/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/cstrlen-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:00:15,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:00:15,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:00:15,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:00:15,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:00:15,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:00:15,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:00:15,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:00:15,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:00:15,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:00:15,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:00:15,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:00:15,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:00:15,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:00:15,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:00:15,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:00:15,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:00:15,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:00:15,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:00:15,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:00:15,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:00:15,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:00:15,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:00:15,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:00:15,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:00:15,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:00:15,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:00:15,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:00:15,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:00:15,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:00:15,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:00:15,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:00:15,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:00:15,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:00:15,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:00:15,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:00:15,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:00:15,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:00:15,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:00:15,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:00:15,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:00:15,480 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:00:15,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:00:15,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:00:15,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:00:15,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:00:15,481 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:00:15,483 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:00:15,483 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:00:15,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:00:15,484 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:00:15,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:00:15,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:00:15,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:00:15,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:00:15,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:15,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:00:15,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:00:15,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:00:15,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:00:15,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:00:15,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:00:15,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:00:15,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:00:15,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:00:15,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:00:15,973 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:00:15,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i [2021-01-07 05:00:16,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b8246e680/978ee3d480434e9a9aa59e6d9ff0cb70/FLAG4bd000dbb [2021-01-07 05:00:16,776 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:00:16,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i [2021-01-07 05:00:16,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b8246e680/978ee3d480434e9a9aa59e6d9ff0cb70/FLAG4bd000dbb [2021-01-07 05:00:17,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b8246e680/978ee3d480434e9a9aa59e6d9ff0cb70 [2021-01-07 05:00:17,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:00:17,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:00:17,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:17,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:00:17,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:00:17,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389b1557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17, skipping insertion in model container [2021-01-07 05:00:17,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:00:17,153 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] [2021-01-07 05:00:17,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:17,597 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~length1~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString1~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString1~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length1~0,],IntegerLiteral[1]]]]] [2021-01-07 05:00:17,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:00:17,702 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:00:17,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17 WrapperNode [2021-01-07 05:00:17,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:00:17,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:17,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:00:17,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:00:17,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:00:17,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:00:17,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:00:17,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:00:17,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... [2021-01-07 05:00:17,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:00:17,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:00:17,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:00:17,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:00:17,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:00:17,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:00:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:00:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:00:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:00:17,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:00:17,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:00:18,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:00:18,343 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-07 05:00:18,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:18 BoogieIcfgContainer [2021-01-07 05:00:18,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:00:18,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:00:18,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:00:18,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:00:18,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:00:17" (1/3) ... [2021-01-07 05:00:18,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccdaaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:18, skipping insertion in model container [2021-01-07 05:00:18,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:00:17" (2/3) ... [2021-01-07 05:00:18,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccdaaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:00:18, skipping insertion in model container [2021-01-07 05:00:18,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:18" (3/3) ... [2021-01-07 05:00:18,370 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrlen-alloca-2.i [2021-01-07 05:00:18,387 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:00:18,400 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-07 05:00:18,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-07 05:00:18,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:00:18,449 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:00:18,449 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:00:18,449 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:00:18,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:00:18,450 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:00:18,450 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:00:18,450 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:00:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-01-07 05:00:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:00:18,475 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:18,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:00:18,477 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:18,484 INFO L82 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2021-01-07 05:00:18,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:18,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196765189] [2021-01-07 05:00:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:18,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196765189] [2021-01-07 05:00:18,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:18,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:18,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265042032] [2021-01-07 05:00:18,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:18,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:18,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:18,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:18,737 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2021-01-07 05:00:18,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:18,793 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-01-07 05:00:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:18,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-07 05:00:18,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:18,803 INFO L225 Difference]: With dead ends: 40 [2021-01-07 05:00:18,804 INFO L226 Difference]: Without dead ends: 36 [2021-01-07 05:00:18,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-07 05:00:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2021-01-07 05:00:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-07 05:00:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-01-07 05:00:18,838 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 6 [2021-01-07 05:00:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:18,838 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-01-07 05:00:18,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-01-07 05:00:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:00:18,839 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:18,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:00:18,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:00:18,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:18,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:18,841 INFO L82 PathProgramCache]: Analyzing trace with hash 889508820, now seen corresponding path program 1 times [2021-01-07 05:00:18,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:18,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625091689] [2021-01-07 05:00:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:18,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625091689] [2021-01-07 05:00:18,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:18,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:00:18,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214785915] [2021-01-07 05:00:18,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:00:18,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:18,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:00:18,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:18,885 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 3 states. [2021-01-07 05:00:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:18,925 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-01-07 05:00:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:00:18,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-01-07 05:00:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:18,929 INFO L225 Difference]: With dead ends: 22 [2021-01-07 05:00:18,929 INFO L226 Difference]: Without dead ends: 22 [2021-01-07 05:00:18,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:00:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-07 05:00:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-01-07 05:00:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-07 05:00:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-01-07 05:00:18,936 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 6 [2021-01-07 05:00:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:18,936 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-01-07 05:00:18,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:00:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-01-07 05:00:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:00:18,937 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:18,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:00:18,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:00:18,938 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:18,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:18,940 INFO L82 PathProgramCache]: Analyzing trace with hash 889508821, now seen corresponding path program 1 times [2021-01-07 05:00:18,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:18,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700720010] [2021-01-07 05:00:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:19,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700720010] [2021-01-07 05:00:19,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:19,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:19,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301892382] [2021-01-07 05:00:19,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:19,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:19,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:19,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:19,042 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2021-01-07 05:00:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:19,066 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-01-07 05:00:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:19,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-07 05:00:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:19,068 INFO L225 Difference]: With dead ends: 21 [2021-01-07 05:00:19,068 INFO L226 Difference]: Without dead ends: 21 [2021-01-07 05:00:19,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-07 05:00:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-01-07 05:00:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-07 05:00:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-01-07 05:00:19,072 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2021-01-07 05:00:19,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:19,072 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-01-07 05:00:19,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-01-07 05:00:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 05:00:19,073 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:19,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 05:00:19,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:00:19,073 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:19,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:19,074 INFO L82 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2021-01-07 05:00:19,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:19,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369275029] [2021-01-07 05:00:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:19,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369275029] [2021-01-07 05:00:19,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:19,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:00:19,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954691284] [2021-01-07 05:00:19,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:00:19,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:19,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:00:19,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:19,137 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2021-01-07 05:00:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:19,182 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-01-07 05:00:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:19,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-01-07 05:00:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:19,184 INFO L225 Difference]: With dead ends: 35 [2021-01-07 05:00:19,184 INFO L226 Difference]: Without dead ends: 35 [2021-01-07 05:00:19,186 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 [2021-01-07 05:00:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-07 05:00:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2021-01-07 05:00:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-07 05:00:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-01-07 05:00:19,192 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2021-01-07 05:00:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:19,192 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-01-07 05:00:19,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:00:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-01-07 05:00:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:00:19,193 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:19,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:19,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:00:19,194 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:19,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:19,195 INFO L82 PathProgramCache]: Analyzing trace with hash 119484121, now seen corresponding path program 1 times [2021-01-07 05:00:19,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:19,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722196323] [2021-01-07 05:00:19,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:19,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722196323] [2021-01-07 05:00:19,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:19,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:19,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091126087] [2021-01-07 05:00:19,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:19,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:19,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:19,239 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2021-01-07 05:00:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:19,301 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-01-07 05:00:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:19,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-07 05:00:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:19,308 INFO L225 Difference]: With dead ends: 22 [2021-01-07 05:00:19,308 INFO L226 Difference]: Without dead ends: 22 [2021-01-07 05:00:19,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:00:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-07 05:00:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-01-07 05:00:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-07 05:00:19,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-01-07 05:00:19,316 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2021-01-07 05:00:19,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:19,316 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-01-07 05:00:19,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:19,317 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-01-07 05:00:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:00:19,317 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:19,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:19,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:00:19,319 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:19,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:19,320 INFO L82 PathProgramCache]: Analyzing trace with hash 119484122, now seen corresponding path program 1 times [2021-01-07 05:00:19,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:19,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560647515] [2021-01-07 05:00:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:19,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560647515] [2021-01-07 05:00:19,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:19,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:00:19,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005239276] [2021-01-07 05:00:19,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:19,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:19,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:19,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:19,424 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2021-01-07 05:00:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:19,477 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-01-07 05:00:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:19,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-07 05:00:19,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:19,479 INFO L225 Difference]: With dead ends: 28 [2021-01-07 05:00:19,479 INFO L226 Difference]: Without dead ends: 28 [2021-01-07 05:00:19,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:19,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-07 05:00:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-01-07 05:00:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-07 05:00:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-01-07 05:00:19,484 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2021-01-07 05:00:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:19,484 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-01-07 05:00:19,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-01-07 05:00:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:00:19,485 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:19,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:19,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:00:19,486 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:19,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1139876333, now seen corresponding path program 1 times [2021-01-07 05:00:19,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:19,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10936076] [2021-01-07 05:00:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:19,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10936076] [2021-01-07 05:00:19,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:19,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 05:00:19,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922927318] [2021-01-07 05:00:19,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:00:19,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:19,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:00:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:19,695 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2021-01-07 05:00:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:19,790 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-01-07 05:00:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:00:19,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-01-07 05:00:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:19,791 INFO L225 Difference]: With dead ends: 31 [2021-01-07 05:00:19,792 INFO L226 Difference]: Without dead ends: 31 [2021-01-07 05:00:19,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:00:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-07 05:00:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2021-01-07 05:00:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-07 05:00:19,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-01-07 05:00:19,796 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2021-01-07 05:00:19,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:19,796 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-01-07 05:00:19,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:00:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-01-07 05:00:19,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:00:19,797 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:19,797 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:19,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-07 05:00:19,798 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:19,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2021-01-07 05:00:19,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:19,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543163886] [2021-01-07 05:00:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:19,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543163886] [2021-01-07 05:00:19,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222969903] [2021-01-07 05:00:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:19,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:00:19,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:20,000 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:00:20,001 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:20,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:20,009 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:20,010 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:00:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:20,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:20,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:00:20,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152700850] [2021-01-07 05:00:20,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:00:20,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:20,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:00:20,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:00:20,058 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2021-01-07 05:00:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:20,115 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-01-07 05:00:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:00:20,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-07 05:00:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:20,117 INFO L225 Difference]: With dead ends: 38 [2021-01-07 05:00:20,117 INFO L226 Difference]: Without dead ends: 38 [2021-01-07 05:00:20,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:00:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-07 05:00:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2021-01-07 05:00:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-07 05:00:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-01-07 05:00:20,121 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 10 [2021-01-07 05:00:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:20,121 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-01-07 05:00:20,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:00:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-01-07 05:00:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:00:20,122 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:20,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:20,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-01-07 05:00:20,337 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1949222959, now seen corresponding path program 1 times [2021-01-07 05:00:20,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:20,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405964241] [2021-01-07 05:00:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:20,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405964241] [2021-01-07 05:00:20,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:20,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:00:20,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423348253] [2021-01-07 05:00:20,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:00:20,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:20,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:00:20,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:00:20,472 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 8 states. [2021-01-07 05:00:20,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:20,608 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-01-07 05:00:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:00:20,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2021-01-07 05:00:20,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:20,612 INFO L225 Difference]: With dead ends: 36 [2021-01-07 05:00:20,612 INFO L226 Difference]: Without dead ends: 36 [2021-01-07 05:00:20,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:00:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-07 05:00:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2021-01-07 05:00:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-07 05:00:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-01-07 05:00:20,629 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2021-01-07 05:00:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:20,629 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-01-07 05:00:20,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:00:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-01-07 05:00:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:00:20,656 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:20,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:20,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-07 05:00:20,656 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:20,657 INFO L82 PathProgramCache]: Analyzing trace with hash -204544928, now seen corresponding path program 1 times [2021-01-07 05:00:20,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:20,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529194519] [2021-01-07 05:00:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:20,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529194519] [2021-01-07 05:00:20,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:00:20,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:00:20,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498978585] [2021-01-07 05:00:20,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:00:20,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:20,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:00:20,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:00:20,718 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2021-01-07 05:00:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:20,738 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-01-07 05:00:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:00:20,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-07 05:00:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:20,739 INFO L225 Difference]: With dead ends: 24 [2021-01-07 05:00:20,739 INFO L226 Difference]: Without dead ends: 15 [2021-01-07 05:00:20,740 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 [2021-01-07 05:00:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-07 05:00:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-07 05:00:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-07 05:00:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-01-07 05:00:20,743 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-01-07 05:00:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:20,744 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-01-07 05:00:20,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:00:20,744 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-01-07 05:00:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:00:20,744 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:20,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:20,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-07 05:00:20,745 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:20,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:20,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1346179180, now seen corresponding path program 1 times [2021-01-07 05:00:20,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:20,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690219258] [2021-01-07 05:00:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:20,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690219258] [2021-01-07 05:00:20,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255569296] [2021-01-07 05:00:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:20,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-07 05:00:20,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:21,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:21,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-01-07 05:00:21,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327134237] [2021-01-07 05:00:21,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:00:21,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:21,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:00:21,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:00:21,051 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2021-01-07 05:00:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:21,145 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-01-07 05:00:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:00:21,145 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2021-01-07 05:00:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:21,146 INFO L225 Difference]: With dead ends: 21 [2021-01-07 05:00:21,146 INFO L226 Difference]: Without dead ends: 21 [2021-01-07 05:00:21,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:00:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-07 05:00:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-01-07 05:00:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-07 05:00:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-01-07 05:00:21,149 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2021-01-07 05:00:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:21,149 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-01-07 05:00:21,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:00:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-01-07 05:00:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:00:21,150 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:21,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:21,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:21,365 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:21,366 INFO L82 PathProgramCache]: Analyzing trace with hash -893036467, now seen corresponding path program 2 times [2021-01-07 05:00:21,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:21,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325270269] [2021-01-07 05:00:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:21,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325270269] [2021-01-07 05:00:21,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371135641] [2021-01-07 05:00:21,586 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:21,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:21,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:21,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-07 05:00:21,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:21,722 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:21,723 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:21,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:21,733 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:21,734 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:00:22,021 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:22,022 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-01-07 05:00:22,023 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:00:22,038 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:22,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:00:22,047 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:00:22,050 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:22,050 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:27 [2021-01-07 05:00:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:22,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:22,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2021-01-07 05:00:22,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11885899] [2021-01-07 05:00:22,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:00:22,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:00:22,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:00:22,144 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 18 states. [2021-01-07 05:00:23,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:23,087 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-01-07 05:00:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:00:23,088 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2021-01-07 05:00:23,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:23,088 INFO L225 Difference]: With dead ends: 33 [2021-01-07 05:00:23,088 INFO L226 Difference]: Without dead ends: 27 [2021-01-07 05:00:23,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 05:00:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-07 05:00:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-01-07 05:00:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-07 05:00:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-01-07 05:00:23,094 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2021-01-07 05:00:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:23,094 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-01-07 05:00:23,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:00:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-01-07 05:00:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:00:23,095 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:23,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:23,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:00:23,305 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:23,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1388594295, now seen corresponding path program 3 times [2021-01-07 05:00:23,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:23,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440463083] [2021-01-07 05:00:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:23,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440463083] [2021-01-07 05:00:23,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583780081] [2021-01-07 05:00:23,509 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:23,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-07 05:00:23,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:23,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-07 05:00:23,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:23,742 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:23,742 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:23,748 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:23,750 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:23,751 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:23,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:00:23,879 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:23,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:23,881 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:23,881 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:00:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:23,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:23,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-01-07 05:00:23,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745458938] [2021-01-07 05:00:23,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-07 05:00:23,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:23,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-07 05:00:23,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:00:23,891 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 19 states. [2021-01-07 05:00:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:24,305 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-01-07 05:00:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:00:24,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2021-01-07 05:00:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:24,307 INFO L225 Difference]: With dead ends: 38 [2021-01-07 05:00:24,307 INFO L226 Difference]: Without dead ends: 30 [2021-01-07 05:00:24,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-01-07 05:00:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-07 05:00:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-01-07 05:00:24,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-07 05:00:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-01-07 05:00:24,310 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2021-01-07 05:00:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:24,311 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-01-07 05:00:24,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-07 05:00:24,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-01-07 05:00:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:00:24,312 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:24,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:24,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:24,513 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash -954145076, now seen corresponding path program 4 times [2021-01-07 05:00:24,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:24,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708410545] [2021-01-07 05:00:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:24,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708410545] [2021-01-07 05:00:24,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159955268] [2021-01-07 05:00:24,718 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:24,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:00:24,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:24,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-07 05:00:24,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:24,784 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:00:24,785 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:24,790 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:24,791 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:24,792 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:00:24,873 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:00:24,873 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:24,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:24,882 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:24,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:00:25,081 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:25,083 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 [2021-01-07 05:00:25,092 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:00:25,103 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:25,105 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:25,105 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:24 [2021-01-07 05:00:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:25,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:25,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 19 [2021-01-07 05:00:25,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610875170] [2021-01-07 05:00:25,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 05:00:25,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:25,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 05:00:25,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:00:25,205 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 20 states. [2021-01-07 05:00:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:25,801 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-01-07 05:00:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:00:25,802 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 26 [2021-01-07 05:00:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:25,803 INFO L225 Difference]: With dead ends: 30 [2021-01-07 05:00:25,803 INFO L226 Difference]: Without dead ends: 30 [2021-01-07 05:00:25,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:00:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-07 05:00:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-01-07 05:00:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-07 05:00:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-01-07 05:00:25,806 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2021-01-07 05:00:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:25,807 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-01-07 05:00:25,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 05:00:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-01-07 05:00:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-07 05:00:25,808 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:25,808 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:26,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 05:00:26,022 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:26,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2105384571, now seen corresponding path program 5 times [2021-01-07 05:00:26,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:26,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172813781] [2021-01-07 05:00:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172813781] [2021-01-07 05:00:26,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707387882] [2021-01-07 05:00:26,274 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:26,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-01-07 05:00:26,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:26,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-07 05:00:26,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:26,528 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:26,529 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:26,535 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:26,538 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:26,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:26,665 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:00:26,666 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:26,668 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:26,669 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:26,669 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:00:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:26,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:26,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2021-01-07 05:00:26,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788279080] [2021-01-07 05:00:26,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-07 05:00:26,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:26,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-07 05:00:26,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-01-07 05:00:26,675 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 22 states. [2021-01-07 05:00:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:27,124 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2021-01-07 05:00:27,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:00:27,124 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2021-01-07 05:00:27,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:27,125 INFO L225 Difference]: With dead ends: 46 [2021-01-07 05:00:27,125 INFO L226 Difference]: Without dead ends: 36 [2021-01-07 05:00:27,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:00:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-07 05:00:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-01-07 05:00:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-07 05:00:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-01-07 05:00:27,129 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2021-01-07 05:00:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:27,129 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-01-07 05:00:27,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-07 05:00:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-01-07 05:00:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-07 05:00:27,130 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:27,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:27,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:27,345 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:27,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:27,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1625083528, now seen corresponding path program 6 times [2021-01-07 05:00:27,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:27,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613015793] [2021-01-07 05:00:27,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:27,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613015793] [2021-01-07 05:00:27,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819662086] [2021-01-07 05:00:27,565 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:27,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-01-07 05:00:27,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:27,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-07 05:00:27,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:27,657 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:00:27,658 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:27,664 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:27,665 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:27,665 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:00:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:27,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:27,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-01-07 05:00:27,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418722913] [2021-01-07 05:00:27,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:00:27,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:27,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:00:27,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:00:27,981 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 24 states. [2021-01-07 05:00:28,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:28,513 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-01-07 05:00:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:00:28,514 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2021-01-07 05:00:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:28,515 INFO L225 Difference]: With dead ends: 36 [2021-01-07 05:00:28,515 INFO L226 Difference]: Without dead ends: 36 [2021-01-07 05:00:28,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2021-01-07 05:00:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-07 05:00:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-01-07 05:00:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-07 05:00:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-01-07 05:00:28,518 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2021-01-07 05:00:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:28,518 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-01-07 05:00:28,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:00:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-01-07 05:00:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-07 05:00:28,519 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:28,519 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:28,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 05:00:28,734 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:28,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1662825919, now seen corresponding path program 7 times [2021-01-07 05:00:28,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:28,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486347467] [2021-01-07 05:00:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:29,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486347467] [2021-01-07 05:00:29,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965125213] [2021-01-07 05:00:29,025 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:29,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 45 conjunts are in the unsatisfiable core [2021-01-07 05:00:29,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:29,315 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:29,316 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:29,323 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:29,324 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:29,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:29,458 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:00:29,459 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:29,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:29,461 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:29,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:00:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:29,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:29,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2021-01-07 05:00:29,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457285392] [2021-01-07 05:00:29,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-07 05:00:29,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:29,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-07 05:00:29,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-01-07 05:00:29,469 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 25 states. [2021-01-07 05:00:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:30,128 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-01-07 05:00:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:00:30,129 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 34 [2021-01-07 05:00:30,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:30,130 INFO L225 Difference]: With dead ends: 54 [2021-01-07 05:00:30,130 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:00:30,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:00:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:00:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-01-07 05:00:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-07 05:00:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-01-07 05:00:30,134 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2021-01-07 05:00:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:30,134 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-01-07 05:00:30,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-07 05:00:30,135 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-01-07 05:00:30,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-07 05:00:30,135 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:30,136 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:30,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-07 05:00:30,339 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:30,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1974118660, now seen corresponding path program 8 times [2021-01-07 05:00:30,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:30,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472034373] [2021-01-07 05:00:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472034373] [2021-01-07 05:00:30,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482754265] [2021-01-07 05:00:30,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:30,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:30,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:30,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 40 conjunts are in the unsatisfiable core [2021-01-07 05:00:30,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:30,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:30,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 23 [2021-01-07 05:00:30,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420307864] [2021-01-07 05:00:30,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-01-07 05:00:30,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:30,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-01-07 05:00:30,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-01-07 05:00:30,928 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 24 states. [2021-01-07 05:00:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:31,339 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-01-07 05:00:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-07 05:00:31,340 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 38 [2021-01-07 05:00:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:31,341 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:00:31,341 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:00:31,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:00:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:00:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-01-07 05:00:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-07 05:00:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-01-07 05:00:31,344 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2021-01-07 05:00:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:31,344 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-01-07 05:00:31,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-01-07 05:00:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-01-07 05:00:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-07 05:00:31,346 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:31,346 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:31,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-07 05:00:31,561 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:31,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1247513155, now seen corresponding path program 9 times [2021-01-07 05:00:31,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:31,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390212241] [2021-01-07 05:00:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:31,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390212241] [2021-01-07 05:00:31,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636525858] [2021-01-07 05:00:31,883 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:31,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:00:31,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:31,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 51 conjunts are in the unsatisfiable core [2021-01-07 05:00:31,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:32,229 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:32,230 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:32,238 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:32,241 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:32,241 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:32,395 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:00:32,396 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:32,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:32,399 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:32,399 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:00:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:32,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:32,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 28 [2021-01-07 05:00:32,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031173081] [2021-01-07 05:00:32,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-01-07 05:00:32,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:32,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-01-07 05:00:32,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2021-01-07 05:00:32,426 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 28 states. [2021-01-07 05:00:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:33,170 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-01-07 05:00:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:00:33,170 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 40 [2021-01-07 05:00:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:33,171 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:00:33,171 INFO L226 Difference]: Without dead ends: 48 [2021-01-07 05:00:33,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2021-01-07 05:00:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-07 05:00:33,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2021-01-07 05:00:33,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-07 05:00:33,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-01-07 05:00:33,175 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 40 [2021-01-07 05:00:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:33,175 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-01-07 05:00:33,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-01-07 05:00:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-01-07 05:00:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-07 05:00:33,176 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:33,177 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:33,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:33,386 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:33,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1917613632, now seen corresponding path program 10 times [2021-01-07 05:00:33,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:33,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392260618] [2021-01-07 05:00:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:33,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392260618] [2021-01-07 05:00:33,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475732298] [2021-01-07 05:00:33,665 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:33,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:00:33,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:33,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 53 conjunts are in the unsatisfiable core [2021-01-07 05:00:33,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:33,760 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:00:33,761 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:33,769 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:33,770 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:33,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:00:33,896 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:00:33,897 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:33,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:33,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:33,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:00:34,292 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:34,292 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 [2021-01-07 05:00:34,294 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:00:34,307 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:34,309 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:34,310 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:24 [2021-01-07 05:00:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:34,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:34,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 28 [2021-01-07 05:00:34,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190646124] [2021-01-07 05:00:34,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-01-07 05:00:34,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:34,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-01-07 05:00:34,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:00:34,437 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 29 states. [2021-01-07 05:00:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:35,747 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2021-01-07 05:00:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:00:35,748 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 44 [2021-01-07 05:00:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:35,749 INFO L225 Difference]: With dead ends: 48 [2021-01-07 05:00:35,749 INFO L226 Difference]: Without dead ends: 48 [2021-01-07 05:00:35,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=249, Invalid=1311, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:00:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-07 05:00:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-01-07 05:00:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:00:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-01-07 05:00:35,753 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2021-01-07 05:00:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:35,753 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-01-07 05:00:35,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-01-07 05:00:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-01-07 05:00:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-07 05:00:35,754 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:35,754 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:35,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:35,961 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:35,961 INFO L82 PathProgramCache]: Analyzing trace with hash 285729785, now seen corresponding path program 11 times [2021-01-07 05:00:35,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:35,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85235831] [2021-01-07 05:00:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:36,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85235831] [2021-01-07 05:00:36,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865216812] [2021-01-07 05:00:36,405 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:36,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-01-07 05:00:36,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:36,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 57 conjunts are in the unsatisfiable core [2021-01-07 05:00:36,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:36,849 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:36,849 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:36,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:36,856 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:36,857 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:00:37,029 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:00:37,030 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:37,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:37,033 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:37,034 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:00:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:37,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:37,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 31 [2021-01-07 05:00:37,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936913525] [2021-01-07 05:00:37,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-01-07 05:00:37,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:37,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-01-07 05:00:37,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:00:37,042 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 31 states. [2021-01-07 05:00:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:38,070 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-01-07 05:00:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 05:00:38,071 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 46 [2021-01-07 05:00:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:38,071 INFO L225 Difference]: With dead ends: 70 [2021-01-07 05:00:38,072 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:00:38,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2021-01-07 05:00:38,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:00:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2021-01-07 05:00:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-07 05:00:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-01-07 05:00:38,076 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 46 [2021-01-07 05:00:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:38,076 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-01-07 05:00:38,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2021-01-07 05:00:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-01-07 05:00:38,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-07 05:00:38,077 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:38,077 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:38,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:38,283 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1048562116, now seen corresponding path program 12 times [2021-01-07 05:00:38,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:38,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341476208] [2021-01-07 05:00:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 45 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:38,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341476208] [2021-01-07 05:00:38,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518511901] [2021-01-07 05:00:38,627 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:38,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-01-07 05:00:38,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:38,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 46 conjunts are in the unsatisfiable core [2021-01-07 05:00:38,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:38,735 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:00:38,735 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:38,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:38,742 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:38,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:00:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:39,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:39,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-01-07 05:00:39,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271256003] [2021-01-07 05:00:39,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-01-07 05:00:39,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:39,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-01-07 05:00:39,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2021-01-07 05:00:39,368 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 36 states. [2021-01-07 05:00:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:40,396 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-01-07 05:00:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:00:40,397 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 50 [2021-01-07 05:00:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:40,397 INFO L225 Difference]: With dead ends: 54 [2021-01-07 05:00:40,397 INFO L226 Difference]: Without dead ends: 54 [2021-01-07 05:00:40,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=386, Invalid=1594, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:00:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-07 05:00:40,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-01-07 05:00:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-07 05:00:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-01-07 05:00:40,401 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2021-01-07 05:00:40,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:40,401 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-01-07 05:00:40,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-01-07 05:00:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-01-07 05:00:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-07 05:00:40,402 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:40,402 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:40,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-01-07 05:00:40,616 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:40,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:40,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1649120501, now seen corresponding path program 13 times [2021-01-07 05:00:40,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:40,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800686080] [2021-01-07 05:00:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 8 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:41,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800686080] [2021-01-07 05:00:41,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436851661] [2021-01-07 05:00:41,094 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:41,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-07 05:00:41,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:41,484 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:41,485 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:41,501 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:41,502 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:41,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:00:42,326 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:42,327 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-01-07 05:00:42,328 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:00:42,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:42,344 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:00:42,346 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:00:42,348 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:42,348 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:27 [2021-01-07 05:00:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 66 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:42,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:42,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 42 [2021-01-07 05:00:42,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647644388] [2021-01-07 05:00:42,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-01-07 05:00:42,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:42,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-01-07 05:00:42,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1587, Unknown=0, NotChecked=0, Total=1722 [2021-01-07 05:00:42,489 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 42 states. [2021-01-07 05:00:46,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:00:46,093 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2021-01-07 05:00:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-01-07 05:00:46,093 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 52 [2021-01-07 05:00:46,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:00:46,094 INFO L225 Difference]: With dead ends: 81 [2021-01-07 05:00:46,094 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:00:46,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=578, Invalid=3978, Unknown=0, NotChecked=0, Total=4556 [2021-01-07 05:00:46,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:00:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-01-07 05:00:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-07 05:00:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-01-07 05:00:46,098 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 52 [2021-01-07 05:00:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:00:46,098 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-01-07 05:00:46,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2021-01-07 05:00:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-01-07 05:00:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-07 05:00:46,099 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:00:46,099 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:00:46,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:46,303 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:00:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:00:46,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1873381553, now seen corresponding path program 14 times [2021-01-07 05:00:46,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:00:46,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748945577] [2021-01-07 05:00:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:00:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:00:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 9 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:46,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748945577] [2021-01-07 05:00:46,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405671746] [2021-01-07 05:00:46,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:00:46,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:00:46,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:00:46,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 63 conjunts are in the unsatisfiable core [2021-01-07 05:00:46,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:00:47,302 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:00:47,302 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:00:47,309 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:47,310 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:00:47,311 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2021-01-07 05:00:48,277 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:48,277 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-01-07 05:00:48,279 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:00:48,296 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:00:48,298 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:00:48,300 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2021-01-07 05:00:48,307 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:00:48,308 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:27 [2021-01-07 05:00:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 91 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:00:48,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:00:48,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2021-01-07 05:00:48,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941558921] [2021-01-07 05:00:48,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:00:48,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:00:48,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:00:48,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1912, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:00:48,476 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 46 states. [2021-01-07 05:01:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:02,520 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2021-01-07 05:01:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-01-07 05:01:02,521 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 58 [2021-01-07 05:01:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:02,521 INFO L225 Difference]: With dead ends: 89 [2021-01-07 05:01:02,521 INFO L226 Difference]: Without dead ends: 69 [2021-01-07 05:01:02,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=665, Invalid=4736, Unknown=1, NotChecked=0, Total=5402 [2021-01-07 05:01:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-07 05:01:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2021-01-07 05:01:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:01:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-01-07 05:01:02,527 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2021-01-07 05:01:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:02,527 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-01-07 05:01:02,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:01:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-01-07 05:01:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-07 05:01:02,529 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:02,529 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:02,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:01:02,730 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:02,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:02,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1985462061, now seen corresponding path program 15 times [2021-01-07 05:01:02,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:02,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999515559] [2021-01-07 05:01:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 10 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:03,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999515559] [2021-01-07 05:01:03,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399185177] [2021-01-07 05:01:03,448 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:03,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-01-07 05:01:03,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:03,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 75 conjunts are in the unsatisfiable core [2021-01-07 05:01:03,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:04,227 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:01:04,228 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:04,236 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:04,238 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:04,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:01:04,488 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:01:04,489 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:04,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:04,492 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:04,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:01:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 10 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:04,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:04,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 40 [2021-01-07 05:01:04,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458379617] [2021-01-07 05:01:04,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-01-07 05:01:04,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:04,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-01-07 05:01:04,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2021-01-07 05:01:04,505 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 40 states. [2021-01-07 05:01:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:06,439 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-01-07 05:01:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:01:06,439 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 64 [2021-01-07 05:01:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:06,440 INFO L225 Difference]: With dead ends: 94 [2021-01-07 05:01:06,440 INFO L226 Difference]: Without dead ends: 72 [2021-01-07 05:01:06,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=241, Invalid=2621, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:01:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-07 05:01:06,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2021-01-07 05:01:06,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-07 05:01:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-01-07 05:01:06,446 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 64 [2021-01-07 05:01:06,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:06,446 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-01-07 05:01:06,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2021-01-07 05:01:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-01-07 05:01:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-07 05:01:06,447 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:06,447 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:06,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:06,648 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:06,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1605838512, now seen corresponding path program 16 times [2021-01-07 05:01:06,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:06,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377342955] [2021-01-07 05:01:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 120 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:07,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377342955] [2021-01-07 05:01:07,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93360191] [2021-01-07 05:01:07,245 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:07,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:01:07,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:07,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 73 conjunts are in the unsatisfiable core [2021-01-07 05:01:07,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:07,341 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:01:07,342 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:07,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:07,349 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:07,349 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:01:07,504 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:01:07,505 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:07,514 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:07,515 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:07,515 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:01:08,350 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:08,350 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 [2021-01-07 05:01:08,352 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:01:08,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:08,368 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:08,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:24 [2021-01-07 05:01:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 162 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:08,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:08,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 40 [2021-01-07 05:01:08,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479995442] [2021-01-07 05:01:08,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-01-07 05:01:08,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-01-07 05:01:08,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1511, Unknown=0, NotChecked=0, Total=1640 [2021-01-07 05:01:08,557 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 41 states. [2021-01-07 05:01:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:11,242 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-01-07 05:01:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:01:11,243 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 68 [2021-01-07 05:01:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:11,244 INFO L225 Difference]: With dead ends: 72 [2021-01-07 05:01:11,244 INFO L226 Difference]: Without dead ends: 72 [2021-01-07 05:01:11,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=435, Invalid=2645, Unknown=0, NotChecked=0, Total=3080 [2021-01-07 05:01:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-01-07 05:01:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-01-07 05:01:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-07 05:01:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-01-07 05:01:11,248 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2021-01-07 05:01:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:11,248 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-01-07 05:01:11,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2021-01-07 05:01:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-01-07 05:01:11,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-07 05:01:11,249 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:11,249 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:11,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-01-07 05:01:11,459 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:11,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:11,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1317550185, now seen corresponding path program 17 times [2021-01-07 05:01:11,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:11,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834828511] [2021-01-07 05:01:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 11 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:12,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834828511] [2021-01-07 05:01:12,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080714301] [2021-01-07 05:01:12,264 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:12,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-01-07 05:01:12,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:12,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 81 conjunts are in the unsatisfiable core [2021-01-07 05:01:12,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:13,098 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:01:13,099 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:13,107 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:13,108 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:13,108 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:01:13,357 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:01:13,359 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:13,360 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:13,361 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:13,361 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:01:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 11 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:13,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:13,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 43 [2021-01-07 05:01:13,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877915704] [2021-01-07 05:01:13,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-01-07 05:01:13,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:13,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-01-07 05:01:13,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1705, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 05:01:13,375 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 43 states. [2021-01-07 05:01:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:15,476 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-01-07 05:01:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:01:15,477 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 70 [2021-01-07 05:01:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:15,478 INFO L225 Difference]: With dead ends: 102 [2021-01-07 05:01:15,478 INFO L226 Difference]: Without dead ends: 78 [2021-01-07 05:01:15,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=3047, Unknown=0, NotChecked=0, Total=3306 [2021-01-07 05:01:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-07 05:01:15,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2021-01-07 05:01:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 05:01:15,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-01-07 05:01:15,481 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 70 [2021-01-07 05:01:15,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:15,481 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-01-07 05:01:15,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2021-01-07 05:01:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-01-07 05:01:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-07 05:01:15,482 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:15,482 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:15,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-01-07 05:01:15,688 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:15,688 INFO L82 PathProgramCache]: Analyzing trace with hash 676245932, now seen corresponding path program 18 times [2021-01-07 05:01:15,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:15,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433255756] [2021-01-07 05:01:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 153 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:16,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433255756] [2021-01-07 05:01:16,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706012686] [2021-01-07 05:01:16,373 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:16,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-01-07 05:01:16,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:16,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 62 conjunts are in the unsatisfiable core [2021-01-07 05:01:16,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:16,595 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:01:16,595 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:16,602 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:16,603 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:16,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:01:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 190 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:18,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:18,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2021-01-07 05:01:18,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549985725] [2021-01-07 05:01:18,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-01-07 05:01:18,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:18,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-01-07 05:01:18,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2314, Unknown=0, NotChecked=0, Total=2652 [2021-01-07 05:01:18,003 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 52 states. [2021-01-07 05:01:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:20,351 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-01-07 05:01:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-01-07 05:01:20,351 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 74 [2021-01-07 05:01:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:20,352 INFO L225 Difference]: With dead ends: 78 [2021-01-07 05:01:20,352 INFO L226 Difference]: Without dead ends: 78 [2021-01-07 05:01:20,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=788, Invalid=3372, Unknown=0, NotChecked=0, Total=4160 [2021-01-07 05:01:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-07 05:01:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-01-07 05:01:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-07 05:01:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-01-07 05:01:20,356 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2021-01-07 05:01:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:20,357 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-01-07 05:01:20,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2021-01-07 05:01:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-01-07 05:01:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-07 05:01:20,358 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:20,358 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:20,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-01-07 05:01:20,572 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:20,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1332278373, now seen corresponding path program 19 times [2021-01-07 05:01:20,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:20,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144787009] [2021-01-07 05:01:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 12 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:21,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144787009] [2021-01-07 05:01:21,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371538923] [2021-01-07 05:01:21,445 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:21,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 87 conjunts are in the unsatisfiable core [2021-01-07 05:01:21,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:22,353 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:01:22,354 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:22,361 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:22,363 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:22,363 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:01:22,629 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:01:22,630 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:22,632 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:22,632 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:22,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:01:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 12 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:22,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:22,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 46 [2021-01-07 05:01:22,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358770624] [2021-01-07 05:01:22,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:01:22,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:22,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:01:22,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1962, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:01:22,644 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 46 states. [2021-01-07 05:01:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:25,223 INFO L93 Difference]: Finished difference Result 110 states and 111 transitions. [2021-01-07 05:01:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-01-07 05:01:25,224 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 76 [2021-01-07 05:01:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:25,225 INFO L225 Difference]: With dead ends: 110 [2021-01-07 05:01:25,225 INFO L226 Difference]: Without dead ends: 84 [2021-01-07 05:01:25,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=277, Invalid=3505, Unknown=0, NotChecked=0, Total=3782 [2021-01-07 05:01:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-07 05:01:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2021-01-07 05:01:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-07 05:01:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-01-07 05:01:25,229 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 76 [2021-01-07 05:01:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:25,229 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-01-07 05:01:25,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:01:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-01-07 05:01:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-07 05:01:25,230 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:25,230 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:25,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-01-07 05:01:25,434 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:25,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:25,435 INFO L82 PathProgramCache]: Analyzing trace with hash -420335768, now seen corresponding path program 20 times [2021-01-07 05:01:25,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:25,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122233513] [2021-01-07 05:01:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 190 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:26,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122233513] [2021-01-07 05:01:26,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243131548] [2021-01-07 05:01:26,248 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:26,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:01:26,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:26,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 75 conjunts are in the unsatisfiable core [2021-01-07 05:01:26,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 231 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:27,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:27,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 44 [2021-01-07 05:01:27,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802827791] [2021-01-07 05:01:27,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-01-07 05:01:27,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:27,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-01-07 05:01:27,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1687, Unknown=0, NotChecked=0, Total=1980 [2021-01-07 05:01:27,137 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 45 states. [2021-01-07 05:01:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:28,837 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-01-07 05:01:28,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-07 05:01:28,838 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 80 [2021-01-07 05:01:28,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:28,839 INFO L225 Difference]: With dead ends: 84 [2021-01-07 05:01:28,839 INFO L226 Difference]: Without dead ends: 84 [2021-01-07 05:01:28,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=727, Invalid=2695, Unknown=0, NotChecked=0, Total=3422 [2021-01-07 05:01:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-07 05:01:28,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2021-01-07 05:01:28,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-01-07 05:01:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-01-07 05:01:28,843 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2021-01-07 05:01:28,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:28,843 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-01-07 05:01:28,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2021-01-07 05:01:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-01-07 05:01:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-07 05:01:28,844 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:28,844 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:29,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:29,052 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash -215747807, now seen corresponding path program 21 times [2021-01-07 05:01:29,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:29,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511683689] [2021-01-07 05:01:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 13 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:30,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511683689] [2021-01-07 05:01:30,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325089781] [2021-01-07 05:01:30,094 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:30,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-01-07 05:01:30,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:30,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 93 conjunts are in the unsatisfiable core [2021-01-07 05:01:30,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:31,406 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:01:31,407 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:31,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:31,417 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:01:31,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:01:31,699 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:01:31,701 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:31,704 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:31,705 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:31,705 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:01:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 13 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:31,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:31,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 49 [2021-01-07 05:01:31,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823251739] [2021-01-07 05:01:31,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-01-07 05:01:31,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:31,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-01-07 05:01:31,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2237, Unknown=0, NotChecked=0, Total=2352 [2021-01-07 05:01:31,721 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 49 states. [2021-01-07 05:01:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:35,284 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2021-01-07 05:01:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:01:35,284 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 82 [2021-01-07 05:01:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:35,285 INFO L225 Difference]: With dead ends: 118 [2021-01-07 05:01:35,286 INFO L226 Difference]: Without dead ends: 90 [2021-01-07 05:01:35,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=295, Invalid=3995, Unknown=0, NotChecked=0, Total=4290 [2021-01-07 05:01:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-07 05:01:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2021-01-07 05:01:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 05:01:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2021-01-07 05:01:35,289 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 82 [2021-01-07 05:01:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:35,289 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2021-01-07 05:01:35,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2021-01-07 05:01:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2021-01-07 05:01:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-07 05:01:35,290 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:35,290 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:35,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:35,505 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:35,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:35,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1371037724, now seen corresponding path program 22 times [2021-01-07 05:01:35,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:35,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515046960] [2021-01-07 05:01:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 231 proven. 263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:36,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515046960] [2021-01-07 05:01:36,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802741443] [2021-01-07 05:01:36,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:36,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:01:36,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:36,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 88 conjunts are in the unsatisfiable core [2021-01-07 05:01:36,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:36,541 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:01:36,542 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:36,549 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:36,550 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:36,550 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:01:36,731 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:01:36,732 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:36,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:36,742 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:36,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:01:38,009 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:38,009 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 [2021-01-07 05:01:38,011 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:01:38,025 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:38,026 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:38,027 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:24 [2021-01-07 05:01:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 288 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:38,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:38,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 32] total 49 [2021-01-07 05:01:38,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704268774] [2021-01-07 05:01:38,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-01-07 05:01:38,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:38,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-01-07 05:01:38,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2270, Unknown=0, NotChecked=0, Total=2450 [2021-01-07 05:01:38,267 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 50 states. [2021-01-07 05:01:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:42,413 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2021-01-07 05:01:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-07 05:01:42,414 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 86 [2021-01-07 05:01:42,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:42,415 INFO L225 Difference]: With dead ends: 90 [2021-01-07 05:01:42,415 INFO L226 Difference]: Without dead ends: 90 [2021-01-07 05:01:42,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=606, Invalid=3950, Unknown=0, NotChecked=0, Total=4556 [2021-01-07 05:01:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-07 05:01:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2021-01-07 05:01:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-07 05:01:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-01-07 05:01:42,420 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2021-01-07 05:01:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:42,420 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-01-07 05:01:42,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2021-01-07 05:01:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-01-07 05:01:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-01-07 05:01:42,421 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:42,421 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:42,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-01-07 05:01:42,637 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash 987706525, now seen corresponding path program 23 times [2021-01-07 05:01:42,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:42,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23039924] [2021-01-07 05:01:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 14 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:43,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23039924] [2021-01-07 05:01:43,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347274909] [2021-01-07 05:01:43,897 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:44,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2021-01-07 05:01:44,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:44,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 94 conjunts are in the unsatisfiable core [2021-01-07 05:01:44,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:01:44,096 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:01:44,097 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:44,105 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:44,106 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:44,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:01:45,430 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:01:45,431 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:01:45,440 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:45,441 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:45,441 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-01-07 05:01:47,174 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:47,175 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 [2021-01-07 05:01:47,177 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:01:47,192 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:01:47,194 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:01:47,194 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:21 [2021-01-07 05:01:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 276 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:47,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:01:47,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32] total 65 [2021-01-07 05:01:47,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249299618] [2021-01-07 05:01:47,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-01-07 05:01:47,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:01:47,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-01-07 05:01:47,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3954, Unknown=0, NotChecked=0, Total=4160 [2021-01-07 05:01:47,504 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 65 states. [2021-01-07 05:01:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:01:56,975 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions. [2021-01-07 05:01:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-01-07 05:01:56,976 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 88 [2021-01-07 05:01:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:01:56,977 INFO L225 Difference]: With dead ends: 129 [2021-01-07 05:01:56,977 INFO L226 Difference]: Without dead ends: 99 [2021-01-07 05:01:56,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1200, Invalid=11910, Unknown=0, NotChecked=0, Total=13110 [2021-01-07 05:01:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-07 05:01:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2021-01-07 05:01:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-07 05:01:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2021-01-07 05:01:56,981 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 88 [2021-01-07 05:01:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:01:56,981 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2021-01-07 05:01:56,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2021-01-07 05:01:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2021-01-07 05:01:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-01-07 05:01:56,982 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:01:56,982 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:01:57,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:57,198 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:01:57,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:01:57,199 INFO L82 PathProgramCache]: Analyzing trace with hash -759383847, now seen corresponding path program 24 times [2021-01-07 05:01:57,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:01:57,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379941032] [2021-01-07 05:01:57,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:01:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:01:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 15 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:01:58,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379941032] [2021-01-07 05:01:58,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312768826] [2021-01-07 05:01:58,638 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:01:59,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-01-07 05:01:59,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:01:59,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 105 conjunts are in the unsatisfiable core [2021-01-07 05:01:59,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:00,297 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:02:00,298 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:00,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:00,307 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:00,307 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:02:00,676 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:02:00,677 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:00,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:00,680 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:00,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:02:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 15 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:00,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:00,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 55 [2021-01-07 05:02:00,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960013673] [2021-01-07 05:02:00,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-01-07 05:02:00,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:00,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-01-07 05:02:00,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2841, Unknown=0, NotChecked=0, Total=2970 [2021-01-07 05:02:00,697 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 55 states. [2021-01-07 05:02:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:05,284 INFO L93 Difference]: Finished difference Result 134 states and 135 transitions. [2021-01-07 05:02:05,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-07 05:02:05,285 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 94 [2021-01-07 05:02:05,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:05,287 INFO L225 Difference]: With dead ends: 134 [2021-01-07 05:02:05,287 INFO L226 Difference]: Without dead ends: 102 [2021-01-07 05:02:05,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=331, Invalid=5071, Unknown=0, NotChecked=0, Total=5402 [2021-01-07 05:02:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-07 05:02:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2021-01-07 05:02:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-07 05:02:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2021-01-07 05:02:05,291 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2021-01-07 05:02:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:05,291 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2021-01-07 05:02:05,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2021-01-07 05:02:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2021-01-07 05:02:05,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-01-07 05:02:05,292 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:05,292 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:05,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-01-07 05:02:05,508 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:02:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:05,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1483974372, now seen corresponding path program 25 times [2021-01-07 05:02:05,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:05,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815968501] [2021-01-07 05:02:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 325 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:06,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815968501] [2021-01-07 05:02:06,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677960144] [2021-01-07 05:02:06,722 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:06,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 90 conjunts are in the unsatisfiable core [2021-01-07 05:02:06,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 378 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:08,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:08,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35] total 53 [2021-01-07 05:02:08,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496426477] [2021-01-07 05:02:08,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-01-07 05:02:08,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-01-07 05:02:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=2434, Unknown=0, NotChecked=0, Total=2862 [2021-01-07 05:02:08,008 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 54 states. [2021-01-07 05:02:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:10,736 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-01-07 05:02:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-07 05:02:10,737 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 98 [2021-01-07 05:02:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:10,740 INFO L225 Difference]: With dead ends: 102 [2021-01-07 05:02:10,741 INFO L226 Difference]: Without dead ends: 102 [2021-01-07 05:02:10,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1057, Invalid=3913, Unknown=0, NotChecked=0, Total=4970 [2021-01-07 05:02:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-07 05:02:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-01-07 05:02:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-01-07 05:02:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-01-07 05:02:10,745 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2021-01-07 05:02:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:10,746 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-01-07 05:02:10,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2021-01-07 05:02:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-01-07 05:02:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-01-07 05:02:10,746 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:10,746 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:10,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-01-07 05:02:10,962 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:02:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:10,962 INFO L82 PathProgramCache]: Analyzing trace with hash -170229803, now seen corresponding path program 26 times [2021-01-07 05:02:10,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:10,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850923392] [2021-01-07 05:02:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 16 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:12,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850923392] [2021-01-07 05:02:12,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56734041] [2021-01-07 05:02:12,557 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:12,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:02:12,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:12,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 100 conjunts are in the unsatisfiable core [2021-01-07 05:02:12,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:12,694 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:02:12,699 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:12,706 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:12,707 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:12,707 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:02:14,447 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:02:14,448 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:14,457 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:14,458 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:14,459 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-01-07 05:02:17,835 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:17,836 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 [2021-01-07 05:02:17,837 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:02:17,856 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:17,857 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:02:17,858 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:17,859 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:37 [2021-01-07 05:02:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 378 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:18,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:18,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 74 [2021-01-07 05:02:18,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166155983] [2021-01-07 05:02:18,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-01-07 05:02:18,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:18,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-01-07 05:02:18,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=5150, Unknown=0, NotChecked=0, Total=5402 [2021-01-07 05:02:18,364 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 74 states. [2021-01-07 05:02:23,966 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-01-07 05:02:27,319 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-01-07 05:02:30,571 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-01-07 05:02:31,161 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-01-07 05:02:31,715 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-01-07 05:02:32,247 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-01-07 05:02:32,564 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2021-01-07 05:02:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:33,592 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2021-01-07 05:02:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-01-07 05:02:33,593 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 100 [2021-01-07 05:02:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:33,595 INFO L225 Difference]: With dead ends: 145 [2021-01-07 05:02:33,595 INFO L226 Difference]: Without dead ends: 111 [2021-01-07 05:02:33,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2016 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=1485, Invalid=15545, Unknown=0, NotChecked=0, Total=17030 [2021-01-07 05:02:33,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-07 05:02:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2021-01-07 05:02:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-07 05:02:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2021-01-07 05:02:33,599 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 100 [2021-01-07 05:02:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:33,599 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2021-01-07 05:02:33,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2021-01-07 05:02:33,599 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2021-01-07 05:02:33,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-01-07 05:02:33,600 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:33,600 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:33,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-01-07 05:02:33,807 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:02:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:33,808 INFO L82 PathProgramCache]: Analyzing trace with hash 307399057, now seen corresponding path program 27 times [2021-01-07 05:02:33,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:33,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385804838] [2021-01-07 05:02:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 17 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:35,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385804838] [2021-01-07 05:02:35,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312852546] [2021-01-07 05:02:35,895 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:36,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-01-07 05:02:36,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:36,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 117 conjunts are in the unsatisfiable core [2021-01-07 05:02:36,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:37,918 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:02:37,919 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:37,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:37,930 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:02:37,930 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:02:38,344 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:02:38,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:38,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:38,349 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:38,349 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:02:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 17 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:38,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:38,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 61 [2021-01-07 05:02:38,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947368552] [2021-01-07 05:02:38,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-01-07 05:02:38,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:38,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-01-07 05:02:38,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=3517, Unknown=0, NotChecked=0, Total=3660 [2021-01-07 05:02:38,380 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 61 states. [2021-01-07 05:02:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:44,430 INFO L93 Difference]: Finished difference Result 150 states and 151 transitions. [2021-01-07 05:02:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:02:44,431 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 106 [2021-01-07 05:02:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:44,432 INFO L225 Difference]: With dead ends: 150 [2021-01-07 05:02:44,433 INFO L226 Difference]: Without dead ends: 114 [2021-01-07 05:02:44,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=367, Invalid=6275, Unknown=0, NotChecked=0, Total=6642 [2021-01-07 05:02:44,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-01-07 05:02:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2021-01-07 05:02:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-01-07 05:02:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-01-07 05:02:44,437 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 106 [2021-01-07 05:02:44,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:44,437 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-01-07 05:02:44,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2021-01-07 05:02:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-01-07 05:02:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-01-07 05:02:44,438 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:44,438 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:44,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-01-07 05:02:44,643 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:02:44,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2029837652, now seen corresponding path program 28 times [2021-01-07 05:02:44,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:44,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376145231] [2021-01-07 05:02:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 435 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:46,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376145231] [2021-01-07 05:02:46,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318718856] [2021-01-07 05:02:46,359 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:46,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:02:46,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:46,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 108 conjunts are in the unsatisfiable core [2021-01-07 05:02:46,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:02:46,499 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:02:46,500 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:46,509 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:46,510 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:46,510 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:02:46,791 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-01-07 05:02:46,792 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:02:46,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:46,803 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:46,803 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2021-01-07 05:02:49,142 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,143 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 [2021-01-07 05:02:49,144 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:02:49,164 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:02:49,165 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:02:49,165 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:24 [2021-01-07 05:02:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 512 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:49,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:02:49,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 40] total 61 [2021-01-07 05:02:49,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375493765] [2021-01-07 05:02:49,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-01-07 05:02:49,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:02:49,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-01-07 05:02:49,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=3520, Unknown=0, NotChecked=0, Total=3782 [2021-01-07 05:02:49,523 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 62 states. [2021-01-07 05:02:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:02:57,249 INFO L93 Difference]: Finished difference Result 114 states and 115 transitions. [2021-01-07 05:02:57,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-01-07 05:02:57,250 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 110 [2021-01-07 05:02:57,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:02:57,252 INFO L225 Difference]: With dead ends: 114 [2021-01-07 05:02:57,252 INFO L226 Difference]: Without dead ends: 114 [2021-01-07 05:02:57,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=876, Invalid=6096, Unknown=0, NotChecked=0, Total=6972 [2021-01-07 05:02:57,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-01-07 05:02:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2021-01-07 05:02:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-01-07 05:02:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2021-01-07 05:02:57,255 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2021-01-07 05:02:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:02:57,256 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2021-01-07 05:02:57,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2021-01-07 05:02:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2021-01-07 05:02:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-01-07 05:02:57,257 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:02:57,257 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:02:57,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-01-07 05:02:57,470 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:02:57,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:02:57,471 INFO L82 PathProgramCache]: Analyzing trace with hash 758830605, now seen corresponding path program 29 times [2021-01-07 05:02:57,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:02:57,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640832892] [2021-01-07 05:02:57,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:02:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:02:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 18 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:02:59,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640832892] [2021-01-07 05:02:59,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798015954] [2021-01-07 05:02:59,568 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:02:59,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-01-07 05:02:59,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:02:59,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 123 conjunts are in the unsatisfiable core [2021-01-07 05:02:59,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:01,785 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-01-07 05:03:01,786 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:01,795 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:01,797 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. [2021-01-07 05:03:01,797 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2021-01-07 05:03:02,255 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-01-07 05:03:02,257 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:02,259 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:02,260 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:02,260 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-01-07 05:03:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 18 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:02,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:02,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 64 [2021-01-07 05:03:02,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850236048] [2021-01-07 05:03:02,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-01-07 05:03:02,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:02,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-01-07 05:03:02,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3882, Unknown=0, NotChecked=0, Total=4032 [2021-01-07 05:03:02,290 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 64 states. [2021-01-07 05:03:08,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:08,665 INFO L93 Difference]: Finished difference Result 158 states and 159 transitions. [2021-01-07 05:03:08,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-07 05:03:08,667 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 112 [2021-01-07 05:03:08,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:08,668 INFO L225 Difference]: With dead ends: 158 [2021-01-07 05:03:08,668 INFO L226 Difference]: Without dead ends: 120 [2021-01-07 05:03:08,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=385, Invalid=6925, Unknown=0, NotChecked=0, Total=7310 [2021-01-07 05:03:08,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-07 05:03:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-01-07 05:03:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-01-07 05:03:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2021-01-07 05:03:08,671 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 112 [2021-01-07 05:03:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:08,671 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2021-01-07 05:03:08,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2021-01-07 05:03:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2021-01-07 05:03:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-01-07 05:03:08,672 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:03:08,672 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:03:08,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:08,873 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:03:08,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:03:08,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1559890832, now seen corresponding path program 30 times [2021-01-07 05:03:08,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:03:08,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222713535] [2021-01-07 05:03:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:03:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:03:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 496 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:03:11,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222713535] [2021-01-07 05:03:11,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649560157] [2021-01-07 05:03:11,000 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:03:12,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-01-07 05:03:12,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:03:12,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 58 conjunts are in the unsatisfiable core [2021-01-07 05:03:12,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:03:12,633 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:03:12,634 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:12,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:12,643 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:12,643 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:03:12,831 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-01-07 05:03:12,833 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:03:12,836 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:12,837 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:12,837 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2021-01-07 05:03:13,068 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:13,069 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 [2021-01-07 05:03:13,071 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-01-07 05:03:13,087 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:03:13,088 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:03:13,088 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:23 [2021-01-07 05:03:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2021-01-07 05:03:13,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:03:13,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 6] total 45 [2021-01-07 05:03:13,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927077299] [2021-01-07 05:03:13,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-01-07 05:03:13,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:03:13,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-01-07 05:03:13,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1789, Unknown=0, NotChecked=0, Total=2070 [2021-01-07 05:03:13,338 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 46 states. [2021-01-07 05:03:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:03:18,078 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2021-01-07 05:03:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-01-07 05:03:18,079 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 116 [2021-01-07 05:03:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:03:18,080 INFO L225 Difference]: With dead ends: 117 [2021-01-07 05:03:18,080 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:03:18,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=906, Invalid=3650, Unknown=0, NotChecked=0, Total=4556 [2021-01-07 05:03:18,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:03:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:03:18,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:03:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:03:18,082 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2021-01-07 05:03:18,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:03:18,082 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:03:18,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2021-01-07 05:03:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:03:18,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:03:18,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-01-07 05:03:18,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:03:18 BoogieIcfgContainer [2021-01-07 05:03:18,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:03:18,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:03:18,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:03:18,294 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:03:18,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:00:18" (3/4) ... [2021-01-07 05:03:18,302 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:03:18,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-07 05:03:18,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-01-07 05:03:18,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-01-07 05:03:18,362 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/array-memsafety/cstrlen-alloca-2.i-witness.graphml [2021-01-07 05:03:18,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:03:18,364 INFO L168 Benchmark]: Toolchain (without parser) took 181304.82 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 132.5 MB in the beginning and 242.6 MB in the end (delta: -110.1 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. [2021-01-07 05:03:18,364 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 132.2 MB in the end (delta: 81.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:03:18,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.36 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 111.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:03:18,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.90 ms. Allocated memory is still 157.3 MB. Free memory was 111.9 MB in the beginning and 110.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:03:18,366 INFO L168 Benchmark]: Boogie Preprocessor took 28.53 ms. Allocated memory is still 157.3 MB. Free memory was 110.1 MB in the beginning and 108.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:03:18,366 INFO L168 Benchmark]: RCFGBuilder took 568.55 ms. Allocated memory is still 157.3 MB. Free memory was 108.7 MB in the beginning and 125.8 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. [2021-01-07 05:03:18,368 INFO L168 Benchmark]: TraceAbstraction took 179942.16 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 125.3 MB in the beginning and 245.2 MB in the end (delta: -119.9 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:03:18,368 INFO L168 Benchmark]: Witness Printer took 68.67 ms. Allocated memory is still 327.2 MB. Free memory was 245.2 MB in the beginning and 242.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:03:18,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 132.2 MB in the end (delta: 81.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 638.36 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 111.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.90 ms. Allocated memory is still 157.3 MB. Free memory was 111.9 MB in the beginning and 110.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.53 ms. Allocated memory is still 157.3 MB. Free memory was 110.1 MB in the beginning and 108.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 568.55 ms. Allocated memory is still 157.3 MB. Free memory was 108.7 MB in the beginning and 125.8 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 179942.16 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 125.3 MB in the beginning and 245.2 MB in the end (delta: -119.9 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. * Witness Printer took 68.67 ms. Allocated memory is still 327.2 MB. Free memory was 245.2 MB in the beginning and 242.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 516]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 516]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 179.8s, OverallIterations: 40, TraceHistogramMax: 18, AutomataDifference: 104.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 540 SDtfs, 4947 SDslu, 11616 SDs, 0 SdLazy, 49718 SolverSat, 3187 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 45.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3206 GetRequests, 1474 SyntacticMatches, 17 SemanticMatches, 1715 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13841 ImplicationChecksByTransitivity, 95.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 40 MinimizatonAttempts, 129 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 61.0s InterpolantComputationTime, 3940 NumberOfCodeBlocks, 3886 NumberOfCodeBlocksAsserted, 234 NumberOfCheckSat, 3869 ConstructedInterpolants, 105 QuantifiedInterpolants, 2861933 SizeOfPredicates, 327 NumberOfNonLiveVariables, 7466 ConjunctsInSsa, 2044 ConjunctsInUnsatCore, 71 InterpolantComputations, 9 PerfectInterpolantSequences, 5997/19860 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...