/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/ldv-memsafety/ArraysOfVariableLength5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:21:51,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:21:51,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:21:51,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:21:51,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:21:51,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:21:51,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:21:51,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:21:51,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:21:51,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:21:51,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:21:51,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:21:51,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:21:51,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:21:51,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:21:51,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:21:51,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:21:51,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:21:51,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:21:51,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:21:51,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:21:51,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:21:51,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:21:51,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:21:51,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 05:21:51,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 05:21:51,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 05:21:51,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 05:21:51,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 05:21:51,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 05:21:51,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:21:51,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:21:51,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:21:51,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:21:51,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:21:51,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:21:51,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:21:51,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:21:51,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:21:51,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:21:51,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:21:51,374 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 05:21:51,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:21:51,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:21:51,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:21:51,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:21:51,443 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:21:51,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:21:51,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:21:51,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:21:51,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:21:51,444 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:21:51,446 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:21:51,447 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:21:51,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:21:51,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:21:51,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:21:51,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:21:51,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:21:51,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:21:51,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:21:51,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:21:51,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:21:51,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:21:51,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:21:51,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:21:51,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:21:51,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:21:51,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:21:51,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:21:51,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:21:51,977 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:21:51,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2021-01-07 05:21:52,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ed98a98a0/04495c848af04751bc5023b51508c476/FLAG0e182c86c [2021-01-07 05:21:52,813 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:21:52,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2021-01-07 05:21:52,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ed98a98a0/04495c848af04751bc5023b51508c476/FLAG0e182c86c [2021-01-07 05:21:53,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ed98a98a0/04495c848af04751bc5023b51508c476 [2021-01-07 05:21:53,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:21:53,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:21:53,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:21:53,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:21:53,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:21:53,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf90185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53, skipping insertion in model container [2021-01-07 05:21:53,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:21:53,213 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~1,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~b~0,],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: VariableLHS[~i~1,] [2021-01-07 05:21:53,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:21:53,427 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~1,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#b~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~1,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~1,] [2021-01-07 05:21:53,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:21:53,470 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:21:53,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53 WrapperNode [2021-01-07 05:21:53,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:21:53,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:21:53,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:21:53,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:21:53,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:21:53,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:21:53,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:21:53,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:21:53,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (1/1) ... [2021-01-07 05:21:53,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:21:53,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:21:53,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:21:53,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:21:53,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (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 05:21:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:21:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:21:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:21:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:21:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:21:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:21:54,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:21:54,253 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-07 05:21:54,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:21:54 BoogieIcfgContainer [2021-01-07 05:21:54,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:21:54,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:21:54,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:21:54,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:21:54,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:21:53" (1/3) ... [2021-01-07 05:21:54,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b64188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:21:54, skipping insertion in model container [2021-01-07 05:21:54,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:21:53" (2/3) ... [2021-01-07 05:21:54,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b64188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:21:54, skipping insertion in model container [2021-01-07 05:21:54,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:21:54" (3/3) ... [2021-01-07 05:21:54,269 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5.c [2021-01-07 05:21:54,277 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:21:54,284 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-01-07 05:21:54,315 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-01-07 05:21:54,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:21:54,353 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:21:54,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:21:54,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:21:54,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:21:54,355 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:21:54,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:21:54,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:21:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-01-07 05:21:54,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 05:21:54,400 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:54,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 05:21:54,401 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:54,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:54,413 INFO L82 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2021-01-07 05:21:54,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:54,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991922934] [2021-01-07 05:21:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:54,705 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 05:21:54,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991922934] [2021-01-07 05:21:54,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:21:54,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:21:54,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154316954] [2021-01-07 05:21:54,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:21:54,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:54,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:21:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:21:54,745 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2021-01-07 05:21:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:54,899 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2021-01-07 05:21:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:21:54,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-01-07 05:21:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:54,915 INFO L225 Difference]: With dead ends: 76 [2021-01-07 05:21:54,915 INFO L226 Difference]: Without dead ends: 68 [2021-01-07 05:21:54,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:21:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-01-07 05:21:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 32. [2021-01-07 05:21:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-01-07 05:21:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-01-07 05:21:54,969 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 5 [2021-01-07 05:21:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:54,970 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-01-07 05:21:54,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:21:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-01-07 05:21:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:21:54,971 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:54,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:54,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:21:54,972 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:54,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:54,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2021-01-07 05:21:54,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:54,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309319998] [2021-01-07 05:21:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:55,067 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 05:21:55,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309319998] [2021-01-07 05:21:55,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:21:55,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:21:55,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178924726] [2021-01-07 05:21:55,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:21:55,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:55,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:21:55,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:21:55,078 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 3 states. [2021-01-07 05:21:55,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:55,123 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-01-07 05:21:55,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:21:55,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-07 05:21:55,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:55,125 INFO L225 Difference]: With dead ends: 30 [2021-01-07 05:21:55,125 INFO L226 Difference]: Without dead ends: 30 [2021-01-07 05:21:55,126 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 05:21:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-07 05:21:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-01-07 05:21:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-07 05:21:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-01-07 05:21:55,136 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 7 [2021-01-07 05:21:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:55,136 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-01-07 05:21:55,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:21:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-01-07 05:21:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:21:55,137 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:55,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:55,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:21:55,139 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:55,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1809810360, now seen corresponding path program 1 times [2021-01-07 05:21:55,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:55,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170997189] [2021-01-07 05:21:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:55,221 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 05:21:55,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170997189] [2021-01-07 05:21:55,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:21:55,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:21:55,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047315032] [2021-01-07 05:21:55,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:21:55,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:55,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:21:55,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:21:55,224 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2021-01-07 05:21:55,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:55,282 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-01-07 05:21:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:21:55,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:21:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:55,284 INFO L225 Difference]: With dead ends: 35 [2021-01-07 05:21:55,285 INFO L226 Difference]: Without dead ends: 35 [2021-01-07 05:21:55,285 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 05:21:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-07 05:21:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-01-07 05:21:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-07 05:21:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-01-07 05:21:55,291 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 7 [2021-01-07 05:21:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:55,291 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-01-07 05:21:55,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:21:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-01-07 05:21:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-07 05:21:55,293 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:55,293 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:55,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:21:55,293 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:55,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:55,294 INFO L82 PathProgramCache]: Analyzing trace with hash -352773613, now seen corresponding path program 1 times [2021-01-07 05:21:55,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:55,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480091599] [2021-01-07 05:21:55,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:21:55,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480091599] [2021-01-07 05:21:55,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:21:55,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:21:55,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835107817] [2021-01-07 05:21:55,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:21:55,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:55,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:21:55,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:21:55,373 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2021-01-07 05:21:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:55,407 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-01-07 05:21:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:21:55,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-01-07 05:21:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:55,410 INFO L225 Difference]: With dead ends: 58 [2021-01-07 05:21:55,410 INFO L226 Difference]: Without dead ends: 58 [2021-01-07 05:21:55,410 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 05:21:55,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-01-07 05:21:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 35. [2021-01-07 05:21:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-07 05:21:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-01-07 05:21:55,417 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2021-01-07 05:21:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:55,417 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-01-07 05:21:55,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:21:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-01-07 05:21:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:21:55,418 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:55,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:55,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:21:55,419 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:55,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1948884381, now seen corresponding path program 1 times [2021-01-07 05:21:55,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:55,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035425611] [2021-01-07 05:21:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:21:55,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035425611] [2021-01-07 05:21:55,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692550826] [2021-01-07 05:21:55,471 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 05:21:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:55,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-07 05:21:55,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:21:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:21:55,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:21:55,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 05:21:55,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106126717] [2021-01-07 05:21:55,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:21:55,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:55,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:21:55,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:21:55,608 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2021-01-07 05:21:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:55,695 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2021-01-07 05:21:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:21:55,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-07 05:21:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:55,700 INFO L225 Difference]: With dead ends: 69 [2021-01-07 05:21:55,700 INFO L226 Difference]: Without dead ends: 69 [2021-01-07 05:21:55,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:21:55,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-07 05:21:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 42. [2021-01-07 05:21:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-07 05:21:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-01-07 05:21:55,721 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 13 [2021-01-07 05:21:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:55,724 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-01-07 05:21:55,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:21:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-01-07 05:21:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:21:55,726 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:55,727 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:55,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:55,943 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1948919938, now seen corresponding path program 1 times [2021-01-07 05:21:55,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:55,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688341581] [2021-01-07 05:21:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:21:56,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688341581] [2021-01-07 05:21:56,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130795603] [2021-01-07 05:21:56,035 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 05:21:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:56,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:21:56,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:21:56,165 INFO L348 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-01-07 05:21:56,165 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:21:56,168 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:21:56,173 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:21:56,177 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:21:56,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2021-01-07 05:21:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:21:56,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:21:56,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-01-07 05:21:56,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969734183] [2021-01-07 05:21:56,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:21:56,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:56,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:21:56,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:21:56,228 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 4 states. [2021-01-07 05:21:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:56,266 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-01-07 05:21:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:21:56,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-07 05:21:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:56,267 INFO L225 Difference]: With dead ends: 41 [2021-01-07 05:21:56,268 INFO L226 Difference]: Without dead ends: 41 [2021-01-07 05:21:56,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 1 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 05:21:56,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-07 05:21:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-07 05:21:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-07 05:21:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-01-07 05:21:56,274 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 13 [2021-01-07 05:21:56,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:56,274 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-01-07 05:21:56,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:21:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-01-07 05:21:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:21:56,275 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:56,275 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:56,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:56,491 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:56,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:56,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1948919939, now seen corresponding path program 1 times [2021-01-07 05:21:56,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:56,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958871123] [2021-01-07 05:21:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:21:56,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958871123] [2021-01-07 05:21:56,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987655079] [2021-01-07 05:21:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:56,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-01-07 05:21:56,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:21:56,754 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:21:56,755 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:21:56,770 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:21:56,796 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:21:56,805 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:21:56,807 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2021-01-07 05:21:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:21:56,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:21:56,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-01-07 05:21:56,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446518057] [2021-01-07 05:21:56,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:21:56,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:56,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:21:56,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:21:56,893 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2021-01-07 05:21:56,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:56,987 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2021-01-07 05:21:56,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:21:56,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-07 05:21:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:56,993 INFO L225 Difference]: With dead ends: 66 [2021-01-07 05:21:56,994 INFO L226 Difference]: Without dead ends: 66 [2021-01-07 05:21:56,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 05:21:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-07 05:21:57,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 42. [2021-01-07 05:21:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-07 05:21:57,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-01-07 05:21:57,018 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 13 [2021-01-07 05:21:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:57,019 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-01-07 05:21:57,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:21:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-01-07 05:21:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:21:57,020 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:57,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:57,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:57,236 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:57,238 INFO L82 PathProgramCache]: Analyzing trace with hash 286926307, now seen corresponding path program 1 times [2021-01-07 05:21:57,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:57,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036877034] [2021-01-07 05:21:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:21:57,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036877034] [2021-01-07 05:21:57,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454619217] [2021-01-07 05:21:57,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:57,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:21:57,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:21:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:21:57,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:21:57,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-01-07 05:21:57,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658425063] [2021-01-07 05:21:57,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:21:57,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:57,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:21:57,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:21:57,429 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2021-01-07 05:21:57,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:57,600 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-01-07 05:21:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:21:57,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-01-07 05:21:57,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:57,601 INFO L225 Difference]: With dead ends: 48 [2021-01-07 05:21:57,602 INFO L226 Difference]: Without dead ends: 48 [2021-01-07 05:21:57,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:21:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-07 05:21:57,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-01-07 05:21:57,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-07 05:21:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-01-07 05:21:57,606 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 14 [2021-01-07 05:21:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:57,607 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-01-07 05:21:57,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:21:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-01-07 05:21:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-07 05:21:57,608 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:57,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:57,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:57,823 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:57,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1980019516, now seen corresponding path program 1 times [2021-01-07 05:21:57,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:57,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818849164] [2021-01-07 05:21:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:21:57,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818849164] [2021-01-07 05:21:57,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431672284] [2021-01-07 05:21:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:58,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:21:58,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:21:58,278 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 05:21:58,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:21:58,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-01-07 05:21:58,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291942932] [2021-01-07 05:21:58,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:21:58,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:58,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:21:58,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:21:58,282 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 9 states. [2021-01-07 05:21:58,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:58,612 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2021-01-07 05:21:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:21:58,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2021-01-07 05:21:58,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:58,622 INFO L225 Difference]: With dead ends: 92 [2021-01-07 05:21:58,622 INFO L226 Difference]: Without dead ends: 92 [2021-01-07 05:21:58,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:21:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-07 05:21:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 48. [2021-01-07 05:21:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:21:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-01-07 05:21:58,631 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 17 [2021-01-07 05:21:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:58,632 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-01-07 05:21:58,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:21:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-01-07 05:21:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:21:58,636 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:58,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:58,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:58,850 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:58,851 INFO L82 PathProgramCache]: Analyzing trace with hash -128290732, now seen corresponding path program 1 times [2021-01-07 05:21:58,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:58,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941287111] [2021-01-07 05:21:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:21:58,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941287111] [2021-01-07 05:21:58,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412417361] [2021-01-07 05:21:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:59,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-07 05:21:59,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:21:59,064 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_11|], 1=[|v_#valid_21|]} [2021-01-07 05:21:59,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:21:59,071 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:21:59,073 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:21:59,091 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:21:59,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:21:59,102 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-01-07 05:21:59,105 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:21:59,130 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:21:59,132 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:21:59,133 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2021-01-07 05:21:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:21:59,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:21:59,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-01-07 05:21:59,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733954442] [2021-01-07 05:21:59,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:21:59,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:59,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:21:59,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:21:59,412 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 8 states. [2021-01-07 05:21:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:21:59,548 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-01-07 05:21:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:21:59,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-07 05:21:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:21:59,551 INFO L225 Difference]: With dead ends: 53 [2021-01-07 05:21:59,551 INFO L226 Difference]: Without dead ends: 53 [2021-01-07 05:21:59,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:21:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-01-07 05:21:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-01-07 05:21:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-07 05:21:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-01-07 05:21:59,576 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 19 [2021-01-07 05:21:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:21:59,576 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-01-07 05:21:59,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:21:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-01-07 05:21:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:21:59,580 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:21:59,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:21:59,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:21:59,782 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:21:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:21:59,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1206934215, now seen corresponding path program 1 times [2021-01-07 05:21:59,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:21:59,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794915369] [2021-01-07 05:21:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:21:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:21:59,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794915369] [2021-01-07 05:21:59,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945933264] [2021-01-07 05:21:59,876 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 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 05:21:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:21:59,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-07 05:21:59,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:21:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:21:59,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:21:59,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-01-07 05:21:59,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515942747] [2021-01-07 05:21:59,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:21:59,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:21:59,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:21:59,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:21:59,993 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 8 states. [2021-01-07 05:22:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:00,117 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-01-07 05:22:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:22:00,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-01-07 05:22:00,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:00,119 INFO L225 Difference]: With dead ends: 88 [2021-01-07 05:22:00,119 INFO L226 Difference]: Without dead ends: 88 [2021-01-07 05:22:00,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:22:00,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-07 05:22:00,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2021-01-07 05:22:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-07 05:22:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2021-01-07 05:22:00,124 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 25 [2021-01-07 05:22:00,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:00,124 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2021-01-07 05:22:00,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:22:00,124 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2021-01-07 05:22:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-07 05:22:00,125 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:00,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-01-07 05:22:00,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:00,339 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:00,340 INFO L82 PathProgramCache]: Analyzing trace with hash -702798240, now seen corresponding path program 2 times [2021-01-07 05:22:00,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:00,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340457676] [2021-01-07 05:22:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-07 05:22:00,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340457676] [2021-01-07 05:22:00,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702847715] [2021-01-07 05:22:00,428 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 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 05:22:00,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:22:00,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:22:00,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:22:00,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:22:00,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:22:00,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7] total 8 [2021-01-07 05:22:00,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203194612] [2021-01-07 05:22:00,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:22:00,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:00,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:22:00,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:22:00,625 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 9 states. [2021-01-07 05:22:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:01,045 INFO L93 Difference]: Finished difference Result 178 states and 188 transitions. [2021-01-07 05:22:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 05:22:01,045 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2021-01-07 05:22:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:01,047 INFO L225 Difference]: With dead ends: 178 [2021-01-07 05:22:01,047 INFO L226 Difference]: Without dead ends: 178 [2021-01-07 05:22:01,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:22:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-01-07 05:22:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 70. [2021-01-07 05:22:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-07 05:22:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2021-01-07 05:22:01,061 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 29 [2021-01-07 05:22:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:01,062 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2021-01-07 05:22:01,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:22:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2021-01-07 05:22:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:22:01,066 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:01,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-01-07 05:22:01,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:22:01,280 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:01,281 INFO L82 PathProgramCache]: Analyzing trace with hash -311908906, now seen corresponding path program 1 times [2021-01-07 05:22:01,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:01,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672157662] [2021-01-07 05:22:01,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-01-07 05:22:01,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672157662] [2021-01-07 05:22:01,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693373189] [2021-01-07 05:22:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:01,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-07 05:22:01,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:01,497 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:22:01,498 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-01-07 05:22:01,500 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:22:01,522 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2021-01-07 05:22:01,528 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:22:01,528 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2021-01-07 05:22:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-07 05:22:01,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:22:01,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-01-07 05:22:01,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214645527] [2021-01-07 05:22:01,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:22:01,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:01,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:22:01,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:22:01,617 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand 7 states. [2021-01-07 05:22:01,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:01,786 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2021-01-07 05:22:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:22:01,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-01-07 05:22:01,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:01,789 INFO L225 Difference]: With dead ends: 135 [2021-01-07 05:22:01,789 INFO L226 Difference]: Without dead ends: 135 [2021-01-07 05:22:01,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:22:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-01-07 05:22:01,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 72. [2021-01-07 05:22:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-01-07 05:22:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2021-01-07 05:22:01,794 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 30 [2021-01-07 05:22:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:01,797 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2021-01-07 05:22:01,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:22:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2021-01-07 05:22:01,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-07 05:22:01,804 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:01,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-01-07 05:22:02,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:02,023 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:02,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1079291152, now seen corresponding path program 2 times [2021-01-07 05:22:02,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:02,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953256180] [2021-01-07 05:22:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:22:02,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953256180] [2021-01-07 05:22:02,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742212233] [2021-01-07 05:22:02,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:02,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:22:02,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:22:02,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:22:02,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:02,225 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_22|]} [2021-01-07 05:22:02,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:22:02,233 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:22:02,237 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:22:02,247 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:22:02,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:22:02,256 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-01-07 05:22:02,258 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:22:02,267 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:22:02,269 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:22:02,270 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2021-01-07 05:22:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:22:02,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:22:02,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-01-07 05:22:02,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920356075] [2021-01-07 05:22:02,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:22:02,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:02,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:22:02,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:22:02,585 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 6 states. [2021-01-07 05:22:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:02,708 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2021-01-07 05:22:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:22:02,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2021-01-07 05:22:02,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:02,712 INFO L225 Difference]: With dead ends: 73 [2021-01-07 05:22:02,713 INFO L226 Difference]: Without dead ends: 73 [2021-01-07 05:22:02,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:22:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-07 05:22:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-01-07 05:22:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-07 05:22:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-01-07 05:22:02,719 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 31 [2021-01-07 05:22:02,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:02,719 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-01-07 05:22:02,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:22:02,719 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-01-07 05:22:02,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-07 05:22:02,720 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:02,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:22:02,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:02,935 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:02,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:02,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1980079665, now seen corresponding path program 1 times [2021-01-07 05:22:02,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:02,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694657404] [2021-01-07 05:22:02,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:22:03,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694657404] [2021-01-07 05:22:03,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535792370] [2021-01-07 05:22:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:03,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:22:03,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:22:03,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:22:03,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-01-07 05:22:03,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192817397] [2021-01-07 05:22:03,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:22:03,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:03,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:22:03,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:22:03,190 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 11 states. [2021-01-07 05:22:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:03,590 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2021-01-07 05:22:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-07 05:22:03,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2021-01-07 05:22:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:03,593 INFO L225 Difference]: With dead ends: 128 [2021-01-07 05:22:03,593 INFO L226 Difference]: Without dead ends: 128 [2021-01-07 05:22:03,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:22:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-01-07 05:22:03,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 86. [2021-01-07 05:22:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-07 05:22:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-01-07 05:22:03,598 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 40 [2021-01-07 05:22:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:03,599 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-01-07 05:22:03,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:22:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-01-07 05:22:03,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-07 05:22:03,600 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:03,600 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2021-01-07 05:22:03,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 05:22:03,815 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:03,816 INFO L82 PathProgramCache]: Analyzing trace with hash 190094419, now seen corresponding path program 3 times [2021-01-07 05:22:03,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:03,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230699590] [2021-01-07 05:22:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 13 proven. 111 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-07 05:22:03,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230699590] [2021-01-07 05:22:03,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659955423] [2021-01-07 05:22:03,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:04,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:22:04,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:22:04,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:22:04,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-01-07 05:22:04,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:22:04,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2021-01-07 05:22:04,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695258691] [2021-01-07 05:22:04,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:22:04,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:04,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:22:04,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:22:04,200 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 14 states. [2021-01-07 05:22:04,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:04,883 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2021-01-07 05:22:04,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-07 05:22:04,884 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2021-01-07 05:22:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:04,885 INFO L225 Difference]: With dead ends: 121 [2021-01-07 05:22:04,885 INFO L226 Difference]: Without dead ends: 121 [2021-01-07 05:22:04,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2021-01-07 05:22:04,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-01-07 05:22:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2021-01-07 05:22:04,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-07 05:22:04,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-01-07 05:22:04,894 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 56 [2021-01-07 05:22:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:04,896 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-01-07 05:22:04,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:22:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-01-07 05:22:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-07 05:22:04,899 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:04,899 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:22:05,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 05:22:05,116 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:05,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:05,117 INFO L82 PathProgramCache]: Analyzing trace with hash 139155595, now seen corresponding path program 2 times [2021-01-07 05:22:05,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:05,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391367963] [2021-01-07 05:22:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:22:05,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391367963] [2021-01-07 05:22:05,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732411575] [2021-01-07 05:22:05,214 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 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 05:22:05,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:22:05,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:22:05,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:22:05,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-01-07 05:22:05,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:22:05,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-01-07 05:22:05,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282920859] [2021-01-07 05:22:05,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:22:05,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:05,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:22:05,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:22:05,448 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand 4 states. [2021-01-07 05:22:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:05,484 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2021-01-07 05:22:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:22:05,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2021-01-07 05:22:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:05,485 INFO L225 Difference]: With dead ends: 94 [2021-01-07 05:22:05,485 INFO L226 Difference]: Without dead ends: 80 [2021-01-07 05:22:05,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:22:05,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-07 05:22:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-01-07 05:22:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-07 05:22:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2021-01-07 05:22:05,489 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 62 [2021-01-07 05:22:05,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:05,490 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2021-01-07 05:22:05,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:22:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2021-01-07 05:22:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-07 05:22:05,491 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:05,491 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:22:05,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-07 05:22:05,705 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash 18978652, now seen corresponding path program 1 times [2021-01-07 05:22:05,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:05,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808964515] [2021-01-07 05:22:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-07 05:22:05,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808964515] [2021-01-07 05:22:05,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206576222] [2021-01-07 05:22:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:05,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:22:05,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 59 proven. 49 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-07 05:22:06,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:22:06,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-01-07 05:22:06,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930381377] [2021-01-07 05:22:06,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:22:06,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:06,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:22:06,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:22:06,099 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 14 states. [2021-01-07 05:22:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:06,514 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2021-01-07 05:22:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:22:06,515 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2021-01-07 05:22:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:06,517 INFO L225 Difference]: With dead ends: 120 [2021-01-07 05:22:06,517 INFO L226 Difference]: Without dead ends: 120 [2021-01-07 05:22:06,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2021-01-07 05:22:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-07 05:22:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2021-01-07 05:22:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-01-07 05:22:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2021-01-07 05:22:06,522 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 63 [2021-01-07 05:22:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:06,523 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2021-01-07 05:22:06,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:22:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2021-01-07 05:22:06,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-01-07 05:22:06,524 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:06,524 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:22:06,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:06,738 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:06,739 INFO L82 PathProgramCache]: Analyzing trace with hash 561224903, now seen corresponding path program 2 times [2021-01-07 05:22:06,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:06,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230467012] [2021-01-07 05:22:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-01-07 05:22:06,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230467012] [2021-01-07 05:22:06,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136653137] [2021-01-07 05:22:06,853 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 05:22:06,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:22:06,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:22:06,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 05:22:06,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 144 proven. 130 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:22:07,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:22:07,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2021-01-07 05:22:07,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713285389] [2021-01-07 05:22:07,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-07 05:22:07,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:07,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-07 05:22:07,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:22:07,205 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 17 states. [2021-01-07 05:22:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:07,877 INFO L93 Difference]: Finished difference Result 161 states and 164 transitions. [2021-01-07 05:22:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-01-07 05:22:07,878 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 90 [2021-01-07 05:22:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:07,879 INFO L225 Difference]: With dead ends: 161 [2021-01-07 05:22:07,879 INFO L226 Difference]: Without dead ends: 161 [2021-01-07 05:22:07,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 05:22:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-01-07 05:22:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2021-01-07 05:22:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-01-07 05:22:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2021-01-07 05:22:07,886 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 90 [2021-01-07 05:22:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:07,886 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2021-01-07 05:22:07,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-07 05:22:07,886 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2021-01-07 05:22:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-01-07 05:22:07,887 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:22:07,888 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:22:08,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:08,094 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:22:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:22:08,094 INFO L82 PathProgramCache]: Analyzing trace with hash -926083349, now seen corresponding path program 3 times [2021-01-07 05:22:08,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:22:08,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32545496] [2021-01-07 05:22:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:22:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:22:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 556 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-01-07 05:22:08,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32545496] [2021-01-07 05:22:08,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094941121] [2021-01-07 05:22:08,264 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 05:22:08,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:22:08,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:22:08,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:22:08,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:22:08,354 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_14|], 1=[|v_#valid_25|]} [2021-01-07 05:22:08,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:22:08,360 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-01-07 05:22:08,361 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:22:08,371 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:22:08,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 05:22:08,377 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-01-07 05:22:08,379 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:22:08,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:22:08,388 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 05:22:08,389 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2021-01-07 05:22:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-01-07 05:22:09,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:22:09,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-01-07 05:22:09,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636650499] [2021-01-07 05:22:09,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:22:09,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:22:09,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:22:09,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:22:09,112 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 6 states. [2021-01-07 05:22:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:22:09,167 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2021-01-07 05:22:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:22:09,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2021-01-07 05:22:09,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:22:09,168 INFO L225 Difference]: With dead ends: 122 [2021-01-07 05:22:09,168 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:22:09,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:22:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:22:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:22:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:22:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:22:09,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2021-01-07 05:22:09,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:22:09,170 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:22:09,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:22:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:22:09,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:22:09,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:22:09,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:22:09 BoogieIcfgContainer [2021-01-07 05:22:09,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:22:09,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:22:09,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:22:09,396 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:22:09,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:21:54" (3/4) ... [2021-01-07 05:22:09,402 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:22:09,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-01-07 05:22:09,425 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-07 05:22:09,425 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-01-07 05:22:09,485 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-memsafety/ArraysOfVariableLength5.c-witness.graphml [2021-01-07 05:22:09,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:22:09,487 INFO L168 Benchmark]: Toolchain (without parser) took 16320.44 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 126.4 MB in the beginning and 186.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 52.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:22:09,491 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 96.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:22:09,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 117.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:22:09,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.36 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:22:09,492 INFO L168 Benchmark]: Boogie Preprocessor took 35.82 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 114.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:22:09,496 INFO L168 Benchmark]: RCFGBuilder took 693.99 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 131.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:22:09,496 INFO L168 Benchmark]: TraceAbstraction took 15136.70 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 131.2 MB in the beginning and 189.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. [2021-01-07 05:22:09,497 INFO L168 Benchmark]: Witness Printer took 89.36 ms. Allocated memory is still 262.1 MB. Free memory was 189.2 MB in the beginning and 186.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:22:09,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 96.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 117.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.36 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.82 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 114.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 693.99 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 131.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15136.70 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 131.2 MB in the beginning and 189.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 54.3 MB. Max. memory is 8.0 GB. * Witness Printer took 89.36 ms. Allocated memory is still 262.1 MB. Free memory was 189.2 MB in the beginning and 186.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.0s, OverallIterations: 20, TraceHistogramMax: 14, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 423 SDtfs, 2306 SDslu, 857 SDs, 0 SdLazy, 1828 SolverSat, 341 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 814 GetRequests, 604 SyntacticMatches, 3 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=19, 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, 20 MinimizatonAttempts, 502 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1305 NumberOfCodeBlocks, 1108 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1269 ConstructedInterpolants, 159 QuantifiedInterpolants, 521321 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1965 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 36 InterpolantComputations, 7 PerfectInterpolantSequences, 1465/2934 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...