/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/array-memsafety/openbsd_cstpncpy-alloca-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:01:23,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:01:23,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:01:23,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:01:23,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:01:23,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:01:23,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:01:23,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:01:23,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:01:23,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:01:23,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:01:23,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:01:23,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:01:23,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:01:23,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:01:23,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:01:23,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:01:23,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:01:23,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:01:23,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:01:23,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:01:23,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:01:23,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:01:23,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:01:23,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:01:23,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:01:23,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:01:23,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:01:23,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:01:23,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:01:23,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:01:23,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:01:23,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:01:23,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:01:23,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:01:23,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:01:23,480 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 05:01:23,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:01:23,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:01:23,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:01:23,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:01:23,536 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:01:23,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:01:23,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:01:23,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:01:23,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:01:23,537 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:01:23,538 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:01:23,538 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:01:23,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:01:23,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:01:23,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:01:23,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:01:23,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:01:23,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:01:23,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:01:23,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:01:23,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:01:23,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:01:23,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:01:23,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:01:23,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:01:24,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:01:24,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:01:24,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:01:24,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:01:24,051 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:01:24,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i [2021-01-07 05:01:24,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ebbf93177/2d169b132d0a483a81de5ecee284b15a/FLAGb5f7d3d5d [2021-01-07 05:01:24,963 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:01:24,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i [2021-01-07 05:01:24,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ebbf93177/2d169b132d0a483a81de5ecee284b15a/FLAGb5f7d3d5d [2021-01-07 05:01:25,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ebbf93177/2d169b132d0a483a81de5ecee284b15a [2021-01-07 05:01:25,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:01:25,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:01:25,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:01:25,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:01:25,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:01:25,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1138a7dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25, skipping insertion in model container [2021-01-07 05:01:25,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:01:25,305 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~dst,] left hand side expression in assignment: address: IdentifierExpression[#t~post3,] left hand side expression in assignment: lhs: VariableLHS[~dst,] left hand side expression in assignment: address: IdentifierExpression[#t~post7,] left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length~0,],IntegerLiteral[1]]]]] [2021-01-07 05:01:25,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:01:25,727 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: IdentifierExpression[~#dst,] left hand side expression in assignment: address: IdentifierExpression[#t~post5,] left hand side expression in assignment: address: IdentifierExpression[~#dst,] left hand side expression in assignment: address: IdentifierExpression[#t~post9,] left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length~0,],IntegerLiteral[1]]]]] [2021-01-07 05:01:25,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:01:25,859 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:01:25,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25 WrapperNode [2021-01-07 05:01:25,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:01:25,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:01:25,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:01:25,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:01:25,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:01:25,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:01:25,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:01:25,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:01:25,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (1/1) ... [2021-01-07 05:01:25,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:01:25,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:01:25,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:01:25,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:01:25,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (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 05:01:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:01:26,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:01:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 05:01:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:01:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 05:01:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:01:26,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:01:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:01:26,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:01:26,695 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-07 05:01:26,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:01:26 BoogieIcfgContainer [2021-01-07 05:01:26,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:01:26,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:01:26,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:01:26,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:01:26,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:01:25" (1/3) ... [2021-01-07 05:01:26,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6135dea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:01:26, skipping insertion in model container [2021-01-07 05:01:26,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:01:25" (2/3) ... [2021-01-07 05:01:26,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6135dea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:01:26, skipping insertion in model container [2021-01-07 05:01:26,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:01:26" (3/3) ... [2021-01-07 05:01:26,708 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstpncpy-alloca-1.i [2021-01-07 05:01:26,716 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:01:26,722 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2021-01-07 05:01:26,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-01-07 05:01:26,772 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:01:26,772 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:01:26,772 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:01:26,773 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:01:26,773 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:01:26,773 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:01:26,773 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:01:26,773 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:01:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2021-01-07 05:01:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:01:26,798 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:26,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:26,799 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:26,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029043, now seen corresponding path program 1 times [2021-01-07 05:01:26,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:26,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580313041] [2021-01-07 05:01:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:27,002 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 05:01:27,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580313041] [2021-01-07 05:01:27,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:27,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:01:27,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011790226] [2021-01-07 05:01:27,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:01:27,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:01:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:01:27,034 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2021-01-07 05:01:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:27,148 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2021-01-07 05:01:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:01:27,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:01:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:27,162 INFO L225 Difference]: With dead ends: 57 [2021-01-07 05:01:27,162 INFO L226 Difference]: Without dead ends: 55 [2021-01-07 05:01:27,164 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 05:01:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-01-07 05:01:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-01-07 05:01:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:01:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-01-07 05:01:27,211 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 7 [2021-01-07 05:01:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:27,211 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-01-07 05:01:27,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:01:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-01-07 05:01:27,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:01:27,214 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:27,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:27,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:01:27,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:27,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029044, now seen corresponding path program 1 times [2021-01-07 05:01:27,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:27,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321877595] [2021-01-07 05:01:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:27,381 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 05:01:27,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321877595] [2021-01-07 05:01:27,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:27,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:01:27,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987377243] [2021-01-07 05:01:27,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:01:27,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:27,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:01:27,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:01:27,390 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 4 states. [2021-01-07 05:01:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:27,491 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-01-07 05:01:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:01:27,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:01:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:27,493 INFO L225 Difference]: With dead ends: 54 [2021-01-07 05:01:27,494 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:01:27,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 05:01:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:01:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-01-07 05:01:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-01-07 05:01:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2021-01-07 05:01:27,502 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 7 [2021-01-07 05:01:27,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:27,503 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2021-01-07 05:01:27,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:01:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2021-01-07 05:01:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:01:27,504 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:27,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:27,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:01:27,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2021-01-07 05:01:27,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:27,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882021838] [2021-01-07 05:01:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:27,562 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 05:01:27,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882021838] [2021-01-07 05:01:27,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:27,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:01:27,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89773403] [2021-01-07 05:01:27,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:01:27,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:27,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:01:27,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:01:27,565 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 4 states. [2021-01-07 05:01:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:27,590 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-01-07 05:01:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:01:27,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:01:27,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:27,593 INFO L225 Difference]: With dead ends: 101 [2021-01-07 05:01:27,593 INFO L226 Difference]: Without dead ends: 101 [2021-01-07 05:01:27,594 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 05:01:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-01-07 05:01:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 57. [2021-01-07 05:01:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:01:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-01-07 05:01:27,611 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 7 [2021-01-07 05:01:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:27,611 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-01-07 05:01:27,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:01:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-01-07 05:01:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:01:27,613 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:27,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:27,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:01:27,613 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:27,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:27,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2021-01-07 05:01:27,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:27,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509102941] [2021-01-07 05:01:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:27,675 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 05:01:27,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509102941] [2021-01-07 05:01:27,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:27,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:01:27,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794743645] [2021-01-07 05:01:27,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:01:27,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:27,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:01:27,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:01:27,678 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2021-01-07 05:01:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:27,843 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2021-01-07 05:01:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:01:27,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-01-07 05:01:27,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:27,846 INFO L225 Difference]: With dead ends: 105 [2021-01-07 05:01:27,846 INFO L226 Difference]: Without dead ends: 105 [2021-01-07 05:01:27,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:01:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-01-07 05:01:27,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 59. [2021-01-07 05:01:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:01:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2021-01-07 05:01:27,859 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 7 [2021-01-07 05:01:27,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:27,862 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2021-01-07 05:01:27,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:01:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2021-01-07 05:01:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:01:27,863 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:27,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:27,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:01:27,864 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:27,865 INFO L82 PathProgramCache]: Analyzing trace with hash -533877068, now seen corresponding path program 1 times [2021-01-07 05:01:27,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:27,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145196785] [2021-01-07 05:01:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:27,920 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 05:01:27,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145196785] [2021-01-07 05:01:27,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:27,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:01:27,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932122580] [2021-01-07 05:01:27,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:01:27,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:27,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:01:27,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:01:27,923 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 3 states. [2021-01-07 05:01:27,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:27,985 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-01-07 05:01:27,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:01:27,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-07 05:01:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:27,989 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:01:27,989 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:01:27,990 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 05:01:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:01:28,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-01-07 05:01:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:01:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-01-07 05:01:28,009 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 9 [2021-01-07 05:01:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:28,009 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-01-07 05:01:28,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:01:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-01-07 05:01:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:01:28,010 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:28,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:28,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:01:28,016 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash -533877067, now seen corresponding path program 1 times [2021-01-07 05:01:28,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:28,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784978962] [2021-01-07 05:01:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:28,108 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 05:01:28,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784978962] [2021-01-07 05:01:28,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:28,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:01:28,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553730406] [2021-01-07 05:01:28,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:01:28,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:28,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:01:28,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:01:28,112 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 3 states. [2021-01-07 05:01:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:28,172 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2021-01-07 05:01:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:01:28,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-01-07 05:01:28,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:28,176 INFO L225 Difference]: With dead ends: 47 [2021-01-07 05:01:28,177 INFO L226 Difference]: Without dead ends: 47 [2021-01-07 05:01:28,177 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 05:01:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-07 05:01:28,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-07 05:01:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:01:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-01-07 05:01:28,189 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 9 [2021-01-07 05:01:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:28,189 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-01-07 05:01:28,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:01:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-01-07 05:01:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:01:28,192 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:28,193 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:28,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:01:28,193 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:28,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:28,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2021-01-07 05:01:28,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:28,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213801117] [2021-01-07 05:01:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:28,291 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 05:01:28,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213801117] [2021-01-07 05:01:28,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955569349] [2021-01-07 05:01:28,292 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 05:01:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:28,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:01:28,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:28,450 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:28,451 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 25 [2021-01-07 05:01:28,456 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:28,477 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2021-01-07 05:01:28,481 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:28,482 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2021-01-07 05:01:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:28,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:28,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:01:28,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738185057] [2021-01-07 05:01:28,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:01:28,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:28,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:01:28,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:01:28,553 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 6 states. [2021-01-07 05:01:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:28,646 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-01-07 05:01:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:01:28,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-07 05:01:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:28,648 INFO L225 Difference]: With dead ends: 50 [2021-01-07 05:01:28,648 INFO L226 Difference]: Without dead ends: 50 [2021-01-07 05:01:28,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:01:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-07 05:01:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2021-01-07 05:01:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-07 05:01:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-01-07 05:01:28,652 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 11 [2021-01-07 05:01:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:28,652 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-01-07 05:01:28,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:01:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-01-07 05:01:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:01:28,653 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:28,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:28,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-07 05:01:28,867 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:28,868 INFO L82 PathProgramCache]: Analyzing trace with hash 229648597, now seen corresponding path program 1 times [2021-01-07 05:01:28,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:28,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344194684] [2021-01-07 05:01:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:28,965 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 05:01:28,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344194684] [2021-01-07 05:01:28,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:28,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:01:28,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012948286] [2021-01-07 05:01:28,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:01:28,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:28,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:01:28,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:01:28,970 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2021-01-07 05:01:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:29,040 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2021-01-07 05:01:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:01:29,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-07 05:01:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:29,042 INFO L225 Difference]: With dead ends: 94 [2021-01-07 05:01:29,042 INFO L226 Difference]: Without dead ends: 94 [2021-01-07 05:01:29,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:01:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-07 05:01:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 56. [2021-01-07 05:01:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-07 05:01:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-01-07 05:01:29,046 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 15 [2021-01-07 05:01:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:29,047 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-01-07 05:01:29,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:01:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-01-07 05:01:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-07 05:01:29,048 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:29,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:29,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:01:29,049 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:29,049 INFO L82 PathProgramCache]: Analyzing trace with hash 487814035, now seen corresponding path program 1 times [2021-01-07 05:01:29,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:29,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693089952] [2021-01-07 05:01:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:29,154 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 05:01:29,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693089952] [2021-01-07 05:01:29,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:29,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:01:29,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384713184] [2021-01-07 05:01:29,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:01:29,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:29,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:01:29,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:01:29,157 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 6 states. [2021-01-07 05:01:29,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:29,212 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-01-07 05:01:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:01:29,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-07 05:01:29,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:29,213 INFO L225 Difference]: With dead ends: 67 [2021-01-07 05:01:29,214 INFO L226 Difference]: Without dead ends: 67 [2021-01-07 05:01:29,214 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 05:01:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-07 05:01:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 44. [2021-01-07 05:01:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-07 05:01:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-01-07 05:01:29,217 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 15 [2021-01-07 05:01:29,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:29,217 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-01-07 05:01:29,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:01:29,218 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-01-07 05:01:29,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:01:29,218 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:29,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:29,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-07 05:01:29,219 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:29,220 INFO L82 PathProgramCache]: Analyzing trace with hash -994678340, now seen corresponding path program 1 times [2021-01-07 05:01:29,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:29,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929155227] [2021-01-07 05:01:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:29,331 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 05:01:29,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929155227] [2021-01-07 05:01:29,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:29,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:01:29,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169798905] [2021-01-07 05:01:29,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:01:29,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:29,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:01:29,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:01:29,333 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 8 states. [2021-01-07 05:01:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:29,464 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-01-07 05:01:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:01:29,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2021-01-07 05:01:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:29,466 INFO L225 Difference]: With dead ends: 43 [2021-01-07 05:01:29,466 INFO L226 Difference]: Without dead ends: 43 [2021-01-07 05:01:29,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:01:29,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-07 05:01:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-01-07 05:01:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-07 05:01:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2021-01-07 05:01:29,469 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2021-01-07 05:01:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:29,469 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2021-01-07 05:01:29,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:01:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2021-01-07 05:01:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:01:29,470 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:29,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:29,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:01:29,471 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:29,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:29,471 INFO L82 PathProgramCache]: Analyzing trace with hash -994678339, now seen corresponding path program 1 times [2021-01-07 05:01:29,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:29,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423301451] [2021-01-07 05:01:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:29,599 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 05:01:29,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423301451] [2021-01-07 05:01:29,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:29,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:01:29,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156996173] [2021-01-07 05:01:29,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:01:29,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:29,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:01:29,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:01:29,602 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2021-01-07 05:01:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:29,959 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2021-01-07 05:01:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:01:29,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2021-01-07 05:01:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:29,960 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:01:29,960 INFO L226 Difference]: Without dead ends: 49 [2021-01-07 05:01:29,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:01:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-07 05:01:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2021-01-07 05:01:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:01:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-01-07 05:01:29,963 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 18 [2021-01-07 05:01:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:29,963 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-01-07 05:01:29,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:01:29,963 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-01-07 05:01:29,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:01:29,964 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:29,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:29,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:01:29,965 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:29,965 INFO L82 PathProgramCache]: Analyzing trace with hash -770257435, now seen corresponding path program 1 times [2021-01-07 05:01:29,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:29,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390776728] [2021-01-07 05:01:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:30,142 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 05:01:30,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390776728] [2021-01-07 05:01:30,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:30,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:01:30,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533600266] [2021-01-07 05:01:30,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:01:30,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:30,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:01:30,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:01:30,144 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 9 states. [2021-01-07 05:01:30,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:30,363 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2021-01-07 05:01:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:01:30,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2021-01-07 05:01:30,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:30,364 INFO L225 Difference]: With dead ends: 48 [2021-01-07 05:01:30,365 INFO L226 Difference]: Without dead ends: 48 [2021-01-07 05:01:30,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:01:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-07 05:01:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2021-01-07 05:01:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-07 05:01:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-01-07 05:01:30,367 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 19 [2021-01-07 05:01:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:30,368 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-01-07 05:01:30,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:01:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-01-07 05:01:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:01:30,368 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:30,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:30,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-07 05:01:30,369 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash -770257436, now seen corresponding path program 1 times [2021-01-07 05:01:30,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:30,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126733034] [2021-01-07 05:01:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:30,462 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 05:01:30,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126733034] [2021-01-07 05:01:30,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:30,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:01:30,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485830939] [2021-01-07 05:01:30,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:01:30,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:30,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:01:30,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:01:30,464 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 8 states. [2021-01-07 05:01:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:30,769 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-01-07 05:01:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:01:30,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-07 05:01:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:30,771 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:01:30,771 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:01:30,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:01:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:01:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2021-01-07 05:01:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:01:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-01-07 05:01:30,780 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 19 [2021-01-07 05:01:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:30,781 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-01-07 05:01:30,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:01:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-01-07 05:01:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:01:30,782 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:30,782 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] [2021-01-07 05:01:30,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:01:30,782 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:30,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1682807689, now seen corresponding path program 1 times [2021-01-07 05:01:30,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:30,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175452109] [2021-01-07 05:01:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:30,883 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 05:01:30,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175452109] [2021-01-07 05:01:30,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:30,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:01:30,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609694206] [2021-01-07 05:01:30,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:01:30,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:30,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:01:30,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:01:30,888 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2021-01-07 05:01:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:30,971 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-01-07 05:01:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:01:30,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2021-01-07 05:01:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:30,972 INFO L225 Difference]: With dead ends: 44 [2021-01-07 05:01:30,972 INFO L226 Difference]: Without dead ends: 44 [2021-01-07 05:01:30,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:01:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-01-07 05:01:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-01-07 05:01:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-07 05:01:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-01-07 05:01:30,976 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 24 [2021-01-07 05:01:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:30,977 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-01-07 05:01:30,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:01:30,977 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-01-07 05:01:30,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:01:30,978 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:30,978 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] [2021-01-07 05:01:30,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:01:30,979 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:30,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:30,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1682807690, now seen corresponding path program 1 times [2021-01-07 05:01:30,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:30,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070836652] [2021-01-07 05:01:30,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:31,081 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 05:01:31,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070836652] [2021-01-07 05:01:31,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:31,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:01:31,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182021635] [2021-01-07 05:01:31,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:01:31,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:31,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:01:31,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:01:31,083 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2021-01-07 05:01:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:31,191 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2021-01-07 05:01:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:01:31,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-01-07 05:01:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:31,193 INFO L225 Difference]: With dead ends: 88 [2021-01-07 05:01:31,193 INFO L226 Difference]: Without dead ends: 88 [2021-01-07 05:01:31,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:01:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-07 05:01:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2021-01-07 05:01:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-07 05:01:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-01-07 05:01:31,201 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 24 [2021-01-07 05:01:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:31,201 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-01-07 05:01:31,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:01:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-01-07 05:01:31,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:01:31,205 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:31,205 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] [2021-01-07 05:01:31,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-07 05:01:31,205 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:31,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:31,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1703829822, now seen corresponding path program 1 times [2021-01-07 05:01:31,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:31,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108001979] [2021-01-07 05:01:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:31,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108001979] [2021-01-07 05:01:31,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:31,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:01:31,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816364388] [2021-01-07 05:01:31,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:01:31,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:01:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:01:31,347 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 6 states. [2021-01-07 05:01:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:31,431 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-01-07 05:01:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:01:31,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-01-07 05:01:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:31,432 INFO L225 Difference]: With dead ends: 75 [2021-01-07 05:01:31,433 INFO L226 Difference]: Without dead ends: 75 [2021-01-07 05:01:31,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:01:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-07 05:01:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2021-01-07 05:01:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-07 05:01:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-01-07 05:01:31,436 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 24 [2021-01-07 05:01:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:31,437 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-01-07 05:01:31,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:01:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-01-07 05:01:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:01:31,438 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:31,438 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] [2021-01-07 05:01:31,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-07 05:01:31,438 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:31,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:31,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2105509516, now seen corresponding path program 1 times [2021-01-07 05:01:31,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:31,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839314056] [2021-01-07 05:01:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:31,923 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 05:01:31,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839314056] [2021-01-07 05:01:31,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:31,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-01-07 05:01:31,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339495925] [2021-01-07 05:01:31,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:01:31,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:31,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:01:31,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:01:31,931 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 14 states. [2021-01-07 05:01:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:32,878 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2021-01-07 05:01:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:01:32,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2021-01-07 05:01:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:32,883 INFO L225 Difference]: With dead ends: 77 [2021-01-07 05:01:32,883 INFO L226 Difference]: Without dead ends: 77 [2021-01-07 05:01:32,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:01:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-07 05:01:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-01-07 05:01:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 05:01:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2021-01-07 05:01:32,890 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 24 [2021-01-07 05:01:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:32,890 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2021-01-07 05:01:32,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:01:32,891 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2021-01-07 05:01:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:01:32,896 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:32,896 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] [2021-01-07 05:01:32,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 05:01:32,896 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:32,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:32,898 INFO L82 PathProgramCache]: Analyzing trace with hash 2126531648, now seen corresponding path program 1 times [2021-01-07 05:01:32,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:32,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145444857] [2021-01-07 05:01:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:33,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145444857] [2021-01-07 05:01:33,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:33,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-01-07 05:01:33,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694788773] [2021-01-07 05:01:33,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:01:33,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:33,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:01:33,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:01:33,122 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 11 states. [2021-01-07 05:01:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:33,463 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-01-07 05:01:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:01:33,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2021-01-07 05:01:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:33,467 INFO L225 Difference]: With dead ends: 120 [2021-01-07 05:01:33,467 INFO L226 Difference]: Without dead ends: 120 [2021-01-07 05:01:33,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:01:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-07 05:01:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 103. [2021-01-07 05:01:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-01-07 05:01:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-01-07 05:01:33,473 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 24 [2021-01-07 05:01:33,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:33,475 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-01-07 05:01:33,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:01:33,475 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-01-07 05:01:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:01:33,476 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:33,476 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] [2021-01-07 05:01:33,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-07 05:01:33,476 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:33,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:33,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1949580930, now seen corresponding path program 1 times [2021-01-07 05:01:33,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:33,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020165298] [2021-01-07 05:01:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:33,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020165298] [2021-01-07 05:01:33,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:33,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-01-07 05:01:33,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672067877] [2021-01-07 05:01:33,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:01:33,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:33,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:01:33,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:01:33,723 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand 12 states. [2021-01-07 05:01:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:34,141 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2021-01-07 05:01:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:01:34,141 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2021-01-07 05:01:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:34,142 INFO L225 Difference]: With dead ends: 156 [2021-01-07 05:01:34,143 INFO L226 Difference]: Without dead ends: 156 [2021-01-07 05:01:34,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:01:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-01-07 05:01:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 105. [2021-01-07 05:01:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-01-07 05:01:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2021-01-07 05:01:34,147 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 24 [2021-01-07 05:01:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:34,147 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2021-01-07 05:01:34,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:01:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2021-01-07 05:01:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-07 05:01:34,148 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:34,148 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] [2021-01-07 05:01:34,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-07 05:01:34,149 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:34,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1664467980, now seen corresponding path program 1 times [2021-01-07 05:01:34,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:34,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578968840] [2021-01-07 05:01:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:34,337 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 05:01:34,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578968840] [2021-01-07 05:01:34,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:01:34,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-07 05:01:34,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161500198] [2021-01-07 05:01:34,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:01:34,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:34,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:01:34,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:01:34,339 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 7 states. [2021-01-07 05:01:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:34,402 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2021-01-07 05:01:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:01:34,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2021-01-07 05:01:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:34,404 INFO L225 Difference]: With dead ends: 104 [2021-01-07 05:01:34,404 INFO L226 Difference]: Without dead ends: 59 [2021-01-07 05:01:34,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:01:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-07 05:01:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-01-07 05:01:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:01:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2021-01-07 05:01:34,406 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 27 [2021-01-07 05:01:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:34,407 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2021-01-07 05:01:34,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:01:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2021-01-07 05:01:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:01:34,407 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:34,408 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] [2021-01-07 05:01:34,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-07 05:01:34,408 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:34,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:34,408 INFO L82 PathProgramCache]: Analyzing trace with hash 235701316, now seen corresponding path program 1 times [2021-01-07 05:01:34,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:34,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007404996] [2021-01-07 05:01:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:34,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007404996] [2021-01-07 05:01:34,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348812545] [2021-01-07 05:01:34,995 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 05:01:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:35,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-07 05:01:35,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:35,161 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_29|], 1=[|v_#valid_38|]} [2021-01-07 05:01:35,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:35,169 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 05:01:35,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:35,203 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:01:35,206 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,223 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:35,229 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,229 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2021-01-07 05:01:35,269 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:35,269 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 05:01:35,275 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,294 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:01:35,295 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,295 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:18 [2021-01-07 05:01:35,336 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:35,349 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 05:01:35,350 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,356 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 05:01:35,357 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:35,384 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 05:01:35,386 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,395 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 05:01:35,396 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,422 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:35,424 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:01:35,424 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:62, output treesize:43 [2021-01-07 05:01:35,571 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:35,574 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:35,576 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:01:35,603 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 17 treesize of output 9 [2021-01-07 05:01:35,606 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,610 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 05:01:35,612 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:35,638 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 05:01:35,640 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,644 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 05:01:35,646 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:35,660 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:35,663 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-07 05:01:35,663 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:71, output treesize:24 [2021-01-07 05:01:35,923 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2021-01-07 05:01:35,923 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:36,174 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2021-01-07 05:01:36,174 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:36,424 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:01:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:36,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:36,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2021-01-07 05:01:36,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795140544] [2021-01-07 05:01:36,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:01:36,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:36,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:01:36,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:01:36,615 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 28 states. [2021-01-07 05:01:37,144 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-07 05:01:37,295 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-07 05:01:37,874 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-01-07 05:01:38,041 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-01-07 05:01:38,231 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-07 05:01:38,517 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-01-07 05:01:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:39,088 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2021-01-07 05:01:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:01:39,089 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2021-01-07 05:01:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:39,089 INFO L225 Difference]: With dead ends: 67 [2021-01-07 05:01:39,089 INFO L226 Difference]: Without dead ends: 67 [2021-01-07 05:01:39,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:01:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-07 05:01:39,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2021-01-07 05:01:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-07 05:01:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2021-01-07 05:01:39,093 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 28 [2021-01-07 05:01:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:39,093 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2021-01-07 05:01:39,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:01:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2021-01-07 05:01:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:01:39,094 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:39,094 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] [2021-01-07 05:01:39,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:39,296 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:39,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1959516773, now seen corresponding path program 1 times [2021-01-07 05:01:39,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:39,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188190092] [2021-01-07 05:01:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:39,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188190092] [2021-01-07 05:01:39,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551558617] [2021-01-07 05:01:39,525 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 05:01:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:39,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-07 05:01:39,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:39,633 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:01:39,633 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 05:01:39,634 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:39,640 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:39,642 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 05:01:39,642 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:14 [2021-01-07 05:01:39,760 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:39,761 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 05:01:39,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:39,765 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:39,772 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:39,777 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 14 treesize of output 16 [2021-01-07 05:01:39,778 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:39,784 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:39,786 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 05:01:39,786 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2021-01-07 05:01:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:40,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:40,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2021-01-07 05:01:40,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526111793] [2021-01-07 05:01:40,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:01:40,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:40,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:01:40,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:01:40,093 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 22 states. [2021-01-07 05:01:40,907 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-01-07 05:01:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:41,265 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2021-01-07 05:01:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:01:41,266 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2021-01-07 05:01:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:41,267 INFO L225 Difference]: With dead ends: 91 [2021-01-07 05:01:41,267 INFO L226 Difference]: Without dead ends: 91 [2021-01-07 05:01:41,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:01:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-07 05:01:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2021-01-07 05:01:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-07 05:01:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2021-01-07 05:01:41,271 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 28 [2021-01-07 05:01:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:41,271 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2021-01-07 05:01:41,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:01:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2021-01-07 05:01:41,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-07 05:01:41,272 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:41,272 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] [2021-01-07 05:01:41,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:01:41,473 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:41,474 INFO L82 PathProgramCache]: Analyzing trace with hash -615477817, now seen corresponding path program 1 times [2021-01-07 05:01:41,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:41,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767862610] [2021-01-07 05:01:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:42,087 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 05:01:42,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767862610] [2021-01-07 05:01:42,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209451876] [2021-01-07 05:01:42,092 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 05:01:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:42,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 56 conjunts are in the unsatisfiable core [2021-01-07 05:01:42,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:42,205 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_32|], 3=[|v_#valid_41|]} [2021-01-07 05:01:42,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:42,212 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 05:01:42,213 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,239 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:01:42,239 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 19 treesize of output 18 [2021-01-07 05:01:42,241 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,255 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,257 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,257 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:26 [2021-01-07 05:01:42,330 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_33|], 3=[|v_#valid_42|]} [2021-01-07 05:01:42,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:42,335 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:01:42,336 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,351 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,368 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,368 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 05:01:42,371 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:01:42,371 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:42,374 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,391 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,392 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,393 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:29 [2021-01-07 05:01:42,457 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 05:01:42,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,478 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,482 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 05:01:42,483 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,504 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,510 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 05:01:42,511 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:45 [2021-01-07 05:01:42,637 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 33 treesize of output 17 [2021-01-07 05:01:42,638 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,661 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:01:42,665 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:42,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:42,682 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:42,683 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:29 [2021-01-07 05:01:43,273 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 05:01:43,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:43,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2021-01-07 05:01:43,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174181879] [2021-01-07 05:01:43,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-01-07 05:01:43,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-01-07 05:01:43,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:01:43,279 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 27 states. [2021-01-07 05:01:43,719 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-01-07 05:01:43,925 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-01-07 05:01:44,216 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-01-07 05:01:44,486 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2021-01-07 05:01:44,772 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2021-01-07 05:01:44,985 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-01-07 05:01:45,151 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-01-07 05:01:45,360 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-01-07 05:01:45,605 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2021-01-07 05:01:45,771 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-01-07 05:01:46,012 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-01-07 05:01:46,262 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:01:46,452 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-01-07 05:01:46,639 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-01-07 05:01:46,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:46,766 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2021-01-07 05:01:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:01:46,767 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 29 [2021-01-07 05:01:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:46,768 INFO L225 Difference]: With dead ends: 69 [2021-01-07 05:01:46,768 INFO L226 Difference]: Without dead ends: 69 [2021-01-07 05:01:46,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=263, Invalid=1543, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:01:46,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-07 05:01:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-01-07 05:01:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-01-07 05:01:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-01-07 05:01:46,775 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 29 [2021-01-07 05:01:46,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:46,775 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-01-07 05:01:46,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-01-07 05:01:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-01-07 05:01:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-07 05:01:46,776 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:46,776 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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 05:01:46,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:46,989 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:46,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1878255100, now seen corresponding path program 2 times [2021-01-07 05:01:46,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:46,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465935042] [2021-01-07 05:01:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:47,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465935042] [2021-01-07 05:01:47,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057186883] [2021-01-07 05:01:47,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:48,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:01:48,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:48,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 72 conjunts are in the unsatisfiable core [2021-01-07 05:01:48,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:48,144 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_34|], 1=[|v_#valid_43|]} [2021-01-07 05:01:48,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:48,148 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 05:01:48,149 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,156 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:48,160 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:01:48,162 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:48,171 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,171 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2021-01-07 05:01:48,188 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:48,189 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 05:01:48,191 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,206 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:01:48,207 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,208 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:18 [2021-01-07 05:01:48,247 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:48,257 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 05:01:48,258 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,265 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 05:01:48,266 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:48,288 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 05:01:48,289 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,294 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 05:01:48,299 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,314 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:48,317 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:01:48,317 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:62, output treesize:43 [2021-01-07 05:01:48,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:48,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:48,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:01:48,435 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 17 treesize of output 9 [2021-01-07 05:01:48,436 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,440 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 05:01:48,443 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,463 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:48,467 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 05:01:48,470 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,474 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 05:01:48,475 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:48,490 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:48,492 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-07 05:01:48,492 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:71, output treesize:24 [2021-01-07 05:01:48,708 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2021-01-07 05:01:48,708 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:48,963 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2021-01-07 05:01:48,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:49,174 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:01:49,407 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-01-07 05:01:49,555 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:01:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:49,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:49,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2021-01-07 05:01:49,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260784423] [2021-01-07 05:01:49,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:01:49,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:49,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:01:49,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=975, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:01:49,776 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 33 states. [2021-01-07 05:01:50,283 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-07 05:01:50,442 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-07 05:01:51,505 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-01-07 05:01:51,953 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-01-07 05:01:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:53,149 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2021-01-07 05:01:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:01:53,150 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 32 [2021-01-07 05:01:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:53,151 INFO L225 Difference]: With dead ends: 85 [2021-01-07 05:01:53,151 INFO L226 Difference]: Without dead ends: 85 [2021-01-07 05:01:53,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:01:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-01-07 05:01:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2021-01-07 05:01:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-07 05:01:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-01-07 05:01:53,156 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 32 [2021-01-07 05:01:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:53,156 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-01-07 05:01:53,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:01:53,156 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-01-07 05:01:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:01:53,157 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:53,157 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] [2021-01-07 05:01:53,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:01:53,371 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:53,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1510311704, now seen corresponding path program 1 times [2021-01-07 05:01:53,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:53,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916523378] [2021-01-07 05:01:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:53,995 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 05:01:53,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916523378] [2021-01-07 05:01:53,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205412623] [2021-01-07 05:01:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:54,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-07 05:01:54,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:54,113 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_36|], 1=[|v_#valid_44|]} [2021-01-07 05:01:54,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:01:54,117 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 05:01:54,118 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,126 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,130 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:01:54,134 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,142 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,145 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,145 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2021-01-07 05:01:54,171 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,176 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 05:01:54,177 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,197 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:01:54,198 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,198 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:18 [2021-01-07 05:01:54,236 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:54,250 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 05:01:54,251 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,257 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 05:01:54,257 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,275 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,281 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 05:01:54,282 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,286 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 05:01:54,288 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,306 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 05:01:54,306 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:62, output treesize:43 [2021-01-07 05:01:54,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:54,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:54,422 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:01:54,435 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 17 treesize of output 9 [2021-01-07 05:01:54,436 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,440 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 05:01:54,442 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,462 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,466 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 05:01:54,467 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,471 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 05:01:54,472 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:54,486 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:54,487 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-07 05:01:54,488 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:71, output treesize:24 [2021-01-07 05:01:54,701 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2021-01-07 05:01:54,701 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:54,944 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2021-01-07 05:01:54,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:55,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:01:55,267 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 05:01:55,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:55,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2021-01-07 05:01:55,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033635603] [2021-01-07 05:01:55,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:01:55,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:55,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:01:55,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:01:55,269 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 29 states. [2021-01-07 05:01:55,966 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2021-01-07 05:01:56,138 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-07 05:01:56,807 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-01-07 05:01:57,343 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2021-01-07 05:01:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:57,857 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2021-01-07 05:01:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 05:01:57,858 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 34 [2021-01-07 05:01:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:57,858 INFO L225 Difference]: With dead ends: 79 [2021-01-07 05:01:57,859 INFO L226 Difference]: Without dead ends: 79 [2021-01-07 05:01:57,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:01:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-07 05:01:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2021-01-07 05:01:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-07 05:01:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-01-07 05:01:57,862 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 34 [2021-01-07 05:01:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:57,863 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-01-07 05:01:57,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:01:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-01-07 05:01:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:01:57,863 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:57,863 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-07 05:01:58,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:58,077 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:01:58,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:58,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1489289572, now seen corresponding path program 2 times [2021-01-07 05:01:58,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:58,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120044139] [2021-01-07 05:01:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:58,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120044139] [2021-01-07 05:01:58,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734952466] [2021-01-07 05:01:58,631 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 05:01:58,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:01:58,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:58,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 52 conjunts are in the unsatisfiable core [2021-01-07 05:01:58,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:58,750 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:01:58,752 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,758 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:58,759 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,759 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2021-01-07 05:01:58,912 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 14 treesize of output 10 [2021-01-07 05:01:58,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:58,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:58,927 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 05:01:58,927 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2021-01-07 05:01:59,002 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,003 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 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:01:59,004 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:59,006 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:01:59,008 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,018 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,019 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 05:01:59,019 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:25 [2021-01-07 05:01:59,073 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_22|], 2=[|v_#memory_int_17|]} [2021-01-07 05:01:59,077 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 05:01:59,078 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,094 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,099 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-01-07 05:01:59,100 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,111 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,114 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:59,115 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:29 [2021-01-07 05:01:59,234 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 16 treesize of output 8 [2021-01-07 05:01:59,235 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,246 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 05:01:59,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:25 [2021-01-07 05:01:59,376 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-01-07 05:01:59,377 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,388 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,390 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 05:01:59,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:21 [2021-01-07 05:01:59,550 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 22 treesize of output 21 [2021-01-07 05:01:59,552 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,567 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:59,567 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:32, output treesize:17 [2021-01-07 05:01:59,716 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:59,717 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 18 treesize of output 18 [2021-01-07 05:01:59,719 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:01:59,743 INFO L625 ElimStorePlain]: treesize reduction 5, result has 66.7 percent of original size [2021-01-07 05:01:59,745 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:59,745 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:3 [2021-01-07 05:01:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:59,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:59,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 33 [2021-01-07 05:01:59,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444246377] [2021-01-07 05:01:59,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:01:59,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:01:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:01:59,760 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 33 states. [2021-01-07 05:02:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:02,139 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2021-01-07 05:02:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:02:02,140 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 34 [2021-01-07 05:02:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:02,142 INFO L225 Difference]: With dead ends: 136 [2021-01-07 05:02:02,142 INFO L226 Difference]: Without dead ends: 136 [2021-01-07 05:02:02,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=289, Invalid=2161, Unknown=0, NotChecked=0, Total=2450 [2021-01-07 05:02:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-01-07 05:02:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 98. [2021-01-07 05:02:02,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2021-01-07 05:02:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2021-01-07 05:02:02,146 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 34 [2021-01-07 05:02:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:02,146 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2021-01-07 05:02:02,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:02:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2021-01-07 05:02:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-07 05:02:02,147 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:02,147 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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 05:02:02,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:02:02,361 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:02:02,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:02,363 INFO L82 PathProgramCache]: Analyzing trace with hash -412898380, now seen corresponding path program 3 times [2021-01-07 05:02:02,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:02,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167643954] [2021-01-07 05:02:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:03,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167643954] [2021-01-07 05:02:03,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839560770] [2021-01-07 05:02:03,216 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 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 05:02:03,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:02:03,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:03,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 79 conjunts are in the unsatisfiable core [2021-01-07 05:02:03,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:03,708 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_38|], 3=[|v_#valid_47|]} [2021-01-07 05:02:03,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:03,712 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 05:02:03,714 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:03,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:03,742 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:02:03,743 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 19 treesize of output 18 [2021-01-07 05:02:03,745 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:03,758 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:03,760 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:03,761 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:23 [2021-01-07 05:02:03,840 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_39|], 3=[|v_#valid_48|]} [2021-01-07 05:02:03,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:03,845 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:02:03,846 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:03,859 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:03,877 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:03,877 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 05:02:03,879 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:03,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:03,881 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:03,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:03,894 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:03,894 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:18 [2021-01-07 05:02:03,946 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 05:02:03,946 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:03,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:03,961 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 05:02:03,962 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:03,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:03,973 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 05:02:03,973 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2021-01-07 05:02:04,095 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 05:02:04,097 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:04,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:04,111 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 15 treesize of output 7 [2021-01-07 05:02:04,112 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:04,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:04,122 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:04,122 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2021-01-07 05:02:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:05,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:05,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 36 [2021-01-07 05:02:05,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622842073] [2021-01-07 05:02:05,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-01-07 05:02:05,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:05,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-01-07 05:02:05,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2021-01-07 05:02:05,027 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 37 states. [2021-01-07 05:02:07,096 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-01-07 05:02:07,271 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-01-07 05:02:07,460 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2021-01-07 05:02:07,707 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2021-01-07 05:02:07,955 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-01-07 05:02:08,408 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-01-07 05:02:08,659 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2021-01-07 05:02:09,358 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-01-07 05:02:09,537 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2021-01-07 05:02:09,735 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-01-07 05:02:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:09,740 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2021-01-07 05:02:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-07 05:02:09,740 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 36 [2021-01-07 05:02:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:09,741 INFO L225 Difference]: With dead ends: 123 [2021-01-07 05:02:09,741 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:02:09,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=501, Invalid=3921, Unknown=0, NotChecked=0, Total=4422 [2021-01-07 05:02:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:02:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2021-01-07 05:02:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:02:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-01-07 05:02:09,745 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2021-01-07 05:02:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:09,746 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-01-07 05:02:09,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-01-07 05:02:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-01-07 05:02:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-07 05:02:09,746 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:09,746 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:09,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:02:09,950 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:02:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:09,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1201741191, now seen corresponding path program 3 times [2021-01-07 05:02:09,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:09,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221390507] [2021-01-07 05:02:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:10,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221390507] [2021-01-07 05:02:10,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872601824] [2021-01-07 05:02:10,258 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 05:02:10,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-07 05:02:10,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:10,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-07 05:02:10,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:10,510 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:10,511 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 05:02:10,513 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:10,514 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:10,516 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:10,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:10,526 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 14 treesize of output 16 [2021-01-07 05:02:10,528 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:10,534 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:10,535 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 05:02:10,536 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2021-01-07 05:02:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:10,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:10,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 25 [2021-01-07 05:02:10,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302727465] [2021-01-07 05:02:10,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-01-07 05:02:10,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:10,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-01-07 05:02:10,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:02:10,934 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 26 states. [2021-01-07 05:02:11,630 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-01-07 05:02:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:12,256 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-01-07 05:02:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:02:12,257 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 38 [2021-01-07 05:02:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:12,258 INFO L225 Difference]: With dead ends: 54 [2021-01-07 05:02:12,258 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:02:12,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2021-01-07 05:02:12,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:02:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2021-01-07 05:02:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-07 05:02:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-01-07 05:02:12,260 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 38 [2021-01-07 05:02:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:12,261 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-01-07 05:02:12,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-01-07 05:02:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-01-07 05:02:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-01-07 05:02:12,261 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:12,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-01-07 05:02:12,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:02:12,466 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:02:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1400728745, now seen corresponding path program 2 times [2021-01-07 05:02:12,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:12,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251998500] [2021-01-07 05:02:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:02:13,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251998500] [2021-01-07 05:02:13,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215680609] [2021-01-07 05:02:13,245 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 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 05:02:13,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:02:13,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:13,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 60 conjunts are in the unsatisfiable core [2021-01-07 05:02:13,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:13,379 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_41|], 3=[|v_#valid_50|]} [2021-01-07 05:02:13,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:13,384 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 05:02:13,385 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,411 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:02:13,412 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 19 treesize of output 18 [2021-01-07 05:02:13,414 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,428 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,428 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:23 [2021-01-07 05:02:13,550 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_42|], 3=[|v_#valid_51|]} [2021-01-07 05:02:13,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:13,556 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:02:13,557 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,573 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,590 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,591 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 05:02:13,592 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:13,593 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:13,595 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,609 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,609 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:18 [2021-01-07 05:02:13,660 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 05:02:13,661 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,672 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,676 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 05:02:13,677 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,688 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 05:02:13,688 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2021-01-07 05:02:13,795 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 05:02:13,796 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,806 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,810 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 15 treesize of output 7 [2021-01-07 05:02:13,811 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:13,819 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:13,820 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:13,820 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2021-01-07 05:02:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:02:14,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:14,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 33 [2021-01-07 05:02:14,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561326755] [2021-01-07 05:02:14,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-01-07 05:02:14,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:14,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-01-07 05:02:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:02:14,630 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 34 states. [2021-01-07 05:02:15,751 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-07 05:02:16,055 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-01-07 05:02:16,391 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-01-07 05:02:16,598 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-01-07 05:02:16,845 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-01-07 05:02:17,025 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-01-07 05:02:17,249 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2021-01-07 05:02:17,676 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2021-01-07 05:02:17,944 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2021-01-07 05:02:18,174 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2021-01-07 05:02:18,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:18,236 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-01-07 05:02:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:02:18,237 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 39 [2021-01-07 05:02:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:18,238 INFO L225 Difference]: With dead ends: 52 [2021-01-07 05:02:18,238 INFO L226 Difference]: Without dead ends: 52 [2021-01-07 05:02:18,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=393, Invalid=2799, Unknown=0, NotChecked=0, Total=3192 [2021-01-07 05:02:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-07 05:02:18,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-01-07 05:02:18,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-07 05:02:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-01-07 05:02:18,241 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 39 [2021-01-07 05:02:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:18,242 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-01-07 05:02:18,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2021-01-07 05:02:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-01-07 05:02:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-07 05:02:18,242 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:18,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1] [2021-01-07 05:02:18,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:02:18,457 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:02:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1093691578, now seen corresponding path program 2 times [2021-01-07 05:02:18,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:18,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153930435] [2021-01-07 05:02:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-07 05:02:19,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153930435] [2021-01-07 05:02:19,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938141072] [2021-01-07 05:02:19,290 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 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 05:02:19,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:02:19,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:19,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 74 conjunts are in the unsatisfiable core [2021-01-07 05:02:19,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:19,469 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_43|], 1=[|v_#valid_52|]} [2021-01-07 05:02:19,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:19,475 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 05:02:19,477 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:19,490 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:19,494 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:02:19,496 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:19,507 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:19,508 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 05:02:19,508 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:21 [2021-01-07 05:02:19,922 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:19,923 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 22 treesize of output 53 [2021-01-07 05:02:19,924 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:19,927 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:19,995 INFO L625 ElimStorePlain]: treesize reduction 20, result has 64.9 percent of original size [2021-01-07 05:02:19,997 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:19,998 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 05:02:19,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:37 [2021-01-07 05:02:20,000 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:20,094 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:20,095 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:20,096 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:02:20,097 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:20,099 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-07 05:02:20,103 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:20,116 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 05:02:20,116 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,126 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 05:02:20,127 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:20,135 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 1 [2021-01-07 05:02:20,136 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,214 INFO L625 ElimStorePlain]: treesize reduction 4, result has 94.9 percent of original size [2021-01-07 05:02:20,222 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 05:02:20,222 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,229 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 05:02:20,230 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:20,266 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2021-01-07 05:02:20,266 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:136, output treesize:61 [2021-01-07 05:02:20,491 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:20,493 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:20,494 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:20,506 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 05:02:20,507 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,512 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 05:02:20,513 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:20,549 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 15 treesize of output 7 [2021-01-07 05:02:20,551 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,555 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 05:02:20,556 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:20,578 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:20,580 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2021-01-07 05:02:20,581 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:89, output treesize:38 [2021-01-07 05:02:20,685 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:20,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:20,944 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2021-01-07 05:02:20,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:21,680 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2021-01-07 05:02:21,680 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:21,683 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2021-01-07 05:02:21,683 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:22,031 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 05:02:22,301 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-01-07 05:02:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:22,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:22,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2021-01-07 05:02:22,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877872832] [2021-01-07 05:02:22,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-01-07 05:02:22,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:22,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-01-07 05:02:22,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1396, Unknown=0, NotChecked=0, Total=1482 [2021-01-07 05:02:22,345 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 39 states. [2021-01-07 05:02:23,725 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-01-07 05:02:24,162 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2021-01-07 05:02:24,551 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2021-01-07 05:02:25,024 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2021-01-07 05:02:25,399 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-01-07 05:02:25,627 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2021-01-07 05:02:26,062 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-01-07 05:02:26,488 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-01-07 05:02:26,806 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-01-07 05:02:27,140 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-01-07 05:02:27,500 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-01-07 05:02:27,836 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-01-07 05:02:28,476 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-01-07 05:02:28,697 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-01-07 05:02:29,065 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-01-07 05:02:29,481 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-01-07 05:02:29,766 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-01-07 05:02:30,186 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-01-07 05:02:30,448 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-07 05:02:30,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:30,984 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2021-01-07 05:02:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-01-07 05:02:30,985 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 44 [2021-01-07 05:02:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:30,986 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:02:30,986 INFO L226 Difference]: Without dead ends: 99 [2021-01-07 05:02:30,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=432, Invalid=6374, Unknown=0, NotChecked=0, Total=6806 [2021-01-07 05:02:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-07 05:02:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 52. [2021-01-07 05:02:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-07 05:02:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-01-07 05:02:30,991 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 44 [2021-01-07 05:02:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:30,991 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-01-07 05:02:30,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2021-01-07 05:02:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-01-07 05:02:30,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-07 05:02:30,992 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:30,992 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:31,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:31,202 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:02:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1072669446, now seen corresponding path program 4 times [2021-01-07 05:02:31,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:31,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155948284] [2021-01-07 05:02:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:31,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155948284] [2021-01-07 05:02:31,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87368575] [2021-01-07 05:02:31,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:02:31,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:02:31,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:31,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 72 conjunts are in the unsatisfiable core [2021-01-07 05:02:31,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:31,972 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:02:31,972 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 19 treesize of output 18 [2021-01-07 05:02:31,974 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:31,981 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:31,982 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:31,982 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:18 [2021-01-07 05:02:32,152 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 14 treesize of output 10 [2021-01-07 05:02:32,153 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:32,166 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:32,168 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 05:02:32,169 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:35 [2021-01-07 05:02:32,245 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_45|], 3=[|v_#valid_54|]} [2021-01-07 05:02:32,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:32,252 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-01-07 05:02:32,253 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:32,274 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:32,294 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:32,295 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 05:02:32,297 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:32,298 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:32,300 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:32,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:32,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:32,322 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:49, output treesize:41 [2021-01-07 05:02:32,408 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_26|], 2=[|v_#memory_int_21|]} [2021-01-07 05:02:32,414 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 05:02:32,415 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:32,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:32,447 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:02:32,448 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:32,469 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:32,472 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:32,473 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:67, output treesize:49 [2021-01-07 05:02:32,674 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 24 treesize of output 12 [2021-01-07 05:02:32,675 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:32,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:32,696 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 05:02:32,697 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:41 [2021-01-07 05:02:32,905 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:02:32,906 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:32,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:32,929 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:32,929 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:41 [2021-01-07 05:02:33,314 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-01-07 05:02:33,315 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:33,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:33,344 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:33,344 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:57, output treesize:46 [2021-01-07 05:02:33,619 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-01-07 05:02:33,620 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:33,643 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:33,648 INFO L547 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:33,648 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:57, output treesize:38 [2021-01-07 05:02:33,938 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:33,938 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-01-07 05:02:33,940 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:02:33,964 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:33,968 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:33,973 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:02:33,976 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 05:02:33,976 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:38 [2021-01-07 05:02:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:34,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:34,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 42 [2021-01-07 05:02:34,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708941825] [2021-01-07 05:02:34,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-01-07 05:02:34,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:34,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-01-07 05:02:34,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1629, Unknown=0, NotChecked=0, Total=1722 [2021-01-07 05:02:34,450 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 42 states. [2021-01-07 05:02:35,666 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2021-01-07 05:02:35,928 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2021-01-07 05:02:36,287 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2021-01-07 05:02:36,717 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2021-01-07 05:02:37,276 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2021-01-07 05:02:37,901 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-01-07 05:02:38,402 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2021-01-07 05:02:39,626 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-01-07 05:02:44,431 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2021-01-07 05:02:44,926 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-01-07 05:02:45,668 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2021-01-07 05:02:45,956 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2021-01-07 05:02:47,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:47,091 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2021-01-07 05:02:47,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:02:47,093 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 44 [2021-01-07 05:02:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:47,093 INFO L225 Difference]: With dead ends: 91 [2021-01-07 05:02:47,094 INFO L226 Difference]: Without dead ends: 65 [2021-01-07 05:02:47,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=582, Invalid=5738, Unknown=0, NotChecked=0, Total=6320 [2021-01-07 05:02:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-07 05:02:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-01-07 05:02:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-07 05:02:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-01-07 05:02:47,098 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 44 [2021-01-07 05:02:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:47,099 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-01-07 05:02:47,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-01-07 05:02:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-01-07 05:02:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-07 05:02:47,099 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:47,100 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:47,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:47,315 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:02:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:47,316 INFO L82 PathProgramCache]: Analyzing trace with hash 337884900, now seen corresponding path program 3 times [2021-01-07 05:02:47,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:47,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306604256] [2021-01-07 05:02:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:02:48,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306604256] [2021-01-07 05:02:48,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947144650] [2021-01-07 05:02:48,423 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 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 05:02:48,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:02:48,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:48,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 80 conjunts are in the unsatisfiable core [2021-01-07 05:02:48,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:48,834 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_46|], 3=[|v_#valid_55|]} [2021-01-07 05:02:48,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:48,840 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 05:02:48,841 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:48,853 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:48,872 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:02:48,872 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 19 treesize of output 18 [2021-01-07 05:02:48,874 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:48,889 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:48,891 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:48,891 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:23 [2021-01-07 05:02:49,023 INFO L443 ElimStorePlain]: Different costs {1=[|v_#length_47|], 3=[|v_#valid_56|]} [2021-01-07 05:02:49,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:02:49,029 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-01-07 05:02:49,031 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:49,047 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,066 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,066 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 05:02:49,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:49,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:49,071 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:49,084 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,086 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:49,087 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:18 [2021-01-07 05:02:49,165 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 05:02:49,166 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:49,182 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,187 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 05:02:49,189 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:49,202 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,203 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 05:02:49,204 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:30 [2021-01-07 05:02:49,353 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 05:02:49,358 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:49,371 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,375 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 15 treesize of output 7 [2021-01-07 05:02:49,376 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:49,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,387 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:49,388 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2021-01-07 05:02:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:02:50,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:50,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 37 [2021-01-07 05:02:50,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100655074] [2021-01-07 05:02:50,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:02:50,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:50,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:02:50,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:02:50,668 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 38 states. [2021-01-07 05:02:51,704 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2021-01-07 05:02:52,125 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-01-07 05:02:52,560 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-01-07 05:02:53,027 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-01-07 05:02:53,639 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-01-07 05:02:54,155 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2021-01-07 05:02:54,406 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2021-01-07 05:02:54,627 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2021-01-07 05:02:54,907 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2021-01-07 05:02:55,077 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-01-07 05:02:55,312 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2021-01-07 05:02:55,514 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2021-01-07 05:02:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:55,516 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2021-01-07 05:02:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-01-07 05:02:55,516 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 54 [2021-01-07 05:02:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:55,517 INFO L225 Difference]: With dead ends: 66 [2021-01-07 05:02:55,517 INFO L226 Difference]: Without dead ends: 58 [2021-01-07 05:02:55,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=465, Invalid=3825, Unknown=0, NotChecked=0, Total=4290 [2021-01-07 05:02:55,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-07 05:02:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2021-01-07 05:02:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-07 05:02:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2021-01-07 05:02:55,522 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 54 [2021-01-07 05:02:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:55,522 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2021-01-07 05:02:55,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:02:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2021-01-07 05:02:55,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-07 05:02:55,523 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:55,523 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:55,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:02:55,731 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:02:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:55,732 INFO L82 PathProgramCache]: Analyzing trace with hash 358907032, now seen corresponding path program 5 times [2021-01-07 05:02:55,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:55,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141975715] [2021-01-07 05:02:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:56,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141975715] [2021-01-07 05:02:56,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346849630] [2021-01-07 05:02:56,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:02:57,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-07 05:02:57,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:57,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 82 conjunts are in the unsatisfiable core [2021-01-07 05:02:57,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:57,164 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:02:57,164 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 19 treesize of output 18 [2021-01-07 05:02:57,166 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:57,178 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:57,179 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:57,180 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:18 [2021-01-07 05:02:57,595 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 14 treesize of output 10 [2021-01-07 05:02:57,596 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:57,614 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:57,615 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 05:02:57,616 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2021-01-07 05:02:57,732 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:57,733 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 05:02:57,735 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:57,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:02:57,748 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:57,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:57,765 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 05:02:57,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:29 [2021-01-07 05:02:57,862 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_28|], 2=[|v_#memory_int_26|]} [2021-01-07 05:02:57,867 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 05:02:57,868 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:57,893 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:57,898 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:02:57,900 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:57,919 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:57,921 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:57,922 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:37 [2021-01-07 05:02:58,146 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 24 treesize of output 12 [2021-01-07 05:02:58,147 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,162 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:58,163 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 05:02:58,164 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:29 [2021-01-07 05:02:58,397 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:02:58,399 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,414 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:58,416 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 05:02:58,416 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:21 [2021-01-07 05:02:58,652 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 22 treesize of output 21 [2021-01-07 05:02:58,653 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,665 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:58,667 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 05:02:58,668 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2021-01-07 05:02:58,821 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:02:58,823 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:58,833 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2021-01-07 05:02:58,937 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 19 treesize of output 18 [2021-01-07 05:02:58,939 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,947 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:58,949 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,949 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2021-01-07 05:02:58,957 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 05:02:58,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,961 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:58,964 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:58,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:02:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:58,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:58,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23] total 43 [2021-01-07 05:02:58,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064942697] [2021-01-07 05:02:58,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:02:58,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:58,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:02:58,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1702, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:02:58,985 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 43 states. [2021-01-07 05:03:00,748 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-01-07 05:03:01,007 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-01-07 05:03:01,296 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2021-01-07 05:03:01,573 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-01-07 05:03:01,825 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-01-07 05:03:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:03,344 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-01-07 05:03:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-01-07 05:03:03,345 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 54 [2021-01-07 05:03:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:03,346 INFO L225 Difference]: With dead ends: 94 [2021-01-07 05:03:03,346 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:03:03,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=343, Invalid=3817, Unknown=0, NotChecked=0, Total=4160 [2021-01-07 05:03:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:03:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2021-01-07 05:03:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:03:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-01-07 05:03:03,351 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2021-01-07 05:03:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:03,351 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-01-07 05:03:03,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:03:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-01-07 05:03:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-07 05:03:03,352 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:03,352 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:03,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:03,555 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:03:03,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:03,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2070188021, now seen corresponding path program 6 times [2021-01-07 05:03:03,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:03,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134369305] [2021-01-07 05:03:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:04,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134369305] [2021-01-07 05:03:04,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297728215] [2021-01-07 05:03:04,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:03:04,461 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:03:04,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:04,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 64 conjunts are in the unsatisfiable core [2021-01-07 05:03:04,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:04,503 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:04,503 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 25 [2021-01-07 05:03:04,505 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:04,544 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2021-01-07 05:03:04,547 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:04,547 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2021-01-07 05:03:04,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:03:04,864 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 05:03:04,865 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:04,879 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:04,891 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:04,892 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 05:03:04,893 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:04,894 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:04,897 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:04,906 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:04,907 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 05:03:04,908 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2021-01-07 05:03:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:05,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:05,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 32 [2021-01-07 05:03:05,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880148187] [2021-01-07 05:03:05,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-01-07 05:03:05,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:05,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-01-07 05:03:05,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:03:05,493 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 33 states. [2021-01-07 05:03:06,538 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-01-07 05:03:06,798 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-01-07 05:03:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:07,333 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-01-07 05:03:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:03:07,334 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 58 [2021-01-07 05:03:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:07,335 INFO L225 Difference]: With dead ends: 67 [2021-01-07 05:03:07,335 INFO L226 Difference]: Without dead ends: 67 [2021-01-07 05:03:07,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2021-01-07 05:03:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-07 05:03:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2021-01-07 05:03:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:03:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-01-07 05:03:07,339 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2021-01-07 05:03:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:07,339 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-01-07 05:03:07,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2021-01-07 05:03:07,339 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-01-07 05:03:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-07 05:03:07,340 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:07,340 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:07,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:03:07,547 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:03:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1595605642, now seen corresponding path program 7 times [2021-01-07 05:03:07,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:07,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725500249] [2021-01-07 05:03:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:08,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725500249] [2021-01-07 05:03:08,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910960469] [2021-01-07 05:03:08,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:08,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 98 conjunts are in the unsatisfiable core [2021-01-07 05:03:08,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:08,996 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:03:08,997 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 19 treesize of output 18 [2021-01-07 05:03:08,999 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:09,010 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:09,011 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:09,012 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:18 [2021-01-07 05:03:09,608 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 14 treesize of output 10 [2021-01-07 05:03:09,610 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:09,628 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:09,630 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 05:03:09,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2021-01-07 05:03:09,765 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:09,766 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 05:03:09,768 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:03:09,768 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:09,775 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:09,793 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:09,795 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 05:03:09,795 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:29 [2021-01-07 05:03:09,927 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_29|], 2=[|v_#memory_int_32|]} [2021-01-07 05:03:09,933 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 05:03:09,935 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:09,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:09,967 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:03:09,969 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:09,992 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:09,995 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:09,995 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:37 [2021-01-07 05:03:10,272 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 24 treesize of output 12 [2021-01-07 05:03:10,274 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:10,290 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:10,292 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 05:03:10,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:29 [2021-01-07 05:03:10,560 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:03:10,562 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:10,578 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:10,580 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 05:03:10,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:21 [2021-01-07 05:03:10,873 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 22 treesize of output 21 [2021-01-07 05:03:10,875 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:10,890 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:10,893 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 05:03:10,893 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2021-01-07 05:03:11,065 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:03:11,066 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,076 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:11,078 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,078 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2021-01-07 05:03:11,192 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:03:11,193 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:11,203 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2021-01-07 05:03:11,317 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 19 treesize of output 18 [2021-01-07 05:03:11,318 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,326 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:11,328 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,328 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2021-01-07 05:03:11,338 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 05:03:11,339 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:11,342 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:11,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:03:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:11,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:11,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 26] total 49 [2021-01-07 05:03:11,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563400400] [2021-01-07 05:03:11,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:03:11,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:11,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:03:11,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2232, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:03:11,364 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 49 states. [2021-01-07 05:03:13,095 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-01-07 05:03:13,573 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-01-07 05:03:13,841 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-01-07 05:03:14,195 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-01-07 05:03:14,510 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-01-07 05:03:14,783 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-01-07 05:03:16,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:16,921 INFO L93 Difference]: Finished difference Result 110 states and 111 transitions. [2021-01-07 05:03:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-07 05:03:16,922 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 64 [2021-01-07 05:03:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:16,923 INFO L225 Difference]: With dead ends: 110 [2021-01-07 05:03:16,923 INFO L226 Difference]: Without dead ends: 72 [2021-01-07 05:03:16,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=385, Invalid=5017, Unknown=0, NotChecked=0, Total=5402 [2021-01-07 05:03:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-07 05:03:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2021-01-07 05:03:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-07 05:03:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-01-07 05:03:16,927 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 64 [2021-01-07 05:03:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:16,928 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-01-07 05:03:16,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-07 05:03:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-01-07 05:03:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-07 05:03:16,929 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:16,929 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:17,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:17,144 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:03:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1757527917, now seen corresponding path program 8 times [2021-01-07 05:03:17,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:17,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675012034] [2021-01-07 05:03:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:17,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675012034] [2021-01-07 05:03:17,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463655533] [2021-01-07 05:03:17,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:17,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:03:17,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:17,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 68 conjunts are in the unsatisfiable core [2021-01-07 05:03:17,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:17,956 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:17,956 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 25 [2021-01-07 05:03:17,958 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:17,998 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2021-01-07 05:03:18,001 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:18,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2021-01-07 05:03:18,391 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:18,392 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 05:03:18,398 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:18,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:18,401 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:18,413 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:18,420 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 05:03:18,422 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:18,431 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:18,432 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 05:03:18,432 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2021-01-07 05:03:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:19,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:19,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 37 [2021-01-07 05:03:19,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832171353] [2021-01-07 05:03:19,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-01-07 05:03:19,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:19,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-01-07 05:03:19,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1286, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:03:19,320 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 38 states. [2021-01-07 05:03:20,389 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-01-07 05:03:20,629 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-01-07 05:03:20,821 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:03:21,007 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-01-07 05:03:21,205 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-07 05:03:21,385 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-07 05:03:21,612 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:03:21,837 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:03:22,058 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:03:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:22,138 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2021-01-07 05:03:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-01-07 05:03:22,139 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 68 [2021-01-07 05:03:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:22,141 INFO L225 Difference]: With dead ends: 77 [2021-01-07 05:03:22,141 INFO L226 Difference]: Without dead ends: 77 [2021-01-07 05:03:22,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=395, Invalid=2055, Unknown=0, NotChecked=0, Total=2450 [2021-01-07 05:03:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-01-07 05:03:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-01-07 05:03:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 05:03:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-01-07 05:03:22,144 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 68 [2021-01-07 05:03:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:22,145 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-01-07 05:03:22,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2021-01-07 05:03:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-01-07 05:03:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-07 05:03:22,145 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:22,146 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:22,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:03:22,353 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:03:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:22,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1529659500, now seen corresponding path program 9 times [2021-01-07 05:03:22,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:22,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156229365] [2021-01-07 05:03:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:23,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156229365] [2021-01-07 05:03:23,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436302325] [2021-01-07 05:03:23,955 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 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 05:03:25,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:03:25,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:25,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 148 conjunts are in the unsatisfiable core [2021-01-07 05:03:25,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:25,332 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-01-07 05:03:25,334 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:25,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:25,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:25,348 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2021-01-07 05:03:26,085 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 14 treesize of output 10 [2021-01-07 05:03:26,086 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:26,108 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:26,110 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 05:03:26,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:32 [2021-01-07 05:03:26,259 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:26,260 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 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 05:03:26,261 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:26,263 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:26,265 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:26,284 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:26,286 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 05:03:26,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:31 [2021-01-07 05:03:26,426 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_30|, |v_#memory_$Pointer$.offset_26|], 2=[|v_#memory_int_39|]} [2021-01-07 05:03:26,433 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 05:03:26,434 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:26,482 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:26,489 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 05:03:26,490 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:26,524 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:26,530 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-01-07 05:03:26,531 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:26,559 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:26,561 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:26,561 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:68, output treesize:39 [2021-01-07 05:03:26,859 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 16 treesize of output 8 [2021-01-07 05:03:26,861 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:26,889 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:26,893 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 15 treesize of output 7 [2021-01-07 05:03:26,900 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:26,917 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:26,919 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 05:03:26,919 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:30 [2021-01-07 05:03:27,210 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-01-07 05:03:27,212 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:27,232 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:27,235 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 05:03:27,235 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:26 [2021-01-07 05:03:27,550 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:03:27,551 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:27,574 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:27,577 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:27,577 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:29 [2021-01-07 05:03:27,920 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:03:27,922 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:27,947 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:27,949 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:27,950 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:29 [2021-01-07 05:03:28,287 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:03:28,289 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:28,314 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:28,316 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:28,317 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:29 [2021-01-07 05:03:28,660 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:03:28,662 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:28,685 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:28,687 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:28,688 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:29 [2021-01-07 05:03:29,048 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 05:03:29,049 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:29,070 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:29,073 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:29,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:29 [2021-01-07 05:03:29,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:03:29,395 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:29,395 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 17 treesize of output 10 [2021-01-07 05:03:29,396 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:29,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:29,405 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:29,405 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2021-01-07 05:03:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:29,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:29,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 29] total 61 [2021-01-07 05:03:29,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498826763] [2021-01-07 05:03:29,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-01-07 05:03:29,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-01-07 05:03:29,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3497, Unknown=0, NotChecked=0, Total=3660 [2021-01-07 05:03:29,446 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 61 states. [2021-01-07 05:03:31,722 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-01-07 05:03:32,254 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-01-07 05:03:32,578 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-01-07 05:03:32,949 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2021-01-07 05:03:33,314 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-07 05:03:33,667 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2021-01-07 05:03:34,075 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-01-07 05:03:34,359 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-07 05:03:34,745 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2021-01-07 05:03:35,137 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-07 05:03:35,471 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-01-07 05:03:35,840 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-07 05:03:36,184 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-01-07 05:03:36,551 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-01-07 05:03:36,854 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-01-07 05:03:37,204 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-01-07 05:03:37,451 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-01-07 05:03:37,691 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-07 05:03:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:37,775 INFO L93 Difference]: Finished difference Result 126 states and 127 transitions. [2021-01-07 05:03:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-07 05:03:37,777 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 74 [2021-01-07 05:03:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:37,777 INFO L225 Difference]: With dead ends: 126 [2021-01-07 05:03:37,778 INFO L226 Difference]: Without dead ends: 82 [2021-01-07 05:03:37,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=489, Invalid=7343, Unknown=0, NotChecked=0, Total=7832 [2021-01-07 05:03:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-07 05:03:37,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2021-01-07 05:03:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-07 05:03:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-01-07 05:03:37,781 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 74 [2021-01-07 05:03:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:37,782 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-01-07 05:03:37,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2021-01-07 05:03:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-01-07 05:03:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-07 05:03:37,783 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:37,783 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:37,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:03:37,992 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:03:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:37,992 INFO L82 PathProgramCache]: Analyzing trace with hash -123927951, now seen corresponding path program 10 times [2021-01-07 05:03:37,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:37,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153434145] [2021-01-07 05:03:37,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 28 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:38,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153434145] [2021-01-07 05:03:38,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421145392] [2021-01-07 05:03:38,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:03:39,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:03:39,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:39,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 77 conjunts are in the unsatisfiable core [2021-01-07 05:03:39,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:39,813 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:03:39,813 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 05:03:39,814 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:39,830 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:39,853 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:39,854 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 25 [2021-01-07 05:03:39,855 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:39,904 INFO L625 ElimStorePlain]: treesize reduction 10, result has 75.6 percent of original size [2021-01-07 05:03:39,906 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:03:39,907 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:22 [2021-01-07 05:03:40,378 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:40,379 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 05:03:40,380 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:03:40,382 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:40,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:40,397 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 05:03:40,399 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:40,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:40,413 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 05:03:40,413 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2021-01-07 05:03:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 45 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:41,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:41,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 40 [2021-01-07 05:03:41,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951942223] [2021-01-07 05:03:41,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:03:41,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:41,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:03:41,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1502, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:03:41,508 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 41 states. [2021-01-07 05:03:42,814 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-01-07 05:03:43,071 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-01-07 05:03:43,279 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:03:43,477 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-01-07 05:03:43,683 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-07 05:03:43,870 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-07 05:03:44,121 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-01-07 05:03:44,368 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:03:44,605 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:03:44,864 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-07 05:03:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:44,957 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2021-01-07 05:03:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:03:44,959 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 78 [2021-01-07 05:03:44,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:44,959 INFO L225 Difference]: With dead ends: 87 [2021-01-07 05:03:44,960 INFO L226 Difference]: Without dead ends: 87 [2021-01-07 05:03:44,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=450, Invalid=2412, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:03:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-07 05:03:44,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-01-07 05:03:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-01-07 05:03:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2021-01-07 05:03:44,962 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 78 [2021-01-07 05:03:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:44,962 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2021-01-07 05:03:44,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:03:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2021-01-07 05:03:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-07 05:03:44,963 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:44,964 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:45,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:03:45,177 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:03:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash 2047124210, now seen corresponding path program 11 times [2021-01-07 05:03:45,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:45,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507052082] [2021-01-07 05:03:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 26 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:47,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507052082] [2021-01-07 05:03:47,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278853411] [2021-01-07 05:03:47,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:04:05,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-07 05:04:05,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:06,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 153 conjunts are in the unsatisfiable core [2021-01-07 05:04:06,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:06,061 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:04:06,062 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 19 treesize of output 18 [2021-01-07 05:04:06,064 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:06,083 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:06,084 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:06,084 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:24 [2021-01-07 05:04:07,157 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 14 treesize of output 10 [2021-01-07 05:04:07,158 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:07,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:07,186 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 05:04:07,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:37 [2021-01-07 05:04:07,362 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:07,363 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 05:04:07,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:04:07,366 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:04:07,368 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:07,392 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:07,394 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 05:04:07,394 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:34 [2021-01-07 05:04:07,558 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_31|, |v_#memory_$Pointer$.offset_27|], 2=[|v_#memory_int_47|]} [2021-01-07 05:04:07,564 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 05:04:07,566 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:07,605 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:07,613 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 05:04:07,616 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:07,650 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:07,655 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:04:07,657 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:07,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:07,687 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:07,688 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:68, output treesize:46 [2021-01-07 05:04:08,020 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 24 treesize of output 12 [2021-01-07 05:04:08,022 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:08,051 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:08,055 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:04:08,057 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:08,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:08,084 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 05:04:08,085 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:60, output treesize:34 [2021-01-07 05:04:08,425 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:04:08,426 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:08,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:08,455 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 05:04:08,456 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:49, output treesize:26 [2021-01-07 05:04:08,999 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:09,001 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:09,025 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:09,028 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:09,029 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:29 [2021-01-07 05:04:09,413 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:09,415 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:09,437 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:09,439 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:09,440 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2021-01-07 05:04:09,802 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:09,804 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:09,827 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:09,830 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 05:04:09,830 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:26 [2021-01-07 05:04:10,237 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:10,239 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:10,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:10,264 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 05:04:10,265 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:26 [2021-01-07 05:04:10,648 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:10,650 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:10,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:10,678 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 05:04:10,678 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:26 [2021-01-07 05:04:11,019 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:11,021 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:11,045 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:11,048 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 05:04:11,048 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:26 [2021-01-07 05:04:11,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-01-07 05:04:11,455 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-01-07 05:04:11,457 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:11,474 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:11,478 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:11,478 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:3 [2021-01-07 05:04:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 26 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:11,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:11,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 33] total 69 [2021-01-07 05:04:11,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728206803] [2021-01-07 05:04:11,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-01-07 05:04:11,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:11,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-01-07 05:04:11,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4501, Unknown=0, NotChecked=0, Total=4692 [2021-01-07 05:04:11,540 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 69 states. [2021-01-07 05:04:13,787 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-01-07 05:04:14,105 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2021-01-07 05:04:14,450 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-01-07 05:04:14,829 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-01-07 05:04:15,252 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2021-01-07 05:04:15,673 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-01-07 05:04:16,080 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2021-01-07 05:04:16,558 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-01-07 05:04:16,938 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-01-07 05:04:17,380 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-01-07 05:04:17,723 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-01-07 05:04:18,071 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2021-01-07 05:04:18,484 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2021-01-07 05:04:19,066 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2021-01-07 05:04:19,650 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2021-01-07 05:04:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:20,490 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2021-01-07 05:04:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-01-07 05:04:20,491 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 84 [2021-01-07 05:04:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:20,492 INFO L225 Difference]: With dead ends: 142 [2021-01-07 05:04:20,492 INFO L226 Difference]: Without dead ends: 92 [2021-01-07 05:04:20,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1747 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=470, Invalid=7902, Unknown=0, NotChecked=0, Total=8372 [2021-01-07 05:04:20,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-07 05:04:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2021-01-07 05:04:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-07 05:04:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-01-07 05:04:20,497 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 84 [2021-01-07 05:04:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:20,497 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-01-07 05:04:20,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2021-01-07 05:04:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-01-07 05:04:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-01-07 05:04:20,498 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:20,498 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:20,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-01-07 05:04:20,713 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:04:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:20,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1064449423, now seen corresponding path program 12 times [2021-01-07 05:04:20,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:20,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835825660] [2021-01-07 05:04:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 45 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:21,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835825660] [2021-01-07 05:04:21,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573052455] [2021-01-07 05:04:21,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:04:31,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-07 05:04:31,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:04:31,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 118 conjunts are in the unsatisfiable core [2021-01-07 05:04:31,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:31,803 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:31,803 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 25 [2021-01-07 05:04:31,805 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:31,855 INFO L625 ElimStorePlain]: treesize reduction 10, result has 76.7 percent of original size [2021-01-07 05:04:31,880 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:04:31,880 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 05:04:31,882 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:31,909 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:31,912 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:31,912 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:25 [2021-01-07 05:04:32,660 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:32,660 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 05:04:32,663 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:32,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:32,686 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 05:04:32,688 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:32,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:32,709 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:32,709 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2021-01-07 05:04:32,812 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 05:04:32,814 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:32,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:32,833 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:32,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2021-01-07 05:04:33,027 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 15 treesize of output 7 [2021-01-07 05:04:33,029 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:33,043 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:33,045 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:33,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:21 [2021-01-07 05:04:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 66 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:34,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:34,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2021-01-07 05:04:34,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334273413] [2021-01-07 05:04:34,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:04:34,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:34,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:04:34,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2193, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:04:34,830 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 49 states. [2021-01-07 05:04:36,913 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2021-01-07 05:04:37,151 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-01-07 05:04:37,421 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-01-07 05:04:37,704 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-01-07 05:04:37,996 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-01-07 05:04:38,281 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-01-07 05:04:38,591 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2021-01-07 05:04:38,886 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2021-01-07 05:04:39,213 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-01-07 05:04:39,503 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-01-07 05:04:39,826 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-01-07 05:04:40,127 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-01-07 05:04:40,453 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-01-07 05:04:40,748 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-01-07 05:04:41,082 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-01-07 05:04:41,376 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-01-07 05:04:41,680 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-01-07 05:04:41,983 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-01-07 05:04:42,245 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-01-07 05:04:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:04:42,582 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2021-01-07 05:04:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:04:42,584 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 88 [2021-01-07 05:04:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:04:42,584 INFO L225 Difference]: With dead ends: 97 [2021-01-07 05:04:42,584 INFO L226 Difference]: Without dead ends: 97 [2021-01-07 05:04:42,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=790, Invalid=4466, Unknown=0, NotChecked=0, Total=5256 [2021-01-07 05:04:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-01-07 05:04:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2021-01-07 05:04:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-07 05:04:42,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2021-01-07 05:04:42,588 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 88 [2021-01-07 05:04:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:04:42,588 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2021-01-07 05:04:42,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-07 05:04:42,588 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2021-01-07 05:04:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-07 05:04:42,589 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:04:42,589 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:04:42,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:04:42,805 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:04:42,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:04:42,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1646098544, now seen corresponding path program 13 times [2021-01-07 05:04:42,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:04:42,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945566975] [2021-01-07 05:04:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:04:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 30 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:45,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945566975] [2021-01-07 05:04:45,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509033951] [2021-01-07 05:04:45,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:04:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:04:45,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 142 conjunts are in the unsatisfiable core [2021-01-07 05:04:45,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:04:45,619 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:04:45,619 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 19 treesize of output 18 [2021-01-07 05:04:45,621 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:45,632 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:45,633 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:45,633 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:18 [2021-01-07 05:04:46,833 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 14 treesize of output 10 [2021-01-07 05:04:46,835 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:46,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:46,856 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 05:04:46,857 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31 [2021-01-07 05:04:47,048 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:47,048 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 05:04:47,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:04:47,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:04:47,053 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:47,071 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:47,072 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 05:04:47,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:29 [2021-01-07 05:04:47,243 INFO L443 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_32|], 2=[|v_#memory_int_56|]} [2021-01-07 05:04:47,249 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 05:04:47,250 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:47,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:47,285 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:04:47,287 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:47,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:47,311 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:04:47,312 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:55, output treesize:37 [2021-01-07 05:04:47,684 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 24 treesize of output 12 [2021-01-07 05:04:47,686 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:47,705 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:47,707 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 05:04:47,707 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:29 [2021-01-07 05:04:48,090 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:04:48,092 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:48,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:48,112 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 05:04:48,113 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:21 [2021-01-07 05:04:48,488 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-01-07 05:04:48,490 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:48,506 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:48,514 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 05:04:48,515 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2021-01-07 05:04:48,755 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:48,757 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:48,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:48,768 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:48,768 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2021-01-07 05:04:48,935 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:48,936 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:48,946 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:48,948 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:48,948 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2021-01-07 05:04:49,119 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:49,120 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,131 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:49,133 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,133 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2021-01-07 05:04:49,298 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:49,299 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,309 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:49,311 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,311 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2021-01-07 05:04:49,480 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 05:04:49,481 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:49,493 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,494 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2021-01-07 05:04:49,658 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 19 treesize of output 18 [2021-01-07 05:04:49,659 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,669 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:49,671 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,671 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2021-01-07 05:04:49,686 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 05:04:49,687 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:04:49,690 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:04:49,691 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:04:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 30 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:04:49,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:04:49,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 35] total 67 [2021-01-07 05:04:49,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38036570] [2021-01-07 05:04:49,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-01-07 05:04:49,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:04:49,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-01-07 05:04:49,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=4254, Unknown=0, NotChecked=0, Total=4422 [2021-01-07 05:04:49,733 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 67 states. [2021-01-07 05:04:53,419 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-01-07 05:04:53,740 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2021-01-07 05:04:54,070 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-01-07 05:04:54,437 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-01-07 05:04:54,837 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2021-01-07 05:04:55,283 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-01-07 05:04:55,649 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-01-07 05:05:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:00,471 INFO L93 Difference]: Finished difference Result 158 states and 159 transitions. [2021-01-07 05:05:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-07 05:05:00,473 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 94 [2021-01-07 05:05:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:00,474 INFO L225 Difference]: With dead ends: 158 [2021-01-07 05:05:00,474 INFO L226 Difference]: Without dead ends: 102 [2021-01-07 05:05:00,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=511, Invalid=9589, Unknown=0, NotChecked=0, Total=10100 [2021-01-07 05:05:00,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-07 05:05:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2021-01-07 05:05:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-07 05:05:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2021-01-07 05:05:00,478 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2021-01-07 05:05:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:00,478 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2021-01-07 05:05:00,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2021-01-07 05:05:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2021-01-07 05:05:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-01-07 05:05:00,479 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:00,479 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:00,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:00,694 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:05:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash -45925907, now seen corresponding path program 14 times [2021-01-07 05:05:00,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:00,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620064714] [2021-01-07 05:05:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 66 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:01,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620064714] [2021-01-07 05:05:01,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359406052] [2021-01-07 05:05:01,816 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:05:01,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:05:01,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:05:01,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 93 conjunts are in the unsatisfiable core [2021-01-07 05:05:01,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:05:02,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:05:02,641 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 14 treesize of output 16 [2021-01-07 05:05:02,643 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:02,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:02,674 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:02,675 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 05:05:02,677 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:02,678 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:05:02,681 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:05:02,693 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:05:02,694 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 05:05:02,695 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2021-01-07 05:05:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 91 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:04,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:05:04,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 49 [2021-01-07 05:05:04,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334597118] [2021-01-07 05:05:04,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-07 05:05:04,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:05:04,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-07 05:05:04,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2251, Unknown=0, NotChecked=0, Total=2450 [2021-01-07 05:05:04,453 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 50 states. [2021-01-07 05:05:06,429 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2021-01-07 05:05:06,707 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2021-01-07 05:05:06,917 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-01-07 05:05:07,120 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2021-01-07 05:05:07,344 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-07 05:05:07,542 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-07 05:05:07,827 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-01-07 05:05:08,117 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-07 05:05:08,389 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-01-07 05:05:08,662 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2021-01-07 05:05:08,951 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-07 05:05:09,226 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-07 05:05:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:05:09,353 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-01-07 05:05:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-07 05:05:09,355 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2021-01-07 05:05:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:05:09,355 INFO L225 Difference]: With dead ends: 107 [2021-01-07 05:05:09,355 INFO L226 Difference]: Without dead ends: 107 [2021-01-07 05:05:09,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=636, Invalid=3524, Unknown=0, NotChecked=0, Total=4160 [2021-01-07 05:05:09,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-07 05:05:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-01-07 05:05:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-01-07 05:05:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2021-01-07 05:05:09,359 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 98 [2021-01-07 05:05:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:05:09,359 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2021-01-07 05:05:09,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2021-01-07 05:05:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2021-01-07 05:05:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-01-07 05:05:09,360 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:05:09,360 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:05:09,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-01-07 05:05:09,574 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-01-07 05:05:09,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:05:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash 6966638, now seen corresponding path program 15 times [2021-01-07 05:05:09,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:05:09,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329091673] [2021-01-07 05:05:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:05:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:05:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 34 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:05:12,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329091673] [2021-01-07 05:05:12,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282929353] [2021-01-07 05:05:12,920 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true