 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:5 [2021-01-07 05:40:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:40:22,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:40:22,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21] total 45 [2021-01-07 05:40:22,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833861746] [2021-01-07 05:40:22,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:40:22,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:40:22,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:40:22,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1928, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:40:22,096 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 46 states. [2021-01-07 05:40:23,501 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-07 05:40:23,927 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-01-07 05:40:24,161 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2021-01-07 05:40:24,425 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-01-07 05:40:24,700 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2021-01-07 05:40:25,010 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-01-07 05:40:25,317 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2021-01-07 05:40:25,695 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2021-01-07 05:40:25,998 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2021-01-07 05:40:26,405 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2021-01-07 05:40:26,843 WARN L197 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2021-01-07 05:40:27,329 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 94 [2021-01-07 05:40:27,885 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 104 [2021-01-07 05:40:28,537 WARN L197 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 108 [2021-01-07 05:40:29,131 WARN L197 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 106 [2021-01-07 05:40:29,679 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 100 [2021-01-07 05:40:30,203 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 92 [2021-01-07 05:40:30,532 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-01-07 05:40:32,846 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-01-07 05:40:33,469 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-01-07 05:40:33,985 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2021-01-07 05:40:34,629 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2021-01-07 05:40:35,347 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2021-01-07 05:40:36,103 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 93 [2021-01-07 05:40:37,019 WARN L197 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 91 [2021-01-07 05:40:37,699 WARN L197 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2021-01-07 05:40:39,275 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-07 05:40:39,774 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2021-01-07 05:40:40,346 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-01-07 05:40:40,926 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2021-01-07 05:40:41,601 WARN L197 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2021-01-07 05:40:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:40:41,657 INFO L93 Difference]: Finished difference Result 196 states and 205 transitions. [2021-01-07 05:40:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-01-07 05:40:41,658 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 47 [2021-01-07 05:40:41,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:40:41,660 INFO L225 Difference]: With dead ends: 196 [2021-01-07 05:40:41,660 INFO L226 Difference]: Without dead ends: 196 [2021-01-07 05:40:41,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1377, Invalid=9129, Unknown=0, NotChecked=0, Total=10506 [2021-01-07 05:40:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-01-07 05:40:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 126. [2021-01-07 05:40:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-01-07 05:40:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 149 transitions. [2021-01-07 05:40:41,668 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 149 transitions. Word has length 47 [2021-01-07 05:40:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:40:41,668 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 149 transitions. [2021-01-07 05:40:41,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:40:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 149 transitions. [2021-01-07 05:40:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-07 05:40:41,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:40:41,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:40:41,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:40:41,884 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:40:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:40:41,885 INFO L82 PathProgramCache]: Analyzing trace with hash -104227790, now seen corresponding path program 1 times [2021-01-07 05:40:41,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:40:41,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765801304] [2021-01-07 05:40:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:40:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:40:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:40:43,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765801304] [2021-01-07 05:40:43,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968378163] [2021-01-07 05:40:43,511 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:40:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:40:43,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 97 conjunts are in the unsatisfiable core [2021-01-07 05:40:43,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:40:43,746 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_62|], 3=[|v_#valid_78|]} [2021-01-07 05:40:43,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:43,753 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:40:43,754 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:43,769 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:43,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:43,778 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-01-07 05:40:43,780 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:43,793 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:43,794 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:40:43,794 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:24 [2021-01-07 05:40:44,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:44,084 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:44,085 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-01-07 05:40:44,086 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:44,088 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:44,090 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:44,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:44,120 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:44,120 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 30 [2021-01-07 05:40:44,122 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:44,158 INFO L625 ElimStorePlain]: treesize reduction 8, result has 76.5 percent of original size [2021-01-07 05:40:44,160 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:40:44,160 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:26 [2021-01-07 05:40:46,460 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-01-07 05:40:46,466 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 9, 1] term [2021-01-07 05:40:46,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:47,353 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-01-07 05:40:47,801 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-01-07 05:40:47,811 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:48,144 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:48,150 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:40:48,155 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 8, 1] term [2021-01-07 05:40:48,155 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:48,166 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_44|, v_prenex_21, |v_#memory_$Pointer$.offset_36|], 12=[v_prenex_19]} [2021-01-07 05:40:48,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:40:48,183 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 48 [2021-01-07 05:40:48,185 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:48,311 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-01-07 05:40:48,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:48,346 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:48,346 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 114 [2021-01-07 05:40:48,349 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2021-01-07 05:40:48,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2021-01-07 05:40:48,352 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-01-07 05:40:48,599 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2021-01-07 05:40:48,601 INFO L625 ElimStorePlain]: treesize reduction 112, result has 64.8 percent of original size [2021-01-07 05:40:48,638 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:48,638 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 79 [2021-01-07 05:40:48,640 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2021-01-07 05:40:48,641 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2021-01-07 05:40:48,643 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-01-07 05:40:48,836 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2021-01-07 05:40:48,837 INFO L625 ElimStorePlain]: treesize reduction 77, result has 72.0 percent of original size [2021-01-07 05:40:48,969 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-01-07 05:40:48,970 INFO L348 Elim1Store]: treesize reduction 16, result has 85.6 percent of original size [2021-01-07 05:40:48,971 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 138 [2021-01-07 05:40:48,974 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:40:48,975 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:40:48,977 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 3, 1] term [2021-01-07 05:40:48,977 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-07 05:40:48,979 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:49,206 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-01-07 05:40:49,206 INFO L625 ElimStorePlain]: treesize reduction 44, result has 82.7 percent of original size [2021-01-07 05:40:49,214 INFO L547 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2021-01-07 05:40:49,214 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 13 variables, input treesize:222, output treesize:142 [2021-01-07 05:40:49,617 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 31 treesize of output 19 [2021-01-07 05:40:49,618 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:49,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:49,648 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-01-07 05:40:49,650 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:40:49,670 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:40:49,672 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:40:49,673 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:64, output treesize:34 [2021-01-07 05:40:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:40:49,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:40:49,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 53 [2021-01-07 05:40:49,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844857747] [2021-01-07 05:40:49,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-07 05:40:49,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:40:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-07 05:40:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2658, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:40:49,987 INFO L87 Difference]: Start difference. First operand 126 states and 149 transitions. Second operand 54 states. [2021-01-07 05:40:50,989 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-07 05:40:51,255 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-01-07 05:40:51,555 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-01-07 05:40:51,853 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-07 05:40:52,256 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2021-01-07 05:40:52,664 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 82 [2021-01-07 05:40:53,148 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2021-01-07 05:40:53,702 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 100 [2021-01-07 05:40:54,282 WARN L197 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 100 [2021-01-07 05:40:54,965 WARN L197 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 106 [2021-01-07 05:40:55,559 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 99 [2021-01-07 05:40:56,174 WARN L197 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 101 [2021-01-07 05:40:56,891 WARN L197 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 106 [2021-01-07 05:40:57,699 WARN L197 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 106 [2021-01-07 05:40:58,497 WARN L197 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 107 [2021-01-07 05:40:59,316 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 111 [2021-01-07 05:41:00,160 WARN L197 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 107 [2021-01-07 05:41:00,890 WARN L197 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 98 [2021-01-07 05:41:01,330 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2021-01-07 05:41:01,676 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2021-01-07 05:41:01,997 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2021-01-07 05:41:02,372 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2021-01-07 05:41:02,900 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2021-01-07 05:41:03,262 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2021-01-07 05:41:03,638 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2021-01-07 05:41:04,121 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-01-07 05:41:04,704 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-01-07 05:41:05,055 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2021-01-07 05:41:05,685 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-01-07 05:41:05,969 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2021-01-07 05:41:06,583 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 72 [2021-01-07 05:41:06,813 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-01-07 05:41:07,476 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 76 [2021-01-07 05:41:07,724 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2021-01-07 05:41:08,528 WARN L197 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 85 [2021-01-07 05:41:08,792 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-01-07 05:41:09,457 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 72 [2021-01-07 05:41:09,813 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-01-07 05:41:10,220 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-01-07 05:41:10,589 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-07 05:41:10,938 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2021-01-07 05:41:11,383 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-01-07 05:41:11,897 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-07 05:41:12,555 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2021-01-07 05:41:13,152 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-01-07 05:41:13,812 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-01-07 05:41:14,687 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2021-01-07 05:41:15,510 WARN L197 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 89 [2021-01-07 05:41:15,915 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-01-07 05:41:16,289 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2021-01-07 05:41:16,648 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2021-01-07 05:41:17,046 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-01-07 05:41:17,395 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2021-01-07 05:41:17,738 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2021-01-07 05:41:18,109 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2021-01-07 05:41:18,625 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-01-07 05:41:18,870 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-01-07 05:41:19,488 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-01-07 05:41:20,125 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-01-07 05:41:20,782 WARN L197 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2021-01-07 05:41:21,544 WARN L197 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2021-01-07 05:41:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:41:21,591 INFO L93 Difference]: Finished difference Result 281 states and 293 transitions. [2021-01-07 05:41:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-01-07 05:41:21,593 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 47 [2021-01-07 05:41:21,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:41:21,595 INFO L225 Difference]: With dead ends: 281 [2021-01-07 05:41:21,595 INFO L226 Difference]: Without dead ends: 281 [2021-01-07 05:41:21,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3205 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=1963, Invalid=12317, Unknown=0, NotChecked=0, Total=14280 [2021-01-07 05:41:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-01-07 05:41:21,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 126. [2021-01-07 05:41:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-01-07 05:41:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2021-01-07 05:41:21,602 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 47 [2021-01-07 05:41:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:41:21,602 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2021-01-07 05:41:21,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2021-01-07 05:41:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2021-01-07 05:41:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-07 05:41:21,603 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:41:21,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:41:21,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-01-07 05:41:21,819 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:41:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:41:21,820 INFO L82 PathProgramCache]: Analyzing trace with hash -104199862, now seen corresponding path program 1 times [2021-01-07 05:41:21,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:41:21,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898875074] [2021-01-07 05:41:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:41:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:41:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:41:21,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898875074] [2021-01-07 05:41:21,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306214651] [2021-01-07 05:41:21,887 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:41:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:41:21,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 05:41:21,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:41:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-07 05:41:22,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:41:22,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-01-07 05:41:22,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001030080] [2021-01-07 05:41:22,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:41:22,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:41:22,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:41:22,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:41:22,085 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand 8 states. [2021-01-07 05:41:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:41:22,114 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2021-01-07 05:41:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:41:22,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2021-01-07 05:41:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:41:22,116 INFO L225 Difference]: With dead ends: 129 [2021-01-07 05:41:22,116 INFO L226 Difference]: Without dead ends: 129 [2021-01-07 05:41:22,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:41:22,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-01-07 05:41:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-01-07 05:41:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-01-07 05:41:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2021-01-07 05:41:22,122 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 47 [2021-01-07 05:41:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:41:22,122 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2021-01-07 05:41:22,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:41:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2021-01-07 05:41:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-07 05:41:22,123 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:41:22,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:41:22,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:41:22,339 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:41:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:41:22,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1175878928, now seen corresponding path program 2 times [2021-01-07 05:41:22,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:41:22,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196574900] [2021-01-07 05:41:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:41:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:41:23,438 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2021-01-07 05:41:23,635 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2021-01-07 05:41:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:41:24,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196574900] [2021-01-07 05:41:24,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261531659] [2021-01-07 05:41:24,208 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:41:24,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:41:24,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:41:24,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 82 conjunts are in the unsatisfiable core [2021-01-07 05:41:24,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:41:24,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:41:24,354 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:41:24,355 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:41:24,371 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:24,372 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:41:24,372 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:20 [2021-01-07 05:41:24,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:41:24,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:41:24,518 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:24,519 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 36 [2021-01-07 05:41:24,521 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:41:24,574 INFO L625 ElimStorePlain]: treesize reduction 14, result has 67.4 percent of original size [2021-01-07 05:41:24,576 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:41:24,576 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:29 [2021-01-07 05:41:26,492 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-01-07 05:41:26,817 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-01-07 05:41:26,825 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:26,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:41:26,866 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:26,867 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-01-07 05:41:26,869 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:41:26,869 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:26,873 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:41:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:41:26,926 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:26,927 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-01-07 05:41:26,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:41:26,930 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:26,933 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2021-01-07 05:41:27,281 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-01-07 05:41:27,282 INFO L625 ElimStorePlain]: treesize reduction 10, result has 94.2 percent of original size [2021-01-07 05:41:27,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:27,285 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:27,287 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:27,288 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:27,291 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2021-01-07 05:41:27,291 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:163, output treesize:135 [2021-01-07 05:41:27,584 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-01-07 05:41:28,127 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-07 05:41:28,134 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:41:28,556 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2021-01-07 05:41:28,574 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 7, 1] term [2021-01-07 05:41:28,575 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:41:28,815 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 7, 1] term [2021-01-07 05:41:28,815 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:28,819 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2021-01-07 05:41:28,819 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:41:28,826 INFO L443 ElimStorePlain]: Different costs {2=[v_prenex_29, |v_#memory_$Pointer$.offset_37|, v_prenex_30], 12=[|v_#memory_$Pointer$.base_45|]} [2021-01-07 05:41:28,837 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 48 [2021-01-07 05:41:28,839 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:41:28,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:28,931 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 63 [2021-01-07 05:41:28,936 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:41:28,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:29,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:41:29,006 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2021-01-07 05:41:29,008 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:41:29,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:29,211 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2021-01-07 05:41:29,212 INFO L348 Elim1Store]: treesize reduction 44, result has 64.2 percent of original size [2021-01-07 05:41:29,213 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 119 [2021-01-07 05:41:29,216 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:41:29,216 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:41:29,219 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:41:29,359 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2021-01-07 05:41:29,360 INFO L625 ElimStorePlain]: treesize reduction 36, result has 79.3 percent of original size [2021-01-07 05:41:29,362 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:41:29,363 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:181, output treesize:115 [2021-01-07 05:41:30,136 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:30,137 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 59 [2021-01-07 05:41:30,139 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:41:30,156 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:30,163 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-01-07 05:41:30,167 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:41:30,177 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:41:30,179 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:41:30,179 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:98, output treesize:10 [2021-01-07 05:41:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:41:30,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:41:30,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25] total 53 [2021-01-07 05:41:30,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652704070] [2021-01-07 05:41:30,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-01-07 05:41:30,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:41:30,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-01-07 05:41:30,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2586, Unknown=0, NotChecked=0, Total=2756 [2021-01-07 05:41:30,323 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand 53 states. [2021-01-07 05:41:32,474 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-01-07 05:41:32,760 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-01-07 05:41:33,084 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2021-01-07 05:41:33,422 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-01-07 05:41:33,835 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2021-01-07 05:41:34,193 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2021-01-07 05:41:34,622 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2021-01-07 05:41:35,161 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 93 [2021-01-07 05:41:35,717 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 91 [2021-01-07 05:41:41,073 WARN L197 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 140 DAG size of output: 96 [2021-01-07 05:41:41,749 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 99 [2021-01-07 05:41:46,675 WARN L197 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 146 DAG size of output: 100 [2021-01-07 05:41:47,290 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 101 [2021-01-07 05:41:47,893 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-01-07 05:41:48,515 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 92 [2021-01-07 05:41:48,916 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-01-07 05:41:49,194 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2021-01-07 05:41:49,447 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-01-07 05:41:49,713 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2021-01-07 05:41:50,015 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2021-01-07 05:41:50,338 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2021-01-07 05:41:50,688 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2021-01-07 05:41:51,073 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2021-01-07 05:41:51,550 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2021-01-07 05:41:53,453 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-01-07 05:41:53,941 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:41:54,339 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-01-07 05:41:54,902 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-01-07 05:41:57,033 WARN L197 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-01-07 05:42:01,777 WARN L197 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2021-01-07 05:42:04,363 WARN L197 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2021-01-07 05:42:04,956 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-01-07 05:42:05,581 WARN L197 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 81 [2021-01-07 05:42:05,939 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-01-07 05:42:06,242 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2021-01-07 05:42:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:42:06,687 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2021-01-07 05:42:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-01-07 05:42:06,689 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 52 [2021-01-07 05:42:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:42:06,691 INFO L225 Difference]: With dead ends: 147 [2021-01-07 05:42:06,691 INFO L226 Difference]: Without dead ends: 147 [2021-01-07 05:42:06,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2386 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=1307, Invalid=10249, Unknown=0, NotChecked=0, Total=11556 [2021-01-07 05:42:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-01-07 05:42:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2021-01-07 05:42:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-01-07 05:42:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-01-07 05:42:06,697 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 52 [2021-01-07 05:42:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:42:06,697 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-01-07 05:42:06,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2021-01-07 05:42:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-01-07 05:42:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-07 05:42:06,698 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:42:06,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:42:06,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:42:06,911 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:42:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:42:06,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2090879357, now seen corresponding path program 1 times [2021-01-07 05:42:06,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:42:06,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416618455] [2021-01-07 05:42:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:42:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:42:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:42:08,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416618455] [2021-01-07 05:42:08,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819115294] [2021-01-07 05:42:08,338 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:42:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:42:08,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 75 conjunts are in the unsatisfiable core [2021-01-07 05:42:08,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:42:10,286 INFO L348 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-01-07 05:42:10,286 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 24 [2021-01-07 05:42:10,288 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:42:10,301 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:42:10,302 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:42:10,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:33 [2021-01-07 05:42:10,702 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 22 treesize of output 10 [2021-01-07 05:42:10,704 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:42:10,711 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:42:10,711 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:42:10,712 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2021-01-07 05:42:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:42:10,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:42:10,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 48 [2021-01-07 05:42:10,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014913110] [2021-01-07 05:42:10,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:42:10,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:42:10,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:42:10,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:42:10,760 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 49 states. [2021-01-07 05:42:12,040 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-01-07 05:42:12,235 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-01-07 05:42:12,467 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-01-07 05:42:12,726 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-01-07 05:42:13,027 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-01-07 05:42:13,397 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-01-07 05:42:13,693 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-01-07 05:42:13,967 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2021-01-07 05:42:14,336 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-01-07 05:42:14,655 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2021-01-07 05:42:15,003 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-01-07 05:42:15,329 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2021-01-07 05:42:15,665 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2021-01-07 05:42:15,977 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2021-01-07 05:42:16,249 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-01-07 05:42:16,489 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-01-07 05:42:16,689 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-01-07 05:42:17,225 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-01-07 05:42:17,450 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2021-01-07 05:42:17,692 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2021-01-07 05:42:18,098 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-01-07 05:42:18,497 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-01-07 05:42:18,726 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2021-01-07 05:42:19,194 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2021-01-07 05:42:19,422 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-01-07 05:42:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:42:19,955 INFO L93 Difference]: Finished difference Result 217 states and 237 transitions. [2021-01-07 05:42:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-01-07 05:42:19,956 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 53 [2021-01-07 05:42:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:42:19,957 INFO L225 Difference]: With dead ends: 217 [2021-01-07 05:42:19,957 INFO L226 Difference]: Without dead ends: 217 [2021-01-07 05:42:19,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1316, Invalid=6516, Unknown=0, NotChecked=0, Total=7832 [2021-01-07 05:42:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-01-07 05:42:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 157. [2021-01-07 05:42:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2021-01-07 05:42:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 187 transitions. [2021-01-07 05:42:19,963 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 187 transitions. Word has length 53 [2021-01-07 05:42:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:42:19,963 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 187 transitions. [2021-01-07 05:42:19,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-07 05:42:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 187 transitions. [2021-01-07 05:42:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-07 05:42:19,964 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:42:19,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:42:20,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:42:20,174 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr42REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr43REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr34REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr32REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr33REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr40REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr41REQUIRES_VIOLATION, ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr38REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr39REQUIRES_VIOLATION]=== [2021-01-07 05:42:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:42:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash 392750760, now seen corresponding path program 1 times [2021-01-07 05:42:20,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:42:20,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714114234] [2021-01-07 05:42:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:42:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:42:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:42:21,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714114234] [2021-01-07 05:42:21,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533852592] [2021-01-07 05:42:21,679 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:42:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:42:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 100 conjunts are in the unsatisfiable core [2021-01-07 05:42:21,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:42:21,907 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_66|], 1=[|v_#valid_80|]} [2021-01-07 05:42:21,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:42:21,914 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:42:21,916 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:42:21,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:42:21,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:42:21,943 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-01-07 05:42:21,945 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:42:21,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:42:21,961 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:42:21,961 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2021-01-07 05:42:22,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:42:22,396 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:42:22,397 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 44 [2021-01-07 05:42:22,399 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:42:22,499 INFO L625 ElimStorePlain]: treesize reduction 18, result has 67.3 percent of original size [2021-01-07 05:42:22,500 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:42:22,500 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:37