/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/cstrncpy-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:48:55,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:48:55,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:48:55,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:48:55,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:48:55,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:48:55,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:48:55,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:48:55,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:48:55,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:48:55,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:48:55,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:48:55,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:48:55,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:48:55,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:48:55,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:48:55,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:48:55,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:48:55,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:48:55,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:48:55,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:48:55,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:48:55,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:48:55,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:48:55,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:48:55,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:48:55,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:48:55,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:48:55,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:48:55,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:48:55,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:48:55,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:48:55,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:48:55,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:48:55,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:48:55,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:48:55,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:48:55,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:48:55,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:48:55,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:48:55,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:48:55,510 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:48:55,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:48:55,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:48:55,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:48:55,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:48:55,511 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:48:55,512 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:48:55,512 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:48:55,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:48:55,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:48:55,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:48:55,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:48:55,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:48:55,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:48:55,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:48:55,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:48:55,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:48:55,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:48:55,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:48:55,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:48:55,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:48:55,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:48:55,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:48:55,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:48:55,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:48:55,979 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:48:55,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncpy-alloca-2.i [2020-12-23 16:48:56,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/252283b30/6d30aecf1790470086d40a9945fcf4bc/FLAG27e1e4a44 [2020-12-23 16:48:56,874 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:48:56,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncpy-alloca-2.i [2020-12-23 16:48:56,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/252283b30/6d30aecf1790470086d40a9945fcf4bc/FLAG27e1e4a44 [2020-12-23 16:48:57,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/252283b30/6d30aecf1790470086d40a9945fcf4bc [2020-12-23 16:48:57,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:48:57,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:48:57,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:48:57,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:48:57,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:48:57,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd24b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57, skipping insertion in model container [2020-12-23 16:48:57,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:48:57,231 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: IdentifierExpression[#t~post3,] left hand side expression in assignment: lhs: VariableLHS[~us~0,] left hand side expression in assignment: lhs: VariableLHS[~n2~0,] 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]]]]] [2020-12-23 16:48:57,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:48:57,582 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: IdentifierExpression[#t~post3,] left hand side expression in assignment: lhs: VariableLHS[~us~0,] left hand side expression in assignment: lhs: VariableLHS[~n2~0,] 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]]]]] [2020-12-23 16:48:57,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:48:57,729 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:48:57,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57 WrapperNode [2020-12-23 16:48:57,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:48:57,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:48:57,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:48:57,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:48:57,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:48:57,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:48:57,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:48:57,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:48:57,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... [2020-12-23 16:48:57,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:48:57,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:48:57,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:48:57,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:48:57,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:48:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:48:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:48:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:48:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:48:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:48:58,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:48:58,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:48:58,587 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 16:48:58,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:58 BoogieIcfgContainer [2020-12-23 16:48:58,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:48:58,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:48:58,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:48:58,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:48:58,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:48:57" (1/3) ... [2020-12-23 16:48:58,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8a142d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:48:58, skipping insertion in model container [2020-12-23 16:48:58,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:48:57" (2/3) ... [2020-12-23 16:48:58,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8a142d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:48:58, skipping insertion in model container [2020-12-23 16:48:58,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:48:58" (3/3) ... [2020-12-23 16:48:58,606 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy-alloca-2.i [2020-12-23 16:48:58,614 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:48:58,622 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 16:48:58,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 16:48:58,688 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:48:58,688 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:48:58,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:48:58,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:48:58,689 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:48:58,689 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:48:58,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:48:58,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:48:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-12-23 16:48:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:58,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:58,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:58,722 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:48:58,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:58,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029043, now seen corresponding path program 1 times [2020-12-23 16:48:58,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:58,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747662725] [2020-12-23 16:48:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747662725] [2020-12-23 16:48:59,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:48:59,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864660737] [2020-12-23 16:48:59,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:48:59,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:48:59,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:48:59,050 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-12-23 16:48:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,153 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-12-23 16:48:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:48:59,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 16:48:59,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,165 INFO L225 Difference]: With dead ends: 33 [2020-12-23 16:48:59,165 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 16:48:59,167 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 [2020-12-23 16:48:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 16:48:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-23 16:48:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 16:48:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-12-23 16:48:59,206 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 7 [2020-12-23 16:48:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,207 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-12-23 16:48:59,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:48:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-12-23 16:48:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:59,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:48:59,208 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029044, now seen corresponding path program 1 times [2020-12-23 16:48:59,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499882937] [2020-12-23 16:48:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499882937] [2020-12-23 16:48:59,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:48:59,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951059659] [2020-12-23 16:48:59,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:59,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:59,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:59,320 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2020-12-23 16:48:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,399 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-12-23 16:48:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:59,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 16:48:59,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,401 INFO L225 Difference]: With dead ends: 30 [2020-12-23 16:48:59,401 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 16:48:59,402 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 [2020-12-23 16:48:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 16:48:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-23 16:48:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 16:48:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-12-23 16:48:59,407 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2020-12-23 16:48:59,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,408 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-12-23 16:48:59,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:59,408 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-12-23 16:48:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:59,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:48:59,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2020-12-23 16:48:59,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645289793] [2020-12-23 16:48:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645289793] [2020-12-23 16:48:59,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:48:59,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846838284] [2020-12-23 16:48:59,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:48:59,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:48:59,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:59,518 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-12-23 16:48:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,570 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-12-23 16:48:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:59,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 16:48:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,576 INFO L225 Difference]: With dead ends: 53 [2020-12-23 16:48:59,576 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 16:48:59,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:48:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 16:48:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2020-12-23 16:48:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 16:48:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-12-23 16:48:59,589 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 7 [2020-12-23 16:48:59,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,590 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-12-23 16:48:59,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:48:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-12-23 16:48:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:48:59,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:48:59,594 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2020-12-23 16:48:59,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557034601] [2020-12-23 16:48:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557034601] [2020-12-23 16:48:59,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:48:59,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228327725] [2020-12-23 16:48:59,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:48:59,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:48:59,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:48:59,718 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 5 states. [2020-12-23 16:48:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:48:59,795 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-12-23 16:48:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:48:59,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-23 16:48:59,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:48:59,797 INFO L225 Difference]: With dead ends: 57 [2020-12-23 16:48:59,797 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 16:48:59,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:48:59,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 16:48:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 35. [2020-12-23 16:48:59,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 16:48:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-12-23 16:48:59,804 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 7 [2020-12-23 16:48:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:48:59,805 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-12-23 16:48:59,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:48:59,805 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-12-23 16:48:59,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 16:48:59,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:48:59,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:48:59,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:48:59,807 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:48:59,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:48:59,807 INFO L82 PathProgramCache]: Analyzing trace with hash 629680341, now seen corresponding path program 1 times [2020-12-23 16:48:59,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:48:59,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104522118] [2020-12-23 16:48:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:48:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:48:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:48:59,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104522118] [2020-12-23 16:48:59,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:48:59,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 16:48:59,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677015545] [2020-12-23 16:48:59,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:48:59,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:48:59,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:48:59,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:48:59,913 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 7 states. [2020-12-23 16:49:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:00,067 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2020-12-23 16:49:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:49:00,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-23 16:49:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:00,069 INFO L225 Difference]: With dead ends: 46 [2020-12-23 16:49:00,069 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 16:49:00,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:49:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 16:49:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-12-23 16:49:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 16:49:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2020-12-23 16:49:00,075 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 10 [2020-12-23 16:49:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:00,076 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2020-12-23 16:49:00,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:49:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2020-12-23 16:49:00,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 16:49:00,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:00,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:00,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:49:00,078 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash 629680340, now seen corresponding path program 1 times [2020-12-23 16:49:00,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:00,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718544174] [2020-12-23 16:49:00,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718544174] [2020-12-23 16:49:00,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:00,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:49:00,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680327579] [2020-12-23 16:49:00,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:49:00,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:00,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:49:00,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:00,128 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 5 states. [2020-12-23 16:49:00,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:00,192 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-12-23 16:49:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:00,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 16:49:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:00,193 INFO L225 Difference]: With dead ends: 36 [2020-12-23 16:49:00,193 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 16:49:00,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:49:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 16:49:00,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-23 16:49:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 16:49:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-12-23 16:49:00,198 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 10 [2020-12-23 16:49:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:00,198 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-12-23 16:49:00,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:49:00,199 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-12-23 16:49:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:49:00,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:00,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:00,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:49:00,200 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:00,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1954745921, now seen corresponding path program 1 times [2020-12-23 16:49:00,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:00,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710498832] [2020-12-23 16:49:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710498832] [2020-12-23 16:49:00,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:00,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:49:00,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687676859] [2020-12-23 16:49:00,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:49:00,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:00,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:49:00,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:00,306 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-12-23 16:49:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:00,371 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-12-23 16:49:00,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:00,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 16:49:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:00,373 INFO L225 Difference]: With dead ends: 35 [2020-12-23 16:49:00,373 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 16:49:00,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:49:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 16:49:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-23 16:49:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 16:49:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-12-23 16:49:00,378 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 11 [2020-12-23 16:49:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:00,378 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-12-23 16:49:00,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:49:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-12-23 16:49:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:49:00,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:00,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:00,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 16:49:00,380 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:00,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1954745920, now seen corresponding path program 1 times [2020-12-23 16:49:00,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:00,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558121138] [2020-12-23 16:49:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558121138] [2020-12-23 16:49:00,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:00,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:49:00,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799474529] [2020-12-23 16:49:00,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:49:00,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:00,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:49:00,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:00,496 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 6 states. [2020-12-23 16:49:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:00,612 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2020-12-23 16:49:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:49:00,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 16:49:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:00,613 INFO L225 Difference]: With dead ends: 41 [2020-12-23 16:49:00,614 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 16:49:00,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:49:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 16:49:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-12-23 16:49:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 16:49:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-12-23 16:49:00,618 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 11 [2020-12-23 16:49:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:00,619 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-12-23 16:49:00,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:49:00,619 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-12-23 16:49:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:49:00,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:00,620 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:00,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 16:49:00,620 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2020-12-23 16:49:00,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:00,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255382897] [2020-12-23 16:49:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255382897] [2020-12-23 16:49:00,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585269974] [2020-12-23 16:49:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:00,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 16:49:00,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:00,845 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:00,845 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 [2020-12-23 16:49:00,855 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:00,879 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:49:00,899 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:00,900 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:49:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:00,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:00,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 16:49:00,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199396567] [2020-12-23 16:49:00,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:49:00,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:00,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:49:00,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:00,951 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-12-23 16:49:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,039 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-12-23 16:49:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:49:01,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 16:49:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,040 INFO L225 Difference]: With dead ends: 58 [2020-12-23 16:49:01,040 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 16:49:01,041 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 [2020-12-23 16:49:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 16:49:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2020-12-23 16:49:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 16:49:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-12-23 16:49:01,045 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 11 [2020-12-23 16:49:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,045 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-12-23 16:49:01,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:49:01,046 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-12-23 16:49:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:49:01,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 16:49:01,262 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,264 INFO L82 PathProgramCache]: Analyzing trace with hash -467610218, now seen corresponding path program 1 times [2020-12-23 16:49:01,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168007767] [2020-12-23 16:49:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168007767] [2020-12-23 16:49:01,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:01,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:49:01,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309478616] [2020-12-23 16:49:01,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:01,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:01,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:01,317 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2020-12-23 16:49:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,338 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-12-23 16:49:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:01,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 16:49:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,340 INFO L225 Difference]: With dead ends: 33 [2020-12-23 16:49:01,340 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 16:49:01,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 16:49:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-23 16:49:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 16:49:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-12-23 16:49:01,344 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 12 [2020-12-23 16:49:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,344 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-12-23 16:49:01,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-12-23 16:49:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 16:49:01,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,346 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 16:49:01,346 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1625875758, now seen corresponding path program 1 times [2020-12-23 16:49:01,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626301857] [2020-12-23 16:49:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626301857] [2020-12-23 16:49:01,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:01,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:49:01,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463954820] [2020-12-23 16:49:01,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:49:01,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:01,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:49:01,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:49:01,390 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 5 states. [2020-12-23 16:49:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,420 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-12-23 16:49:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:49:01,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 16:49:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,422 INFO L225 Difference]: With dead ends: 61 [2020-12-23 16:49:01,422 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 16:49:01,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:49:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 16:49:01,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2020-12-23 16:49:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 16:49:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-12-23 16:49:01,426 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 14 [2020-12-23 16:49:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,426 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-12-23 16:49:01,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:49:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-12-23 16:49:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 16:49:01,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,427 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 16:49:01,428 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1968026960, now seen corresponding path program 1 times [2020-12-23 16:49:01,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446978530] [2020-12-23 16:49:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446978530] [2020-12-23 16:49:01,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:01,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 16:49:01,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741308258] [2020-12-23 16:49:01,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:49:01,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:01,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:49:01,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:49:01,528 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 8 states. [2020-12-23 16:49:01,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:01,651 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-12-23 16:49:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 16:49:01,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-23 16:49:01,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:01,653 INFO L225 Difference]: With dead ends: 69 [2020-12-23 16:49:01,653 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 16:49:01,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:49:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 16:49:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2020-12-23 16:49:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 16:49:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-12-23 16:49:01,661 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2020-12-23 16:49:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:01,661 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-12-23 16:49:01,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:49:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-12-23 16:49:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 16:49:01,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:01,666 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:01,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 16:49:01,666 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:01,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1709861522, now seen corresponding path program 1 times [2020-12-23 16:49:01,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:01,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871631887] [2020-12-23 16:49:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:01,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871631887] [2020-12-23 16:49:01,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:01,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:49:01,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814890415] [2020-12-23 16:49:01,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:49:01,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:01,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:49:01,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:49:01,866 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 9 states. [2020-12-23 16:49:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,023 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-12-23 16:49:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:49:02,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-23 16:49:02,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,026 INFO L225 Difference]: With dead ends: 81 [2020-12-23 16:49:02,026 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 16:49:02,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-12-23 16:49:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 16:49:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 53. [2020-12-23 16:49:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 16:49:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-12-23 16:49:02,031 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 14 [2020-12-23 16:49:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,031 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-12-23 16:49:02,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:49:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-12-23 16:49:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:49:02,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 16:49:02,033 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1138011067, now seen corresponding path program 1 times [2020-12-23 16:49:02,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11006373] [2020-12-23 16:49:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11006373] [2020-12-23 16:49:02,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:49:02,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250392397] [2020-12-23 16:49:02,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:49:02,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:49:02,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:49:02,075 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 6 states. [2020-12-23 16:49:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,166 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-12-23 16:49:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:49:02,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 16:49:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,168 INFO L225 Difference]: With dead ends: 54 [2020-12-23 16:49:02,168 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 16:49:02,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:49:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 16:49:02,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-12-23 16:49:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 16:49:02,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-12-23 16:49:02,172 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 15 [2020-12-23 16:49:02,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,172 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-12-23 16:49:02,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:49:02,172 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-12-23 16:49:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:49:02,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 16:49:02,174 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1138011066, now seen corresponding path program 1 times [2020-12-23 16:49:02,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538611252] [2020-12-23 16:49:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538611252] [2020-12-23 16:49:02,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 16:49:02,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111528749] [2020-12-23 16:49:02,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:49:02,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:49:02,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:49:02,265 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 7 states. [2020-12-23 16:49:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,364 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-23 16:49:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:49:02,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-23 16:49:02,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,365 INFO L225 Difference]: With dead ends: 66 [2020-12-23 16:49:02,365 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 16:49:02,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-23 16:49:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 16:49:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-23 16:49:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 16:49:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-12-23 16:49:02,369 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 15 [2020-12-23 16:49:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,369 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-12-23 16:49:02,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:49:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-12-23 16:49:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 16:49:02,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 16:49:02,371 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,371 INFO L82 PathProgramCache]: Analyzing trace with hash -879845628, now seen corresponding path program 1 times [2020-12-23 16:49:02,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067555207] [2020-12-23 16:49:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067555207] [2020-12-23 16:49:02,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:49:02,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502418849] [2020-12-23 16:49:02,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:49:02,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:49:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:49:02,526 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 10 states. [2020-12-23 16:49:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,879 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-12-23 16:49:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:49:02,879 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-12-23 16:49:02,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,880 INFO L225 Difference]: With dead ends: 67 [2020-12-23 16:49:02,880 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 16:49:02,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-23 16:49:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 16:49:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-12-23 16:49:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 16:49:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-12-23 16:49:02,885 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 15 [2020-12-23 16:49:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,885 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-12-23 16:49:02,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:49:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-12-23 16:49:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 16:49:02,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 16:49:02,887 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1587978612, now seen corresponding path program 1 times [2020-12-23 16:49:02,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759163351] [2020-12-23 16:49:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:02,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759163351] [2020-12-23 16:49:02,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:49:02,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:49:02,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106416251] [2020-12-23 16:49:02,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:49:02,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:02,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:49:02,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:02,935 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 4 states. [2020-12-23 16:49:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:02,967 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-12-23 16:49:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:49:02,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 16:49:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:02,969 INFO L225 Difference]: With dead ends: 64 [2020-12-23 16:49:02,969 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 16:49:02,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:49:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 16:49:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-23 16:49:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 16:49:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-12-23 16:49:02,975 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 17 [2020-12-23 16:49:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:02,975 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-12-23 16:49:02,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:49:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-12-23 16:49:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 16:49:02,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:02,979 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:02,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 16:49:02,980 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:02,980 INFO L82 PathProgramCache]: Analyzing trace with hash 980027851, now seen corresponding path program 1 times [2020-12-23 16:49:02,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:02,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514995790] [2020-12-23 16:49:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:03,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514995790] [2020-12-23 16:49:03,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487855656] [2020-12-23 16:49:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:03,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 16:49:03,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:03,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:03,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-12-23 16:49:03,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284233617] [2020-12-23 16:49:03,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 16:49:03,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:03,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 16:49:03,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:49:03,372 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 15 states. [2020-12-23 16:49:03,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:03,754 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-12-23 16:49:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:49:03,755 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-12-23 16:49:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:03,756 INFO L225 Difference]: With dead ends: 63 [2020-12-23 16:49:03,757 INFO L226 Difference]: Without dead ends: 63 [2020-12-23 16:49:03,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-12-23 16:49:03,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-23 16:49:03,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-12-23 16:49:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 16:49:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-12-23 16:49:03,761 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 18 [2020-12-23 16:49:03,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:03,761 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-12-23 16:49:03,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 16:49:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-12-23 16:49:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 16:49:03,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:03,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:03,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 16:49:03,977 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:03,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:03,978 INFO L82 PathProgramCache]: Analyzing trace with hash 358816956, now seen corresponding path program 1 times [2020-12-23 16:49:03,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:03,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947077874] [2020-12-23 16:49:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:04,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947077874] [2020-12-23 16:49:04,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718276568] [2020-12-23 16:49:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:04,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 16:49:04,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:04,320 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_22|]} [2020-12-23 16:49:04,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:04,326 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 [2020-12-23 16:49:04,327 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:04,335 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:04,344 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:04,346 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:04,354 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:04,357 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:04,358 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-12-23 16:49:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:04,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:04,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2020-12-23 16:49:04,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586190561] [2020-12-23 16:49:04,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 16:49:04,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:04,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 16:49:04,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-12-23 16:49:04,737 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 21 states. [2020-12-23 16:49:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:06,614 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-23 16:49:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 16:49:06,615 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2020-12-23 16:49:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:06,616 INFO L225 Difference]: With dead ends: 53 [2020-12-23 16:49:06,616 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 16:49:06,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=270, Invalid=1370, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 16:49:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 16:49:06,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-23 16:49:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 16:49:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-12-23 16:49:06,619 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2020-12-23 16:49:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:06,620 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-12-23 16:49:06,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 16:49:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-12-23 16:49:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 16:49:06,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:06,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:06,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:06,831 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:06,833 INFO L82 PathProgramCache]: Analyzing trace with hash 316092298, now seen corresponding path program 1 times [2020-12-23 16:49:06,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:06,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70160895] [2020-12-23 16:49:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:06,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70160895] [2020-12-23 16:49:06,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553893472] [2020-12-23 16:49:06,957 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 [2020-12-23 16:49:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:07,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 16:49:07,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:07,068 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_16|], 1=[|v_#valid_23|]} [2020-12-23 16:49:07,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:07,083 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 [2020-12-23 16:49:07,088 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:07,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:07,125 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:07,128 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:07,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:07,140 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:07,140 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-12-23 16:49:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:49:07,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:07,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-23 16:49:07,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419416721] [2020-12-23 16:49:07,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 16:49:07,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:07,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 16:49:07,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:49:07,307 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 12 states. [2020-12-23 16:49:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:07,517 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-12-23 16:49:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:49:07,517 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-12-23 16:49:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:07,519 INFO L225 Difference]: With dead ends: 25 [2020-12-23 16:49:07,519 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 16:49:07,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-12-23 16:49:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 16:49:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-23 16:49:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 16:49:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-23 16:49:07,524 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2020-12-23 16:49:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:07,525 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-23 16:49:07,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 16:49:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-23 16:49:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 16:49:07,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:07,528 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:07,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:07,743 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:07,744 INFO L82 PathProgramCache]: Analyzing trace with hash 2137348900, now seen corresponding path program 2 times [2020-12-23 16:49:07,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:07,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518819876] [2020-12-23 16:49:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:08,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518819876] [2020-12-23 16:49:08,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343804352] [2020-12-23 16:49:08,056 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 [2020-12-23 16:49:08,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:08,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:08,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 16:49:08,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:08,155 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:08,157 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:08,161 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:08,161 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:08,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:49:08,228 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 [2020-12-23 16:49:08,229 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:08,238 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:08,240 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:08,240 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2020-12-23 16:49:08,533 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 [2020-12-23 16:49:08,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:08,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:08,556 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:08,557 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:44, output treesize:29 [2020-12-23 16:49:08,713 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:08,714 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 20 treesize of output 20 [2020-12-23 16:49:08,715 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:49:08,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:08,734 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:49:08,740 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-23 16:49:08,745 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:08,745 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:29 [2020-12-23 16:49:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:08,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:08,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2020-12-23 16:49:08,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457568086] [2020-12-23 16:49:08,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 16:49:08,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:08,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 16:49:08,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2020-12-23 16:49:08,888 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 24 states. [2020-12-23 16:49:09,470 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-23 16:49:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:10,781 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-12-23 16:49:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 16:49:10,781 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 22 [2020-12-23 16:49:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:10,782 INFO L225 Difference]: With dead ends: 46 [2020-12-23 16:49:10,782 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 16:49:10,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=282, Invalid=1880, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 16:49:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 16:49:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-12-23 16:49:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 16:49:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-12-23 16:49:10,786 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 22 [2020-12-23 16:49:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:10,786 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-12-23 16:49:10,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 16:49:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-12-23 16:49:10,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 16:49:10,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:10,787 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:10,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 16:49:10,992 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:10,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:10,993 INFO L82 PathProgramCache]: Analyzing trace with hash 269887706, now seen corresponding path program 3 times [2020-12-23 16:49:10,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:10,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119721610] [2020-12-23 16:49:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:11,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119721610] [2020-12-23 16:49:11,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053446501] [2020-12-23 16:49:11,392 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:11,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 16:49:11,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:11,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 68 conjunts are in the unsatisfiable core [2020-12-23 16:49:11,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:11,508 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:11,509 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,515 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:11,516 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 16:49:11,617 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 [2020-12-23 16:49:11,618 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,628 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:11,630 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. [2020-12-23 16:49:11,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2020-12-23 16:49:11,701 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 [2020-12-23 16:49:11,702 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:11,711 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,711 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-23 16:49:11,787 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 [2020-12-23 16:49:11,788 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,796 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:11,798 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:26, output treesize:11 [2020-12-23 16:49:11,857 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:11,858 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:11,861 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:11,862 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:11,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:11,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 24 [2020-12-23 16:49:11,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639085054] [2020-12-23 16:49:11,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-23 16:49:11,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-23 16:49:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2020-12-23 16:49:11,874 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 24 states. [2020-12-23 16:49:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:12,800 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-12-23 16:49:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 16:49:12,804 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 30 [2020-12-23 16:49:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:12,805 INFO L225 Difference]: With dead ends: 52 [2020-12-23 16:49:12,805 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 16:49:12,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2020-12-23 16:49:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 16:49:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-12-23 16:49:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 16:49:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-12-23 16:49:12,807 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2020-12-23 16:49:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:12,807 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-12-23 16:49:12,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-23 16:49:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-12-23 16:49:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 16:49:12,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:12,808 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:13,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:13,010 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash -826784969, now seen corresponding path program 4 times [2020-12-23 16:49:13,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:13,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28926737] [2020-12-23 16:49:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:13,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28926737] [2020-12-23 16:49:13,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539037179] [2020-12-23 16:49:13,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:13,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:49:13,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:13,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 71 conjunts are in the unsatisfiable core [2020-12-23 16:49:13,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:13,304 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_17|], 1=[|v_#valid_26|]} [2020-12-23 16:49:13,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:13,313 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 [2020-12-23 16:49:13,314 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,322 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,327 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:13,329 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,343 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,343 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:49:13,504 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 16 treesize of output 12 [2020-12-23 16:49:13,505 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,514 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,515 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-23 16:49:13,724 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 [2020-12-23 16:49:13,725 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,740 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:49:13,869 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 [2020-12-23 16:49:13,871 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,882 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:13,884 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:13,885 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:23 [2020-12-23 16:49:14,001 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:14,001 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 21 treesize of output 21 [2020-12-23 16:49:14,003 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:49:14,015 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:14,016 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:14,016 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:22 [2020-12-23 16:49:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:14,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:14,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 27 [2020-12-23 16:49:14,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235958724] [2020-12-23 16:49:14,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-23 16:49:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-23 16:49:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2020-12-23 16:49:14,199 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 28 states. [2020-12-23 16:49:14,918 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-23 16:49:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:15,810 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-12-23 16:49:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 16:49:15,811 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 34 [2020-12-23 16:49:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:15,812 INFO L225 Difference]: With dead ends: 41 [2020-12-23 16:49:15,812 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 16:49:15,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=266, Invalid=1456, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 16:49:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 16:49:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-12-23 16:49:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 16:49:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-23 16:49:15,815 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2020-12-23 16:49:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:15,815 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-23 16:49:15,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-23 16:49:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-23 16:49:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-23 16:49:15,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:15,816 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:16,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:16,031 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:16,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1709244048, now seen corresponding path program 5 times [2020-12-23 16:49:16,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:16,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236876297] [2020-12-23 16:49:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:16,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236876297] [2020-12-23 16:49:16,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566008015] [2020-12-23 16:49:16,536 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:16,661 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 16:49:16,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:16,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 88 conjunts are in the unsatisfiable core [2020-12-23 16:49:16,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:16,697 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:16,700 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:16,705 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:16,706 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:16,707 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 16:49:16,785 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 [2020-12-23 16:49:16,785 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:16,795 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:16,797 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:16,797 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2020-12-23 16:49:16,872 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 [2020-12-23 16:49:16,873 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:16,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:16,883 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:16,883 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-23 16:49:16,988 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 [2020-12-23 16:49:16,989 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:16,997 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:16,999 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:16,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-23 16:49:17,081 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2020-12-23 16:49:17,082 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:17,090 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:17,091 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:17,092 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-23 16:49:17,171 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:17,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:17,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:17,174 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:17,175 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:17,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:17,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 29 [2020-12-23 16:49:17,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564292537] [2020-12-23 16:49:17,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-23 16:49:17,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:17,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-23 16:49:17,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2020-12-23 16:49:17,185 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 29 states. [2020-12-23 16:49:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:18,395 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-12-23 16:49:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 16:49:18,396 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 38 [2020-12-23 16:49:18,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:18,397 INFO L225 Difference]: With dead ends: 64 [2020-12-23 16:49:18,397 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 16:49:18,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 16:49:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 16:49:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-12-23 16:49:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 16:49:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-23 16:49:18,402 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 38 [2020-12-23 16:49:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:18,402 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-23 16:49:18,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-23 16:49:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-23 16:49:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 16:49:18,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:18,403 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:18,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 16:49:18,618 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:18,619 INFO L82 PathProgramCache]: Analyzing trace with hash 849701869, now seen corresponding path program 6 times [2020-12-23 16:49:18,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:18,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670456170] [2020-12-23 16:49:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:18,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670456170] [2020-12-23 16:49:18,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505661978] [2020-12-23 16:49:18,894 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:19,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 16:49:19,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:19,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-23 16:49:19,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:19,045 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:19,046 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 [2020-12-23 16:49:19,048 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,073 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:49:19,076 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:19,076 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:49:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:19,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:19,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2020-12-23 16:49:19,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880296016] [2020-12-23 16:49:19,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-23 16:49:19,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:19,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-23 16:49:19,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-12-23 16:49:19,288 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 21 states. [2020-12-23 16:49:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:19,771 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-12-23 16:49:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 16:49:19,771 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2020-12-23 16:49:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:19,772 INFO L225 Difference]: With dead ends: 49 [2020-12-23 16:49:19,772 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 16:49:19,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-12-23 16:49:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 16:49:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-12-23 16:49:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 16:49:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-12-23 16:49:19,774 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2020-12-23 16:49:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:19,775 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-12-23 16:49:19,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-23 16:49:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-12-23 16:49:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-23 16:49:19,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:19,776 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:19,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:19,991 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:19,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1224662086, now seen corresponding path program 7 times [2020-12-23 16:49:19,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:19,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858338092] [2020-12-23 16:49:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:20,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858338092] [2020-12-23 16:49:20,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342823804] [2020-12-23 16:49:20,684 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:20,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 93 conjunts are in the unsatisfiable core [2020-12-23 16:49:20,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:20,794 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:20,799 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:20,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:20,804 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:20,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:49:21,118 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 [2020-12-23 16:49:21,119 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,127 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:21,129 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:21,129 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:49:21,327 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 [2020-12-23 16:49:21,328 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,340 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:21,342 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. [2020-12-23 16:49:21,343 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:49:21,437 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:21,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:21,449 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,449 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:21,522 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:21,523 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,529 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:21,530 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,531 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:21,594 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2020-12-23 16:49:21,595 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:21,603 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-23 16:49:21,611 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:21,612 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,613 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:21,614 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:21,614 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:21,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:21,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21] total 38 [2020-12-23 16:49:21,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654640153] [2020-12-23 16:49:21,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-23 16:49:21,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:21,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-23 16:49:21,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1304, Unknown=0, NotChecked=0, Total=1406 [2020-12-23 16:49:21,628 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 38 states. [2020-12-23 16:49:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:23,236 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-12-23 16:49:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 16:49:23,237 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 46 [2020-12-23 16:49:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:23,238 INFO L225 Difference]: With dead ends: 76 [2020-12-23 16:49:23,238 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 16:49:23,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=251, Invalid=2505, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 16:49:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 16:49:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-12-23 16:49:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 16:49:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-12-23 16:49:23,241 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 46 [2020-12-23 16:49:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:23,242 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-12-23 16:49:23,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-23 16:49:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-12-23 16:49:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 16:49:23,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:23,242 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:23,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 16:49:23,449 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:23,450 INFO L82 PathProgramCache]: Analyzing trace with hash 300063907, now seen corresponding path program 8 times [2020-12-23 16:49:23,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:23,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060801067] [2020-12-23 16:49:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:23,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060801067] [2020-12-23 16:49:23,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221824946] [2020-12-23 16:49:23,757 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 [2020-12-23 16:49:23,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:23,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:23,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-23 16:49:23,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:24,123 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 28 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:24,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:24,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2020-12-23 16:49:24,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875673135] [2020-12-23 16:49:24,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-23 16:49:24,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:24,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-23 16:49:24,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2020-12-23 16:49:24,125 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 26 states. [2020-12-23 16:49:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:24,888 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-12-23 16:49:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 16:49:24,888 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2020-12-23 16:49:24,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:24,889 INFO L225 Difference]: With dead ends: 57 [2020-12-23 16:49:24,889 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 16:49:24,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:49:24,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 16:49:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-12-23 16:49:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 16:49:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-12-23 16:49:24,892 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 50 [2020-12-23 16:49:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:24,892 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-12-23 16:49:24,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-23 16:49:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-12-23 16:49:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 16:49:24,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:24,893 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:25,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 16:49:25,102 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:25,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:25,103 INFO L82 PathProgramCache]: Analyzing trace with hash -265764356, now seen corresponding path program 9 times [2020-12-23 16:49:25,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:25,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234112778] [2020-12-23 16:49:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:26,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234112778] [2020-12-23 16:49:26,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131725639] [2020-12-23 16:49:26,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:26,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 16:49:26,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:26,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 107 conjunts are in the unsatisfiable core [2020-12-23 16:49:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:26,219 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:26,220 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:26,224 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:26,226 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:26,226 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:49:26,597 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 [2020-12-23 16:49:26,598 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:26,610 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:26,614 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:26,614 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:49:26,836 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 [2020-12-23 16:49:26,837 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:26,848 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:26,850 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. [2020-12-23 16:49:26,850 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:49:26,954 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:26,956 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:26,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:26,963 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:26,963 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:27,033 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:27,034 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:27,043 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:27,123 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:27,125 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,131 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:27,133 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,133 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:27,213 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 [2020-12-23 16:49:27,215 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,221 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:27,223 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,223 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-23 16:49:27,229 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:27,230 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,231 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:27,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:27,232 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:27,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:27,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24] total 44 [2020-12-23 16:49:27,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129888448] [2020-12-23 16:49:27,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-23 16:49:27,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-23 16:49:27,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1773, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 16:49:27,247 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 44 states. [2020-12-23 16:49:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:29,270 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2020-12-23 16:49:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 16:49:29,270 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 54 [2020-12-23 16:49:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:29,271 INFO L225 Difference]: With dead ends: 88 [2020-12-23 16:49:29,271 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 16:49:29,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=288, Invalid=3372, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 16:49:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 16:49:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-12-23 16:49:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 16:49:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-12-23 16:49:29,275 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2020-12-23 16:49:29,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:29,276 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-12-23 16:49:29,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-23 16:49:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-12-23 16:49:29,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-23 16:49:29,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:29,276 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:29,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 16:49:29,477 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1445516633, now seen corresponding path program 10 times [2020-12-23 16:49:29,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:29,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640940140] [2020-12-23 16:49:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 28 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:29,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640940140] [2020-12-23 16:49:29,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673088530] [2020-12-23 16:49:29,858 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:29,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:49:29,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:29,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 113 conjunts are in the unsatisfiable core [2020-12-23 16:49:29,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:29,984 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_19|], 1=[|v_#valid_30|]} [2020-12-23 16:49:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:49:29,989 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 [2020-12-23 16:49:29,990 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:29,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:30,003 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:30,004 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,013 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:30,014 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,014 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:49:30,346 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 16 treesize of output 12 [2020-12-23 16:49:30,347 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:30,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-23 16:49:30,605 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 [2020-12-23 16:49:30,607 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,619 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:30,620 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,620 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:49:30,741 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 [2020-12-23 16:49:30,743 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:30,765 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:49:30,899 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 [2020-12-23 16:49:30,901 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:30,914 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:30,915 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:49:31,044 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 [2020-12-23 16:49:31,046 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:31,057 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:31,058 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:31,058 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:49:31,194 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 [2020-12-23 16:49:31,195 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:31,207 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:31,209 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:31,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:23 [2020-12-23 16:49:31,363 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:31,364 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 21 treesize of output 21 [2020-12-23 16:49:31,365 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:49:31,377 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:31,377 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:31,378 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:22 [2020-12-23 16:49:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:31,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:31,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25] total 42 [2020-12-23 16:49:31,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570868753] [2020-12-23 16:49:31,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-23 16:49:31,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:31,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-23 16:49:31,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1673, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:49:31,609 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 43 states. [2020-12-23 16:49:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:34,562 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2020-12-23 16:49:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 16:49:34,562 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 58 [2020-12-23 16:49:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:34,563 INFO L225 Difference]: With dead ends: 65 [2020-12-23 16:49:34,563 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 16:49:34,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=542, Invalid=3364, Unknown=0, NotChecked=0, Total=3906 [2020-12-23 16:49:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 16:49:34,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-12-23 16:49:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 16:49:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-12-23 16:49:34,567 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 58 [2020-12-23 16:49:34,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:34,567 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-12-23 16:49:34,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-23 16:49:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-12-23 16:49:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-23 16:49:34,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:34,568 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:34,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 16:49:34,776 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:34,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1063800910, now seen corresponding path program 11 times [2020-12-23 16:49:34,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:34,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292946770] [2020-12-23 16:49:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:35,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292946770] [2020-12-23 16:49:35,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959046099] [2020-12-23 16:49:35,870 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 [2020-12-23 16:49:36,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-23 16:49:36,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:36,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 122 conjunts are in the unsatisfiable core [2020-12-23 16:49:36,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:36,279 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:36,281 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:36,285 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:36,285 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:36,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:49:36,763 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 [2020-12-23 16:49:36,764 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:36,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:36,775 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:36,775 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:49:37,018 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 [2020-12-23 16:49:37,019 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,028 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:37,030 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. [2020-12-23 16:49:37,030 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:49:37,149 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:37,150 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,157 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:37,159 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:37,246 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:37,247 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,253 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:37,254 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,254 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:37,335 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:37,337 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:37,346 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,346 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:37,431 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:37,433 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,439 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:37,441 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,441 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:37,510 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 [2020-12-23 16:49:37,512 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,518 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:37,520 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,520 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-23 16:49:37,526 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:37,527 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,529 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:37,529 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:37,530 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:37,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:37,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27] total 50 [2020-12-23 16:49:37,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665530663] [2020-12-23 16:49:37,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-12-23 16:49:37,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:37,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-12-23 16:49:37,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2314, Unknown=0, NotChecked=0, Total=2450 [2020-12-23 16:49:37,552 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 50 states. [2020-12-23 16:49:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:40,143 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2020-12-23 16:49:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 16:49:40,143 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 62 [2020-12-23 16:49:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:40,145 INFO L225 Difference]: With dead ends: 100 [2020-12-23 16:49:40,145 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 16:49:40,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=325, Invalid=4367, Unknown=0, NotChecked=0, Total=4692 [2020-12-23 16:49:40,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 16:49:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2020-12-23 16:49:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 16:49:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-12-23 16:49:40,149 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2020-12-23 16:49:40,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:40,149 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-12-23 16:49:40,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-12-23 16:49:40,149 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-12-23 16:49:40,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 16:49:40,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:40,150 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:40,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:40,351 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:40,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:40,352 INFO L82 PathProgramCache]: Analyzing trace with hash 397481487, now seen corresponding path program 12 times [2020-12-23 16:49:40,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:40,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976718453] [2020-12-23 16:49:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 45 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:40,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976718453] [2020-12-23 16:49:40,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433169481] [2020-12-23 16:49:40,815 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 [2020-12-23 16:49:41,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-23 16:49:41,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:41,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 93 conjunts are in the unsatisfiable core [2020-12-23 16:49:41,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:41,274 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:41,275 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 [2020-12-23 16:49:41,276 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:41,306 INFO L625 ElimStorePlain]: treesize reduction 10, result has 70.6 percent of original size [2020-12-23 16:49:41,308 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:41,308 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:15 [2020-12-23 16:49:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:42,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:42,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2020-12-23 16:49:42,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61233971] [2020-12-23 16:49:42,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-23 16:49:42,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:42,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-23 16:49:42,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 16:49:42,309 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 39 states. [2020-12-23 16:49:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:44,615 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-12-23 16:49:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-23 16:49:44,616 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 66 [2020-12-23 16:49:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:44,617 INFO L225 Difference]: With dead ends: 73 [2020-12-23 16:49:44,617 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 16:49:44,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=580, Invalid=2612, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 16:49:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 16:49:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-12-23 16:49:44,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-23 16:49:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-12-23 16:49:44,621 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2020-12-23 16:49:44,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:44,621 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-12-23 16:49:44,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-23 16:49:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-12-23 16:49:44,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 16:49:44,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:44,622 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:44,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:44,824 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:44,825 INFO L82 PathProgramCache]: Analyzing trace with hash 235185512, now seen corresponding path program 13 times [2020-12-23 16:49:44,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:44,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347464144] [2020-12-23 16:49:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 16 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:46,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347464144] [2020-12-23 16:49:46,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010059526] [2020-12-23 16:49:46,295 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 [2020-12-23 16:49:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:46,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 137 conjunts are in the unsatisfiable core [2020-12-23 16:49:46,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:46,446 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:46,447 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:46,453 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:46,454 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:46,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:49:47,114 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 [2020-12-23 16:49:47,115 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,126 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:47,127 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:47,128 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:49:47,415 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2020-12-23 16:49:47,417 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,429 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:47,432 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. [2020-12-23 16:49:47,433 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:49:47,564 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:47,567 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,575 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:47,576 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,576 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:47,670 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:47,674 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,681 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:47,683 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,683 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:47,777 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:47,779 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,786 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:47,788 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,788 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:47,890 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:47,891 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,898 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:47,900 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,900 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:47,987 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:47,988 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,995 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:47,998 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:47,998 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:49:48,089 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 [2020-12-23 16:49:48,090 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:48,098 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:48,103 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:48,103 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-23 16:49:48,112 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:49:48,113 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:48,115 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:48,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:48,116 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:49:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 16 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:48,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:48,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 30] total 56 [2020-12-23 16:49:48,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367956684] [2020-12-23 16:49:48,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-12-23 16:49:48,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:48,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-12-23 16:49:48,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2927, Unknown=0, NotChecked=0, Total=3080 [2020-12-23 16:49:48,145 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 56 states. [2020-12-23 16:49:51,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:51,893 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2020-12-23 16:49:51,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 16:49:51,893 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 70 [2020-12-23 16:49:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:51,894 INFO L225 Difference]: With dead ends: 112 [2020-12-23 16:49:51,894 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 16:49:51,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=362, Invalid=5490, Unknown=0, NotChecked=0, Total=5852 [2020-12-23 16:49:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 16:49:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2020-12-23 16:49:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 16:49:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-12-23 16:49:51,900 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 70 [2020-12-23 16:49:51,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:51,900 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-12-23 16:49:51,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-12-23 16:49:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-12-23 16:49:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 16:49:51,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:51,901 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:52,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:49:52,114 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:52,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:52,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1563713221, now seen corresponding path program 14 times [2020-12-23 16:49:52,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:52,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120514768] [2020-12-23 16:49:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 66 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:52,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120514768] [2020-12-23 16:49:52,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061766257] [2020-12-23 16:49:52,687 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 [2020-12-23 16:49:52,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:49:52,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:52,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 90 conjunts are in the unsatisfiable core [2020-12-23 16:49:52,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 91 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:53,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:49:53,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 34 [2020-12-23 16:49:53,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821368796] [2020-12-23 16:49:53,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-23 16:49:53,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:49:53,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-23 16:49:53,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:49:53,272 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 35 states. [2020-12-23 16:49:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:49:54,520 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-12-23 16:49:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 16:49:54,521 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 74 [2020-12-23 16:49:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:49:54,522 INFO L225 Difference]: With dead ends: 81 [2020-12-23 16:49:54,522 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 16:49:54,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=436, Invalid=1726, Unknown=0, NotChecked=0, Total=2162 [2020-12-23 16:49:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 16:49:54,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-12-23 16:49:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-23 16:49:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-12-23 16:49:54,525 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 74 [2020-12-23 16:49:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:49:54,525 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-12-23 16:49:54,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-12-23 16:49:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-12-23 16:49:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 16:49:54,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:49:54,526 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:49:54,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-23 16:49:54,740 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:49:54,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:49:54,741 INFO L82 PathProgramCache]: Analyzing trace with hash -626482402, now seen corresponding path program 15 times [2020-12-23 16:49:54,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:49:54,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824196330] [2020-12-23 16:49:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:49:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:49:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:49:56,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824196330] [2020-12-23 16:49:56,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300464043] [2020-12-23 16:49:56,545 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 [2020-12-23 16:49:57,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-23 16:49:57,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:49:57,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 205 conjunts are in the unsatisfiable core [2020-12-23 16:49:57,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:49:57,352 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:49:57,354 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:57,364 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:57,365 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:49:57,365 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-23 16:49:58,279 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 [2020-12-23 16:49:58,280 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:58,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:58,296 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:49:58,297 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-23 16:49:58,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:58,652 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:58,668 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:58,670 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. [2020-12-23 16:49:58,671 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:49:58,909 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:58,911 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:58,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:58,930 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. [2020-12-23 16:49:58,930 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:49:59,197 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:59,198 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:59,212 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:59,214 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. [2020-12-23 16:49:59,214 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:49:59,487 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:59,489 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:59,505 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:59,507 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. [2020-12-23 16:49:59,508 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:49:59,770 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:49:59,772 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:49:59,787 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:49:59,789 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. [2020-12-23 16:49:59,789 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:50:00,062 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:00,065 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:00,081 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:00,084 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. [2020-12-23 16:50:00,084 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:50:00,369 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:00,370 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:00,384 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:00,386 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. [2020-12-23 16:50:00,387 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:50:00,667 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 [2020-12-23 16:50:00,669 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:00,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:00,702 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. [2020-12-23 16:50:00,702 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:50:00,948 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:50:00,951 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:00,951 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 [2020-12-23 16:50:00,952 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:00,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:00,961 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:00,962 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2020-12-23 16:50:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:01,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:01,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 33] total 71 [2020-12-23 16:50:01,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511326515] [2020-12-23 16:50:01,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-12-23 16:50:01,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-12-23 16:50:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4764, Unknown=0, NotChecked=0, Total=4970 [2020-12-23 16:50:01,005 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 71 states. [2020-12-23 16:50:03,024 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-12-23 16:50:03,955 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-23 16:50:04,405 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-23 16:50:04,855 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-23 16:50:05,330 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-23 16:50:05,789 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-23 16:50:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:06,818 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2020-12-23 16:50:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 16:50:06,821 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 78 [2020-12-23 16:50:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:06,821 INFO L225 Difference]: With dead ends: 124 [2020-12-23 16:50:06,822 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 16:50:06,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=483, Invalid=7889, Unknown=0, NotChecked=0, Total=8372 [2020-12-23 16:50:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 16:50:06,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-12-23 16:50:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 16:50:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-12-23 16:50:06,825 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 78 [2020-12-23 16:50:06,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:06,825 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-12-23 16:50:06,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-12-23 16:50:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-12-23 16:50:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 16:50:06,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:06,826 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:07,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-23 16:50:07,031 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:50:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:07,032 INFO L82 PathProgramCache]: Analyzing trace with hash -605311109, now seen corresponding path program 16 times [2020-12-23 16:50:07,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:07,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042656392] [2020-12-23 16:50:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 91 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:07,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042656392] [2020-12-23 16:50:07,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349200960] [2020-12-23 16:50:07,687 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 [2020-12-23 16:50:07,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:50:07,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:07,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 155 conjunts are in the unsatisfiable core [2020-12-23 16:50:07,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:07,843 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_21|], 1=[|v_#valid_34|]} [2020-12-23 16:50:07,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:50:07,851 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 [2020-12-23 16:50:07,852 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:07,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:07,868 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:50:07,870 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:07,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:07,885 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:07,885 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:50:08,570 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 16 treesize of output 12 [2020-12-23 16:50:08,572 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:08,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:08,584 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:08,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-23 16:50:08,898 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2020-12-23 16:50:08,899 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:08,914 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:08,916 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:08,917 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:50:09,102 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 [2020-12-23 16:50:09,103 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:09,124 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,125 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:50:09,309 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 [2020-12-23 16:50:09,311 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:09,327 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,327 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:50:09,537 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 [2020-12-23 16:50:09,538 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,553 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:09,555 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,555 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:50:09,746 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2020-12-23 16:50:09,747 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:09,765 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:50:09,963 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 [2020-12-23 16:50:09,964 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:09,982 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:09,982 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:50:10,204 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 [2020-12-23 16:50:10,208 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:10,220 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:10,222 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:10,223 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:50:10,441 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 [2020-12-23 16:50:10,442 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:10,456 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:10,458 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:10,458 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:23 [2020-12-23 16:50:10,694 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:10,694 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 21 treesize of output 21 [2020-12-23 16:50:10,696 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:50:10,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:10,709 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:10,709 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:22 [2020-12-23 16:50:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 128 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:11,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:11,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 34] total 57 [2020-12-23 16:50:11,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966456141] [2020-12-23 16:50:11,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-12-23 16:50:11,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:11,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-12-23 16:50:11,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3080, Unknown=0, NotChecked=0, Total=3306 [2020-12-23 16:50:11,076 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 58 states. [2020-12-23 16:50:16,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:16,284 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2020-12-23 16:50:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-23 16:50:16,285 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 82 [2020-12-23 16:50:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:16,286 INFO L225 Difference]: With dead ends: 89 [2020-12-23 16:50:16,287 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 16:50:16,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=917, Invalid=6055, Unknown=0, NotChecked=0, Total=6972 [2020-12-23 16:50:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 16:50:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-12-23 16:50:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-23 16:50:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-12-23 16:50:16,290 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 82 [2020-12-23 16:50:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:16,290 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-12-23 16:50:16,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-12-23 16:50:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-12-23 16:50:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-23 16:50:16,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:16,291 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:16,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 16:50:16,499 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:50:16,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:16,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1757632300, now seen corresponding path program 17 times [2020-12-23 16:50:16,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:16,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367916275] [2020-12-23 16:50:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 20 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:18,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367916275] [2020-12-23 16:50:18,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136203335] [2020-12-23 16:50:18,765 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 [2020-12-23 16:50:19,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-23 16:50:19,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:19,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 171 conjunts are in the unsatisfiable core [2020-12-23 16:50:19,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:19,425 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_35|]} [2020-12-23 16:50:19,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:50:19,429 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 [2020-12-23 16:50:19,430 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:19,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:19,452 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:50:19,453 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:19,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:19,466 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:19,467 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:50:20,415 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 16 treesize of output 12 [2020-12-23 16:50:20,416 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:20,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:20,427 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:20,427 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 16:50:20,762 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 [2020-12-23 16:50:20,763 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:20,777 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:20,779 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:20,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:50:21,019 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 23 treesize of output 22 [2020-12-23 16:50:21,020 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:21,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:21,037 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:21,037 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:50:21,276 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 [2020-12-23 16:50:21,278 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:21,289 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:21,290 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:21,291 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:50:21,537 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 [2020-12-23 16:50:21,538 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:21,549 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:21,551 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:21,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:50:21,799 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 [2020-12-23 16:50:21,801 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:21,812 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:21,814 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:21,814 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:50:22,064 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 [2020-12-23 16:50:22,066 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:22,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:22,079 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:22,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:50:22,344 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 [2020-12-23 16:50:22,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:22,358 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:22,360 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:22,360 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:50:22,619 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2020-12-23 16:50:22,620 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:22,633 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:22,634 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:22,635 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:50:22,891 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 [2020-12-23 16:50:22,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:22,902 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:22,904 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:22,904 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:20 [2020-12-23 16:50:23,181 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:23,182 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 19 treesize of output 19 [2020-12-23 16:50:23,183 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:50:23,200 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:23,201 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:23,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:19 [2020-12-23 16:50:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 120 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:23,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:23,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 35] total 79 [2020-12-23 16:50:23,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048294418] [2020-12-23 16:50:23,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-12-23 16:50:23,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:23,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-12-23 16:50:23,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=5942, Unknown=0, NotChecked=0, Total=6162 [2020-12-23 16:50:23,629 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 79 states. [2020-12-23 16:50:27,288 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-12-23 16:50:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:36,417 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2020-12-23 16:50:36,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-12-23 16:50:36,418 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 86 [2020-12-23 16:50:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:36,419 INFO L225 Difference]: With dead ends: 142 [2020-12-23 16:50:36,419 INFO L226 Difference]: Without dead ends: 100 [2020-12-23 16:50:36,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3142 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=1271, Invalid=18469, Unknown=0, NotChecked=0, Total=19740 [2020-12-23 16:50:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-23 16:50:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2020-12-23 16:50:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 16:50:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-12-23 16:50:36,424 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 86 [2020-12-23 16:50:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:36,424 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-12-23 16:50:36,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-12-23 16:50:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-12-23 16:50:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-23 16:50:36,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:36,425 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:36,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 16:50:36,640 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:50:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:36,641 INFO L82 PathProgramCache]: Analyzing trace with hash -486951286, now seen corresponding path program 18 times [2020-12-23 16:50:36,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:36,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108692181] [2020-12-23 16:50:36,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 22 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:39,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108692181] [2020-12-23 16:50:39,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142189217] [2020-12-23 16:50:39,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-12-23 16:50:41,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-23 16:50:41,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:41,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 186 conjunts are in the unsatisfiable core [2020-12-23 16:50:41,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:41,967 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:50:41,968 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:41,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:41,974 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:41,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:50:43,148 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 [2020-12-23 16:50:43,149 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:43,159 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:43,160 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:50:43,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:50:43,557 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 [2020-12-23 16:50:43,559 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:43,572 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:43,574 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. [2020-12-23 16:50:43,574 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:50:43,729 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:43,731 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:43,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:43,739 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:43,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:50:43,845 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:43,847 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:43,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:43,856 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:43,857 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:50:43,967 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:43,968 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:43,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:43,976 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:43,977 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:50:44,090 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:44,092 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,100 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:44,101 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,102 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:50:44,219 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:44,220 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,226 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:44,228 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,228 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:50:44,352 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:44,356 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,362 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:44,364 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,364 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:50:44,479 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:44,480 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,488 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:44,490 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,490 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:50:44,618 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:50:44,620 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,628 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:44,630 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:50:44,744 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 [2020-12-23 16:50:44,746 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,752 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:44,756 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,756 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:12 [2020-12-23 16:50:44,863 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:50:44,864 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,866 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:44,867 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:44,867 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:50:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 22 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:44,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:44,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 39] total 75 [2020-12-23 16:50:44,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083062224] [2020-12-23 16:50:44,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-12-23 16:50:44,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:44,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-12-23 16:50:44,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=5343, Unknown=0, NotChecked=0, Total=5550 [2020-12-23 16:50:44,897 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 75 states. [2020-12-23 16:50:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:52,145 INFO L93 Difference]: Finished difference Result 148 states and 149 transitions. [2020-12-23 16:50:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-23 16:50:52,146 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 94 [2020-12-23 16:50:52,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:52,147 INFO L225 Difference]: With dead ends: 148 [2020-12-23 16:50:52,147 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 16:50:52,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=478, Invalid=9824, Unknown=0, NotChecked=0, Total=10302 [2020-12-23 16:50:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 16:50:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2020-12-23 16:50:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 16:50:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-12-23 16:50:52,151 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2020-12-23 16:50:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:52,152 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-12-23 16:50:52,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-12-23 16:50:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-12-23 16:50:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 16:50:52,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:52,153 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:52,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 16:50:52,367 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:50:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:52,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1113221351, now seen corresponding path program 19 times [2020-12-23 16:50:52,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:52,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036477465] [2020-12-23 16:50:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 153 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:53,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036477465] [2020-12-23 16:50:53,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223232948] [2020-12-23 16:50:53,266 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 [2020-12-23 16:50:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:53,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 117 conjunts are in the unsatisfiable core [2020-12-23 16:50:53,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 190 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:54,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:50:54,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 43 [2020-12-23 16:50:54,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080360532] [2020-12-23 16:50:54,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-23 16:50:54,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:50:54,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-23 16:50:54,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1635, Unknown=0, NotChecked=0, Total=1892 [2020-12-23 16:50:54,282 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 44 states. [2020-12-23 16:50:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:50:56,248 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-12-23 16:50:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-23 16:50:56,249 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2020-12-23 16:50:56,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:50:56,250 INFO L225 Difference]: With dead ends: 105 [2020-12-23 16:50:56,250 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 16:50:56,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=694, Invalid=2728, Unknown=0, NotChecked=0, Total=3422 [2020-12-23 16:50:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 16:50:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-12-23 16:50:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 16:50:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-12-23 16:50:56,253 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 98 [2020-12-23 16:50:56,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:50:56,254 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-12-23 16:50:56,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-23 16:50:56,254 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-12-23 16:50:56,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-23 16:50:56,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:50:56,255 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:50:56,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:50:56,462 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:50:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:50:56,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1268304960, now seen corresponding path program 20 times [2020-12-23 16:50:56,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:50:56,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914297522] [2020-12-23 16:50:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:50:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:50:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 24 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:50:59,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914297522] [2020-12-23 16:50:59,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927934044] [2020-12-23 16:50:59,652 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 [2020-12-23 16:50:59,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:50:59,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:50:59,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 194 conjunts are in the unsatisfiable core [2020-12-23 16:50:59,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:50:59,845 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_23|], 1=[|v_#valid_37|]} [2020-12-23 16:50:59,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:50:59,851 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 [2020-12-23 16:50:59,852 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,870 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:50:59,872 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,883 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:50:59,885 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:50:59,885 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:51:01,230 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 16 treesize of output 12 [2020-12-23 16:51:01,232 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:01,240 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:01,241 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:51:01,241 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 16:51:01,901 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 24 treesize of output 23 [2020-12-23 16:51:01,902 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:01,922 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:01,924 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. [2020-12-23 16:51:01,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:02,289 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 24 treesize of output 23 [2020-12-23 16:51:02,291 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:02,309 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:02,312 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. [2020-12-23 16:51:02,312 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:02,668 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 24 treesize of output 23 [2020-12-23 16:51:02,669 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:02,687 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:02,689 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. [2020-12-23 16:51:02,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:03,075 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 24 treesize of output 23 [2020-12-23 16:51:03,077 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:03,095 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:03,097 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. [2020-12-23 16:51:03,098 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:03,483 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 24 treesize of output 23 [2020-12-23 16:51:03,485 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:03,502 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:03,504 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. [2020-12-23 16:51:03,504 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:03,938 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 24 treesize of output 23 [2020-12-23 16:51:03,940 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:03,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:03,960 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. [2020-12-23 16:51:03,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:04,402 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 24 treesize of output 23 [2020-12-23 16:51:04,403 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:04,423 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:04,426 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. [2020-12-23 16:51:04,426 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:04,878 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 24 treesize of output 23 [2020-12-23 16:51:04,879 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:04,897 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:04,900 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. [2020-12-23 16:51:04,900 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:05,378 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 24 treesize of output 23 [2020-12-23 16:51:05,380 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:05,400 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:05,402 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. [2020-12-23 16:51:05,403 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:05,874 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 24 treesize of output 23 [2020-12-23 16:51:05,876 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:05,894 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:05,897 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. [2020-12-23 16:51:05,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:51:06,388 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 24 treesize of output 23 [2020-12-23 16:51:06,389 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:06,407 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:06,410 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. [2020-12-23 16:51:06,410 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:29 [2020-12-23 16:51:06,880 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:06,881 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 22 treesize of output 22 [2020-12-23 16:51:06,883 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:51:06,901 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:06,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:51:06,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:51:06,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:35 [2020-12-23 16:51:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 190 proven. 329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:07,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:51:07,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 42] total 94 [2020-12-23 16:51:07,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104937380] [2020-12-23 16:51:07,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-12-23 16:51:07,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:51:07,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-12-23 16:51:07,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=8467, Unknown=0, NotChecked=0, Total=8742 [2020-12-23 16:51:07,602 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 94 states. [2020-12-23 16:51:13,927 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-23 16:51:14,548 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-23 16:51:15,605 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 16:51:17,368 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 16:51:18,593 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 16:51:21,025 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 16:51:22,305 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 16:51:23,512 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 16:51:24,739 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-23 16:51:25,935 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-23 16:51:28,963 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-23 16:51:29,813 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-12-23 16:51:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:30,929 INFO L93 Difference]: Finished difference Result 166 states and 167 transitions. [2020-12-23 16:51:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-12-23 16:51:30,931 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 102 [2020-12-23 16:51:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:30,931 INFO L225 Difference]: With dead ends: 166 [2020-12-23 16:51:30,932 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 16:51:30,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4463 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=1649, Invalid=26073, Unknown=0, NotChecked=0, Total=27722 [2020-12-23 16:51:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 16:51:30,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2020-12-23 16:51:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 16:51:30,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-12-23 16:51:30,938 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 102 [2020-12-23 16:51:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:30,939 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-12-23 16:51:30,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-12-23 16:51:30,939 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-12-23 16:51:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-23 16:51:30,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:30,940 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:31,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-23 16:51:31,148 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:51:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:31,149 INFO L82 PathProgramCache]: Analyzing trace with hash 223537654, now seen corresponding path program 21 times [2020-12-23 16:51:31,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:31,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135323964] [2020-12-23 16:51:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:51:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 26 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:34,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135323964] [2020-12-23 16:51:34,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993725137] [2020-12-23 16:51:34,956 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 [2020-12-23 16:51:39,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-12-23 16:51:39,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:51:39,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 281 conjunts are in the unsatisfiable core [2020-12-23 16:51:39,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:51:39,770 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:51:39,772 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:39,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:39,783 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:51:39,783 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-23 16:51:41,666 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 [2020-12-23 16:51:41,668 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:41,685 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:41,687 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:51:41,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-23 16:51:42,243 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:42,245 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:42,263 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:42,265 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. [2020-12-23 16:51:42,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:42,644 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:42,646 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:42,664 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:42,667 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. [2020-12-23 16:51:42,667 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:43,083 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:43,085 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:43,105 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:43,107 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. [2020-12-23 16:51:43,108 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:43,535 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:43,536 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:43,556 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:43,558 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. [2020-12-23 16:51:43,559 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:43,960 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:43,962 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:43,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:43,982 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. [2020-12-23 16:51:43,983 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:44,387 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:44,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:44,410 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:44,412 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. [2020-12-23 16:51:44,413 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:44,826 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:44,828 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:44,851 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:44,853 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. [2020-12-23 16:51:44,854 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:45,265 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 [2020-12-23 16:51:45,267 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:45,289 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:45,292 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. [2020-12-23 16:51:45,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:51:45,726 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:45,728 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:45,747 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:45,750 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. [2020-12-23 16:51:45,750 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:46,172 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 [2020-12-23 16:51:46,180 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:46,200 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:46,202 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. [2020-12-23 16:51:46,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:51:46,628 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:46,630 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:46,648 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:46,651 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. [2020-12-23 16:51:46,651 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:47,073 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:51:47,075 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:47,095 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:47,104 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. [2020-12-23 16:51:47,104 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:51:47,501 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:51:47,504 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:47,504 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 [2020-12-23 16:51:47,505 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:51:47,514 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:51:47,516 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:51:47,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2020-12-23 16:51:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 26 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:51:47,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:51:47,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 45] total 99 [2020-12-23 16:51:47,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867937464] [2020-12-23 16:51:47,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-12-23 16:51:47,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:51:47,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-12-23 16:51:47,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=9412, Unknown=0, NotChecked=0, Total=9702 [2020-12-23 16:51:47,588 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 99 states. [2020-12-23 16:51:51,286 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-12-23 16:51:51,981 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-12-23 16:51:52,663 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-23 16:51:53,360 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-23 16:51:54,050 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-23 16:51:54,672 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-12-23 16:51:55,309 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-23 16:51:55,940 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-23 16:51:56,652 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-23 16:51:57,341 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-23 16:51:57,992 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-23 16:51:58,644 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-23 16:51:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:51:59,494 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2020-12-23 16:51:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-23 16:51:59,495 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 110 [2020-12-23 16:51:59,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:51:59,496 INFO L225 Difference]: With dead ends: 172 [2020-12-23 16:51:59,496 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 16:51:59,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4011 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=679, Invalid=15577, Unknown=0, NotChecked=0, Total=16256 [2020-12-23 16:51:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 16:51:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2020-12-23 16:51:59,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-23 16:51:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2020-12-23 16:51:59,501 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 110 [2020-12-23 16:51:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:51:59,502 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2020-12-23 16:51:59,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-12-23 16:51:59,502 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2020-12-23 16:51:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-23 16:51:59,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:51:59,503 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:51:59,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-23 16:51:59,714 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:51:59,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:51:59,715 INFO L82 PathProgramCache]: Analyzing trace with hash 382026323, now seen corresponding path program 22 times [2020-12-23 16:51:59,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:51:59,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706797869] [2020-12-23 16:51:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:51:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:52:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 231 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:52:01,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706797869] [2020-12-23 16:52:01,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32206766] [2020-12-23 16:52:01,082 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:52:01,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:52:01,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:52:01,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 211 conjunts are in the unsatisfiable core [2020-12-23 16:52:01,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:52:01,278 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_39|]} [2020-12-23 16:52:01,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:52:01,284 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 [2020-12-23 16:52:01,286 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:01,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:01,307 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:52:01,309 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:01,323 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:01,325 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:01,325 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:52:02,844 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 16 treesize of output 12 [2020-12-23 16:52:02,845 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:02,858 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:02,859 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:02,860 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-23 16:52:03,350 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 [2020-12-23 16:52:03,352 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:03,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:03,373 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:03,373 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:03,638 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2020-12-23 16:52:03,640 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:03,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:03,663 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:03,663 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:03,940 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 [2020-12-23 16:52:03,942 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:03,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:03,962 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:03,962 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:04,241 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 [2020-12-23 16:52:04,243 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:04,260 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:04,263 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:04,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:04,565 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 [2020-12-23 16:52:04,567 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:04,584 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:04,586 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:04,586 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:04,877 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 [2020-12-23 16:52:04,883 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:04,900 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:04,902 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:04,902 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:05,203 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 [2020-12-23 16:52:05,205 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:05,222 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:05,224 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:05,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:05,533 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 [2020-12-23 16:52:05,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:05,553 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:05,555 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:05,555 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:05,889 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 [2020-12-23 16:52:05,890 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:05,910 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:05,912 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:05,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:06,240 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 [2020-12-23 16:52:06,242 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:06,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:06,263 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:06,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:06,618 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 [2020-12-23 16:52:06,620 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:06,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:06,641 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:06,641 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:27 [2020-12-23 16:52:06,992 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 [2020-12-23 16:52:06,995 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:07,012 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:07,015 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:07,015 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:23 [2020-12-23 16:52:07,401 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:07,401 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 21 treesize of output 21 [2020-12-23 16:52:07,403 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:52:07,420 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:07,421 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:07,421 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:22 [2020-12-23 16:52:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 288 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:52:08,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:52:08,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 46] total 77 [2020-12-23 16:52:08,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684917496] [2020-12-23 16:52:08,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-12-23 16:52:08,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:52:08,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-12-23 16:52:08,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=5614, Unknown=0, NotChecked=0, Total=6006 [2020-12-23 16:52:08,029 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 78 states. [2020-12-23 16:52:11,974 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-23 16:52:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:52:19,499 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2020-12-23 16:52:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-23 16:52:19,500 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 114 [2020-12-23 16:52:19,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:52:19,501 INFO L225 Difference]: With dead ends: 121 [2020-12-23 16:52:19,501 INFO L226 Difference]: Without dead ends: 121 [2020-12-23 16:52:19,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1571, Invalid=10861, Unknown=0, NotChecked=0, Total=12432 [2020-12-23 16:52:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-23 16:52:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-12-23 16:52:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-23 16:52:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-12-23 16:52:19,505 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 114 [2020-12-23 16:52:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:52:19,505 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-12-23 16:52:19,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-12-23 16:52:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-12-23 16:52:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-23 16:52:19,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:52:19,519 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:52:19,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-12-23 16:52:19,727 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:52:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:52:19,728 INFO L82 PathProgramCache]: Analyzing trace with hash -757002324, now seen corresponding path program 23 times [2020-12-23 16:52:19,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:52:19,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035846628] [2020-12-23 16:52:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:52:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:52:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 28 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:52:24,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035846628] [2020-12-23 16:52:24,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522184395] [2020-12-23 16:52:24,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:52:36,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2020-12-23 16:52:36,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:52:36,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 227 conjunts are in the unsatisfiable core [2020-12-23 16:52:36,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:52:36,624 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_25|], 1=[|v_#valid_40|]} [2020-12-23 16:52:36,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:52:36,631 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 [2020-12-23 16:52:36,632 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:36,647 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:36,654 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:52:36,657 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:36,674 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:36,676 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:36,676 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:52:38,983 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 16 treesize of output 12 [2020-12-23 16:52:38,984 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:38,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:38,999 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:38,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 16:52:39,561 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 [2020-12-23 16:52:39,564 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:39,580 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:39,582 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:39,582 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:39,957 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 [2020-12-23 16:52:39,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:39,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:39,977 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:39,977 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:40,373 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 [2020-12-23 16:52:40,375 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:40,390 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:40,393 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:40,393 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:40,790 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 [2020-12-23 16:52:40,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:40,810 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:40,812 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:40,812 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:41,222 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 [2020-12-23 16:52:41,224 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:41,239 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:41,241 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:41,242 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:41,676 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 [2020-12-23 16:52:41,678 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:41,693 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:41,696 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:41,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:42,124 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 [2020-12-23 16:52:42,125 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:42,140 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:42,143 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:42,143 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:42,583 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 [2020-12-23 16:52:42,585 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:42,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:42,604 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:42,604 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:43,049 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 [2020-12-23 16:52:43,051 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:43,068 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:43,070 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:43,070 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:43,524 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 [2020-12-23 16:52:43,526 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:43,543 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:43,545 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:43,545 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:44,023 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 [2020-12-23 16:52:44,025 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:44,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:44,044 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:44,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:44,526 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 [2020-12-23 16:52:44,528 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:44,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:44,547 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:44,547 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:52:45,039 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 [2020-12-23 16:52:45,041 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:52:45,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:45,060 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:45,060 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:20 [2020-12-23 16:52:45,582 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:45,582 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 21 treesize of output 21 [2020-12-23 16:52:45,584 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:52:45,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:52:45,602 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:52:45,602 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:19 [2020-12-23 16:52:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 276 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:52:46,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:52:46,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 47] total 107 [2020-12-23 16:52:46,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421992269] [2020-12-23 16:52:46,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-12-23 16:52:46,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:52:46,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-12-23 16:52:46,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=11012, Unknown=0, NotChecked=0, Total=11342 [2020-12-23 16:52:46,404 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 107 states. [2020-12-23 16:52:55,197 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-12-23 16:52:55,839 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-23 16:52:56,964 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 16:52:58,547 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 16:52:59,899 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 16:53:01,236 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44