/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/memsafety-ext3/getNumbers2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:47:08,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:47:08,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:47:08,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:47:08,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:47:08,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:47:08,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:47:08,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:47:08,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:47:08,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:47:08,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:47:08,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:47:08,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:47:08,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:47:08,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:47:08,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:47:08,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:47:08,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:47:08,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:47:08,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:47:08,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:47:08,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:47:08,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:47:08,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:47:08,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 05:47:08,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 05:47:08,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 05:47:08,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 05:47:08,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 05:47:08,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 05:47:08,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:47:08,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:47:08,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:47:08,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:47:08,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:47:08,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:47:08,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:47:08,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:47:08,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:47:08,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:47:08,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:47:08,491 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 05:47:08,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:47:08,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:47:08,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:47:08,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:47:08,544 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:47:08,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:47:08,545 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:47:08,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:47:08,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:47:08,545 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:47:08,546 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:47:08,547 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:47:08,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:47:08,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:47:08,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:47:08,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:47:08,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:47:08,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:47:08,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:47:08,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:47:08,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:47:08,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:47:08,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:47:08,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:47:08,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:47:08,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:47:09,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:47:09,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:47:09,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:47:09,010 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:47:09,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2021-01-07 05:47:09,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e0ec110d4/7623078a939041cd9e55e8290571e38e/FLAG0d02488c4 [2021-01-07 05:47:09,780 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:47:09,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2021-01-07 05:47:09,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e0ec110d4/7623078a939041cd9e55e8290571e38e/FLAG0d02488c4 [2021-01-07 05:47:10,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e0ec110d4/7623078a939041cd9e55e8290571e38e [2021-01-07 05:47:10,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:47:10,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:47:10,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:47:10,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:47:10,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:47:10,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5497c17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10, skipping insertion in model container [2021-01-07 05:47:10,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:47:10,180 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~array~0,GLOBAL],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~numbers2~0,],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~numbers~1,],base],StructAccessExpression[IdentifierExpression[~numbers~1,],offset]]] [2021-01-07 05:47:10,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:47:10,352 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#array~0,GLOBAL],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#array~0,GLOBAL],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#numbers2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#numbers2~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~1,]]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~numbers~1,],base],StructAccessExpression[IdentifierExpression[~numbers~1,],offset]]] [2021-01-07 05:47:10,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:47:10,391 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:47:10,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10 WrapperNode [2021-01-07 05:47:10,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:47:10,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:47:10,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:47:10,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:47:10,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:47:10,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:47:10,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:47:10,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:47:10,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (1/1) ... [2021-01-07 05:47:10,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:47:10,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:47:10,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:47:10,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:47:10,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (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 05:47:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:47:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:47:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:47:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:47:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:47:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:47:11,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:47:11,119 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-07 05:47:11,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:47:11 BoogieIcfgContainer [2021-01-07 05:47:11,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:47:11,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:47:11,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:47:11,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:47:11,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:47:10" (1/3) ... [2021-01-07 05:47:11,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cc82c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:47:11, skipping insertion in model container [2021-01-07 05:47:11,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:47:10" (2/3) ... [2021-01-07 05:47:11,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cc82c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:47:11, skipping insertion in model container [2021-01-07 05:47:11,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:47:11" (3/3) ... [2021-01-07 05:47:11,137 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers2.c [2021-01-07 05:47:11,163 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:47:11,168 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2021-01-07 05:47:11,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-01-07 05:47:11,230 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:47:11,230 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:47:11,230 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:47:11,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:47:11,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:47:11,231 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:47:11,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:47:11,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:47:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-01-07 05:47:11,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:47:11,258 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:11,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:47:11,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:11,267 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-01-07 05:47:11,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:11,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534931145] [2021-01-07 05:47:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:11,473 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 05:47:11,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534931145] [2021-01-07 05:47:11,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:47:11,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-07 05:47:11,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640657691] [2021-01-07 05:47:11,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:47:11,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:11,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:47:11,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:47:11,507 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2021-01-07 05:47:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:11,587 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-01-07 05:47:11,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:47:11,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:47:11,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:11,600 INFO L225 Difference]: With dead ends: 27 [2021-01-07 05:47:11,601 INFO L226 Difference]: Without dead ends: 25 [2021-01-07 05:47:11,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 05:47:11,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-07 05:47:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-01-07 05:47:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-07 05:47:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-01-07 05:47:11,642 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 4 [2021-01-07 05:47:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:11,643 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-01-07 05:47:11,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:47:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-01-07 05:47:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:47:11,644 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:11,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:47:11,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:47:11,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:11,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:11,646 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-01-07 05:47:11,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:11,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447972948] [2021-01-07 05:47:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:11,763 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 05:47:11,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447972948] [2021-01-07 05:47:11,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:47:11,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:47:11,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10128598] [2021-01-07 05:47:11,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:47:11,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:11,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:47:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:47:11,769 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 4 states. [2021-01-07 05:47:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:11,886 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-01-07 05:47:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:47:11,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2021-01-07 05:47:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:11,889 INFO L225 Difference]: With dead ends: 28 [2021-01-07 05:47:11,889 INFO L226 Difference]: Without dead ends: 28 [2021-01-07 05:47:11,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 05:47:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-07 05:47:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-01-07 05:47:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-07 05:47:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-01-07 05:47:11,900 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 4 [2021-01-07 05:47:11,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:11,901 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-01-07 05:47:11,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:47:11,901 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-01-07 05:47:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:47:11,902 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:11,902 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-01-07 05:47:11,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:47:11,903 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:11,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:11,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2021-01-07 05:47:11,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:11,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657099667] [2021-01-07 05:47:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:12,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657099667] [2021-01-07 05:47:12,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708772668] [2021-01-07 05:47:12,032 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 05:47:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:12,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:47:12,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:12,194 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:12,198 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:12,213 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:12,215 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:12,215 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:47:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:12,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:12,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-01-07 05:47:12,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331197462] [2021-01-07 05:47:12,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:47:12,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:12,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:47:12,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:47:12,299 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2021-01-07 05:47:12,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:12,516 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-01-07 05:47:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:47:12,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2021-01-07 05:47:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:12,518 INFO L225 Difference]: With dead ends: 31 [2021-01-07 05:47:12,518 INFO L226 Difference]: Without dead ends: 31 [2021-01-07 05:47:12,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:47:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-01-07 05:47:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-01-07 05:47:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-07 05:47:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-01-07 05:47:12,524 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 7 [2021-01-07 05:47:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:12,524 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-01-07 05:47:12,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:47:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-01-07 05:47:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:47:12,526 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:12,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:12,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:47:12,740 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:12,742 INFO L82 PathProgramCache]: Analyzing trace with hash -118451422, now seen corresponding path program 1 times [2021-01-07 05:47:12,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:12,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066504148] [2021-01-07 05:47:12,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:12,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066504148] [2021-01-07 05:47:12,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941535307] [2021-01-07 05:47:12,838 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 05:47:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:12,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:47:12,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:12,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:12,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 05:47:12,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686930109] [2021-01-07 05:47:12,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:47:12,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:12,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:47:12,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:47:12,979 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-01-07 05:47:13,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:13,033 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-01-07 05:47:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:47:13,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2021-01-07 05:47:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:13,035 INFO L225 Difference]: With dead ends: 36 [2021-01-07 05:47:13,035 INFO L226 Difference]: Without dead ends: 36 [2021-01-07 05:47:13,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:47:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-07 05:47:13,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2021-01-07 05:47:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-07 05:47:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-01-07 05:47:13,041 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 16 [2021-01-07 05:47:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:13,041 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-01-07 05:47:13,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:47:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-01-07 05:47:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:47:13,055 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:13,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:13,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:13,269 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:13,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:13,271 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 2 times [2021-01-07 05:47:13,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:13,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536955576] [2021-01-07 05:47:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:13,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536955576] [2021-01-07 05:47:13,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610808753] [2021-01-07 05:47:13,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:13,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:47:13,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:13,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-07 05:47:13,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:13,499 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:13,501 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:13,509 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:13,510 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:13,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:47:13,635 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:13,635 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:47:13,639 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:13,684 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2021-01-07 05:47:13,688 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 05:47:13,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:17 [2021-01-07 05:47:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-01-07 05:47:13,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:47:13,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2021-01-07 05:47:13,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950369054] [2021-01-07 05:47:13,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:47:13,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:13,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:47:13,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:47:13,797 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 5 states. [2021-01-07 05:47:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:13,954 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-01-07 05:47:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:47:13,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-01-07 05:47:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:13,956 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:47:13,956 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:47:13,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:47:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:47:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2021-01-07 05:47:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-07 05:47:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-01-07 05:47:13,961 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 19 [2021-01-07 05:47:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:13,962 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-01-07 05:47:13,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:47:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-01-07 05:47:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:47:13,963 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:13,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:14,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:14,177 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:14,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:14,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2129139287, now seen corresponding path program 1 times [2021-01-07 05:47:14,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:14,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601666541] [2021-01-07 05:47:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:14,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601666541] [2021-01-07 05:47:14,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863568294] [2021-01-07 05:47:14,271 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 05:47:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:14,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:47:14,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:14,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:14,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-07 05:47:14,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392356248] [2021-01-07 05:47:14,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:47:14,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:14,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:47:14,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:47:14,401 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 8 states. [2021-01-07 05:47:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:14,459 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-01-07 05:47:14,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:47:14,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-07 05:47:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:14,461 INFO L225 Difference]: With dead ends: 41 [2021-01-07 05:47:14,461 INFO L226 Difference]: Without dead ends: 41 [2021-01-07 05:47:14,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:47:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-07 05:47:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-01-07 05:47:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-07 05:47:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-01-07 05:47:14,466 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 19 [2021-01-07 05:47:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:14,467 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-01-07 05:47:14,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:47:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-01-07 05:47:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:47:14,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:14,468 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:14,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:14,683 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash -622418399, now seen corresponding path program 2 times [2021-01-07 05:47:14,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:14,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134713240] [2021-01-07 05:47:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:14,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134713240] [2021-01-07 05:47:14,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118389900] [2021-01-07 05:47:14,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:14,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:47:14,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:14,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:47:14,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:14,912 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:14,913 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 05:47:14,915 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:14,974 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2021-01-07 05:47:14,975 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:14,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:15 [2021-01-07 05:47:15,106 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-07 05:47:15,189 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:15,190 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 58 [2021-01-07 05:47:15,196 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:15,228 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:15,228 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:47:15,233 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:15,334 INFO L625 ElimStorePlain]: treesize reduction 42, result has 45.5 percent of original size [2021-01-07 05:47:15,343 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:47:15,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2021-01-07 05:47:15,348 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:35 [2021-01-07 05:47:15,353 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:47:15,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 05:47:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:47:15,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:47:15,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2021-01-07 05:47:15,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783211464] [2021-01-07 05:47:15,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:47:15,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:15,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:47:15,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:47:15,462 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 5 states. [2021-01-07 05:47:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:15,635 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-01-07 05:47:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:47:15,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-01-07 05:47:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:15,636 INFO L225 Difference]: With dead ends: 38 [2021-01-07 05:47:15,636 INFO L226 Difference]: Without dead ends: 38 [2021-01-07 05:47:15,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:47:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-01-07 05:47:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-01-07 05:47:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-01-07 05:47:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-01-07 05:47:15,641 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 22 [2021-01-07 05:47:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:15,642 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-01-07 05:47:15,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:47:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-01-07 05:47:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:47:15,643 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:15,643 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:15,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-07 05:47:15,857 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:15,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:15,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2115101182, now seen corresponding path program 1 times [2021-01-07 05:47:15,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:15,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597844736] [2021-01-07 05:47:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-01-07 05:47:15,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597844736] [2021-01-07 05:47:15,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:47:15,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:47:15,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892037733] [2021-01-07 05:47:15,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:47:15,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:15,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:47:15,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:47:15,917 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 3 states. [2021-01-07 05:47:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:15,949 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-01-07 05:47:15,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:47:15,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-01-07 05:47:15,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:15,950 INFO L225 Difference]: With dead ends: 37 [2021-01-07 05:47:15,950 INFO L226 Difference]: Without dead ends: 37 [2021-01-07 05:47:15,951 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 05:47:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-07 05:47:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-07 05:47:15,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-07 05:47:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-01-07 05:47:15,955 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 23 [2021-01-07 05:47:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:15,955 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-01-07 05:47:15,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:47:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-01-07 05:47:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:47:15,956 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:15,956 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:15,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:47:15,957 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:15,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2115101181, now seen corresponding path program 1 times [2021-01-07 05:47:15,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:15,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026745240] [2021-01-07 05:47:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:16,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026745240] [2021-01-07 05:47:16,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136155811] [2021-01-07 05:47:16,093 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 05:47:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:16,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:47:16,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:16,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:16,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-07 05:47:16,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433472090] [2021-01-07 05:47:16,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:47:16,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:16,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:47:16,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:47:16,268 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2021-01-07 05:47:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:16,332 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-01-07 05:47:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:47:16,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2021-01-07 05:47:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:16,333 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:47:16,334 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:47:16,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:47:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:47:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-01-07 05:47:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-07 05:47:16,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-01-07 05:47:16,339 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 23 [2021-01-07 05:47:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:16,339 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-01-07 05:47:16,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:47:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-01-07 05:47:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:47:16,340 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:16,340 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:16,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:16,548 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1533419909, now seen corresponding path program 2 times [2021-01-07 05:47:16,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:16,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792762377] [2021-01-07 05:47:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:47:16,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792762377] [2021-01-07 05:47:16,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100938086] [2021-01-07 05:47:16,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:16,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:47:16,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:16,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:47:16,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:16,859 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:16,861 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:16,872 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:16,873 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:16,873 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:47:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-01-07 05:47:16,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:47:16,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2021-01-07 05:47:16,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784566338] [2021-01-07 05:47:16,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:47:16,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:16,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:47:16,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:47:16,904 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 3 states. [2021-01-07 05:47:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:16,957 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-01-07 05:47:16,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:47:16,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-01-07 05:47:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:16,959 INFO L225 Difference]: With dead ends: 43 [2021-01-07 05:47:16,959 INFO L226 Difference]: Without dead ends: 43 [2021-01-07 05:47:16,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:47:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-01-07 05:47:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-01-07 05:47:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-07 05:47:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-01-07 05:47:16,963 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 26 [2021-01-07 05:47:16,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:16,964 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-01-07 05:47:16,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:47:16,964 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-01-07 05:47:16,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 05:47:16,965 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:16,965 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:17,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-07 05:47:17,179 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:17,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:17,180 INFO L82 PathProgramCache]: Analyzing trace with hash -281744994, now seen corresponding path program 1 times [2021-01-07 05:47:17,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:17,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406011667] [2021-01-07 05:47:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:47:17,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406011667] [2021-01-07 05:47:17,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002362337] [2021-01-07 05:47:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:17,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:47:17,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:47:17,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:17,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-07 05:47:17,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561216823] [2021-01-07 05:47:17,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:47:17,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:17,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:47:17,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:47:17,512 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 10 states. [2021-01-07 05:47:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:17,583 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2021-01-07 05:47:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:47:17,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2021-01-07 05:47:17,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:17,585 INFO L225 Difference]: With dead ends: 46 [2021-01-07 05:47:17,585 INFO L226 Difference]: Without dead ends: 46 [2021-01-07 05:47:17,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:47:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-07 05:47:17,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-01-07 05:47:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-07 05:47:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-01-07 05:47:17,589 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 30 [2021-01-07 05:47:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:17,590 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-01-07 05:47:17,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:47:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-01-07 05:47:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:47:17,591 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:17,591 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:17,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-07 05:47:17,808 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:17,809 INFO L82 PathProgramCache]: Analyzing trace with hash 425603622, now seen corresponding path program 2 times [2021-01-07 05:47:17,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:17,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879002416] [2021-01-07 05:47:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:47:17,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879002416] [2021-01-07 05:47:17,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77216368] [2021-01-07 05:47:17,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:18,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:47:18,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:18,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:47:18,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:47:18,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:18,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-07 05:47:18,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382174193] [2021-01-07 05:47:18,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:47:18,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:18,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:47:18,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:47:18,162 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 11 states. [2021-01-07 05:47:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:18,245 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-01-07 05:47:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:47:18,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2021-01-07 05:47:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:18,247 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:47:18,248 INFO L226 Difference]: Without dead ends: 49 [2021-01-07 05:47:18,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:47:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-07 05:47:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-01-07 05:47:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:47:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-01-07 05:47:18,252 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 33 [2021-01-07 05:47:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:18,252 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-01-07 05:47:18,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:47:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-01-07 05:47:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-07 05:47:18,254 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:18,254 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:18,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:18,464 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1938668702, now seen corresponding path program 3 times [2021-01-07 05:47:18,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:18,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425727608] [2021-01-07 05:47:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-07 05:47:18,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425727608] [2021-01-07 05:47:18,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086365504] [2021-01-07 05:47:18,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:18,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-07 05:47:18,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:18,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-07 05:47:18,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:18,735 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:18,737 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:18,745 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:18,746 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:18,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:47:19,020 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:19,021 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 38 [2021-01-07 05:47:19,025 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:19,075 INFO L625 ElimStorePlain]: treesize reduction 14, result has 65.0 percent of original size [2021-01-07 05:47:19,077 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 05:47:19,078 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2021-01-07 05:47:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-01-07 05:47:19,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:19,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 18 [2021-01-07 05:47:19,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472404710] [2021-01-07 05:47:19,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-07 05:47:19,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:19,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-07 05:47:19,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:47:19,211 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 18 states. [2021-01-07 05:47:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:20,246 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2021-01-07 05:47:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-07 05:47:20,247 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2021-01-07 05:47:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:20,247 INFO L225 Difference]: With dead ends: 61 [2021-01-07 05:47:20,247 INFO L226 Difference]: Without dead ends: 61 [2021-01-07 05:47:20,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2021-01-07 05:47:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-07 05:47:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2021-01-07 05:47:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-07 05:47:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-01-07 05:47:20,253 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 36 [2021-01-07 05:47:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:20,254 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-01-07 05:47:20,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-07 05:47:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-01-07 05:47:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-07 05:47:20,255 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:20,255 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:20,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:20,470 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:20,471 INFO L82 PathProgramCache]: Analyzing trace with hash -20077561, now seen corresponding path program 1 times [2021-01-07 05:47:20,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:20,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102094014] [2021-01-07 05:47:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:20,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102094014] [2021-01-07 05:47:20,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659819339] [2021-01-07 05:47:20,558 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 05:47:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:20,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:47:20,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:20,714 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:20,715 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:20,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:20,727 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:20,727 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:47:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:20,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:20,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-01-07 05:47:20,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662856484] [2021-01-07 05:47:20,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:47:20,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:20,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:47:20,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:47:20,756 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 4 states. [2021-01-07 05:47:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:20,817 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2021-01-07 05:47:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:47:20,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2021-01-07 05:47:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:20,819 INFO L225 Difference]: With dead ends: 60 [2021-01-07 05:47:20,819 INFO L226 Difference]: Without dead ends: 60 [2021-01-07 05:47:20,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:47:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-07 05:47:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-01-07 05:47:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-07 05:47:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-01-07 05:47:20,824 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 43 [2021-01-07 05:47:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:20,824 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-01-07 05:47:20,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:47:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-01-07 05:47:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-07 05:47:20,825 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:20,825 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:21,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 05:47:21,039 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:21,040 INFO L82 PathProgramCache]: Analyzing trace with hash -676132566, now seen corresponding path program 4 times [2021-01-07 05:47:21,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:21,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901622066] [2021-01-07 05:47:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-07 05:47:21,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901622066] [2021-01-07 05:47:21,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227207584] [2021-01-07 05:47:21,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:21,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:47:21,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:21,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-07 05:47:21,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:21,479 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:21,480 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:21,488 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:21,490 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:21,490 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:47:21,657 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:21,658 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:47:21,660 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:21,694 INFO L625 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2021-01-07 05:47:21,696 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 05:47:21,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:17 [2021-01-07 05:47:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:21,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:21,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-01-07 05:47:21,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346990889] [2021-01-07 05:47:21,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:47:21,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:21,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:47:21,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:47:21,852 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 13 states. [2021-01-07 05:47:22,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:22,326 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2021-01-07 05:47:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:47:22,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2021-01-07 05:47:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:22,328 INFO L225 Difference]: With dead ends: 66 [2021-01-07 05:47:22,328 INFO L226 Difference]: Without dead ends: 66 [2021-01-07 05:47:22,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-01-07 05:47:22,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-07 05:47:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-01-07 05:47:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:47:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-01-07 05:47:22,342 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 47 [2021-01-07 05:47:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:22,342 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-01-07 05:47:22,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:47:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-01-07 05:47:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-07 05:47:22,344 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:22,344 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:22,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 05:47:22,556 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash 514726907, now seen corresponding path program 2 times [2021-01-07 05:47:22,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:22,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772183188] [2021-01-07 05:47:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:22,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772183188] [2021-01-07 05:47:22,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904597448] [2021-01-07 05:47:22,663 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 05:47:22,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:47:22,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:22,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:47:22,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:22,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:22,826 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:22,838 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:22,842 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:22,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:47:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-01-07 05:47:23,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:23,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-01-07 05:47:23,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768129277] [2021-01-07 05:47:23,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:47:23,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:23,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:47:23,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:47:23,006 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 10 states. [2021-01-07 05:47:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:23,433 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-01-07 05:47:23,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:47:23,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2021-01-07 05:47:23,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:23,435 INFO L225 Difference]: With dead ends: 67 [2021-01-07 05:47:23,435 INFO L226 Difference]: Without dead ends: 67 [2021-01-07 05:47:23,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-01-07 05:47:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-07 05:47:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2021-01-07 05:47:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:47:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-01-07 05:47:23,440 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 48 [2021-01-07 05:47:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:23,440 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-01-07 05:47:23,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:47:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-01-07 05:47:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-07 05:47:23,441 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:23,441 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:23,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 05:47:23,655 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:23,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1578211554, now seen corresponding path program 5 times [2021-01-07 05:47:23,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:23,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123450151] [2021-01-07 05:47:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-07 05:47:23,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123450151] [2021-01-07 05:47:23,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155394930] [2021-01-07 05:47:23,919 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:24,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-07 05:47:24,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:24,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-07 05:47:24,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:24,129 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:24,130 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:24,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:24,138 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:24,138 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:47:24,284 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:24,284 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:47:24,291 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:24,341 INFO L625 ElimStorePlain]: treesize reduction 14, result has 58.8 percent of original size [2021-01-07 05:47:24,343 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 05:47:24,343 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:20 [2021-01-07 05:47:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:24,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:24,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-01-07 05:47:24,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877545242] [2021-01-07 05:47:24,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:47:24,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:24,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:47:24,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:47:24,536 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 13 states. [2021-01-07 05:47:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:25,079 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2021-01-07 05:47:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:47:25,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2021-01-07 05:47:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:25,081 INFO L225 Difference]: With dead ends: 69 [2021-01-07 05:47:25,081 INFO L226 Difference]: Without dead ends: 69 [2021-01-07 05:47:25,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-01-07 05:47:25,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-01-07 05:47:25,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2021-01-07 05:47:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-07 05:47:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-01-07 05:47:25,085 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 52 [2021-01-07 05:47:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:25,086 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-01-07 05:47:25,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:47:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-01-07 05:47:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-07 05:47:25,087 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:25,087 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:25,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:25,303 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:25,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:25,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1470341546, now seen corresponding path program 6 times [2021-01-07 05:47:25,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:25,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780245695] [2021-01-07 05:47:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 19 proven. 38 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-01-07 05:47:25,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780245695] [2021-01-07 05:47:25,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642889465] [2021-01-07 05:47:25,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:25,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-01-07 05:47:25,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:25,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-07 05:47:25,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:25,753 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 05:47:25,754 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:25,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:25,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:47:25,764 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 05:47:25,912 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:47:25,912 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 05:47:25,918 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:47:25,949 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2021-01-07 05:47:25,951 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 05:47:25,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2021-01-07 05:47:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-01-07 05:47:26,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:47:26,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2021-01-07 05:47:26,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472313883] [2021-01-07 05:47:26,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:47:26,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:26,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:47:26,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:47:26,187 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 8 states. [2021-01-07 05:47:26,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:26,504 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2021-01-07 05:47:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:47:26,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2021-01-07 05:47:26,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:26,506 INFO L225 Difference]: With dead ends: 65 [2021-01-07 05:47:26,506 INFO L226 Difference]: Without dead ends: 65 [2021-01-07 05:47:26,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:47:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-01-07 05:47:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-01-07 05:47:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:47:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-01-07 05:47:26,516 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 57 [2021-01-07 05:47:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:26,516 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-01-07 05:47:26,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:47:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-01-07 05:47:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-07 05:47:26,517 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:26,517 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:26,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-01-07 05:47:26,733 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:26,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:26,734 INFO L82 PathProgramCache]: Analyzing trace with hash -46063240, now seen corresponding path program 1 times [2021-01-07 05:47:26,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:26,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589455403] [2021-01-07 05:47:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:26,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589455403] [2021-01-07 05:47:26,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530459703] [2021-01-07 05:47:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:26,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:47:26,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:27,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:27,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-07 05:47:27,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81596447] [2021-01-07 05:47:27,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:47:27,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:27,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:47:27,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:47:27,048 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 8 states. [2021-01-07 05:47:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:27,119 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2021-01-07 05:47:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:47:27,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2021-01-07 05:47:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:27,120 INFO L225 Difference]: With dead ends: 73 [2021-01-07 05:47:27,120 INFO L226 Difference]: Without dead ends: 73 [2021-01-07 05:47:27,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:47:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-07 05:47:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2021-01-07 05:47:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-01-07 05:47:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-01-07 05:47:27,123 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 59 [2021-01-07 05:47:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:27,123 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-01-07 05:47:27,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:47:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-01-07 05:47:27,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-07 05:47:27,124 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:27,125 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:27,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:27,341 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:27,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:27,342 INFO L82 PathProgramCache]: Analyzing trace with hash 893071724, now seen corresponding path program 2 times [2021-01-07 05:47:27,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:27,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422955916] [2021-01-07 05:47:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:27,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422955916] [2021-01-07 05:47:27,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390926008] [2021-01-07 05:47:27,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:27,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:47:27,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:27,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:47:27,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:27,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:27,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-07 05:47:27,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541518476] [2021-01-07 05:47:27,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:47:27,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:27,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:47:27,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:47:27,680 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 9 states. [2021-01-07 05:47:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:27,764 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-01-07 05:47:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:47:27,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2021-01-07 05:47:27,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:27,766 INFO L225 Difference]: With dead ends: 78 [2021-01-07 05:47:27,767 INFO L226 Difference]: Without dead ends: 78 [2021-01-07 05:47:27,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:47:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-07 05:47:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2021-01-07 05:47:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-07 05:47:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2021-01-07 05:47:27,770 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 64 [2021-01-07 05:47:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:27,770 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2021-01-07 05:47:27,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:47:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2021-01-07 05:47:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-07 05:47:27,771 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:27,771 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:27,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:27,985 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:27,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:27,986 INFO L82 PathProgramCache]: Analyzing trace with hash 579926520, now seen corresponding path program 3 times [2021-01-07 05:47:27,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:27,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019274246] [2021-01-07 05:47:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:28,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019274246] [2021-01-07 05:47:28,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631989483] [2021-01-07 05:47:28,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:28,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:47:28,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:28,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:47:28,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:28,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:28,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-07 05:47:28,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423448868] [2021-01-07 05:47:28,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:47:28,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:47:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:47:28,499 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 10 states. [2021-01-07 05:47:28,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:28,594 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-01-07 05:47:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:47:28,595 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2021-01-07 05:47:28,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:28,595 INFO L225 Difference]: With dead ends: 83 [2021-01-07 05:47:28,596 INFO L226 Difference]: Without dead ends: 83 [2021-01-07 05:47:28,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:47:28,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-07 05:47:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2021-01-07 05:47:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-01-07 05:47:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-01-07 05:47:28,601 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2021-01-07 05:47:28,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:28,602 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-01-07 05:47:28,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:47:28,602 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-01-07 05:47:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-07 05:47:28,603 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:28,603 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:28,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-01-07 05:47:28,818 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:28,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:28,819 INFO L82 PathProgramCache]: Analyzing trace with hash 2055121132, now seen corresponding path program 4 times [2021-01-07 05:47:28,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:28,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587821947] [2021-01-07 05:47:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:28,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587821947] [2021-01-07 05:47:28,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406587765] [2021-01-07 05:47:28,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:29,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:47:29,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:29,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:47:29,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:29,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:29,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-07 05:47:29,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969527894] [2021-01-07 05:47:29,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:47:29,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:29,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:47:29,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:47:29,508 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 11 states. [2021-01-07 05:47:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:29,631 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2021-01-07 05:47:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:47:29,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2021-01-07 05:47:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:29,635 INFO L225 Difference]: With dead ends: 88 [2021-01-07 05:47:29,635 INFO L226 Difference]: Without dead ends: 88 [2021-01-07 05:47:29,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:47:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-07 05:47:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-01-07 05:47:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-01-07 05:47:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-01-07 05:47:29,638 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 74 [2021-01-07 05:47:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:29,638 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-01-07 05:47:29,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:47:29,638 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-01-07 05:47:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-01-07 05:47:29,639 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:29,639 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:29,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:29,853 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:29,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1706282376, now seen corresponding path program 5 times [2021-01-07 05:47:29,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:29,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82360922] [2021-01-07 05:47:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:30,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82360922] [2021-01-07 05:47:30,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095494134] [2021-01-07 05:47:30,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:30,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-01-07 05:47:30,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:30,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:47:30,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:31,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:31,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-07 05:47:31,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711769714] [2021-01-07 05:47:31,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:47:31,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:31,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:47:31,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:47:31,131 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 12 states. [2021-01-07 05:47:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:31,263 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2021-01-07 05:47:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:47:31,264 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2021-01-07 05:47:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:31,265 INFO L225 Difference]: With dead ends: 93 [2021-01-07 05:47:31,265 INFO L226 Difference]: Without dead ends: 93 [2021-01-07 05:47:31,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:47:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-07 05:47:31,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2021-01-07 05:47:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-07 05:47:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-01-07 05:47:31,269 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 79 [2021-01-07 05:47:31,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:31,269 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-01-07 05:47:31,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:47:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-01-07 05:47:31,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-07 05:47:31,270 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:31,270 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:31,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-01-07 05:47:31,484 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:31,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:31,485 INFO L82 PathProgramCache]: Analyzing trace with hash 158515308, now seen corresponding path program 6 times [2021-01-07 05:47:31,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:31,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281208164] [2021-01-07 05:47:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:47:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:31,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281208164] [2021-01-07 05:47:31,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046205448] [2021-01-07 05:47:31,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:47:32,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-01-07 05:47:32,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:47:32,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:47:32,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:47:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-01-07 05:47:32,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:47:32,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-07 05:47:32,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391718212] [2021-01-07 05:47:32,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:47:32,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:47:32,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:47:32,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:47:32,498 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 13 states. [2021-01-07 05:47:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:47:32,643 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-01-07 05:47:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:47:32,644 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2021-01-07 05:47:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:47:32,645 INFO L225 Difference]: With dead ends: 94 [2021-01-07 05:47:32,645 INFO L226 Difference]: Without dead ends: 94 [2021-01-07 05:47:32,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:47:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-01-07 05:47:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-01-07 05:47:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-01-07 05:47:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-01-07 05:47:32,648 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 84 [2021-01-07 05:47:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:47:32,648 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-01-07 05:47:32,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:47:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-01-07 05:47:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-01-07 05:47:32,649 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:47:32,649 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:47:32,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-01-07 05:47:32,863 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:47:32,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:47:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1572522744, now seen corresponding path program 7 times [2021-01-07 05:47:32,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:47:32,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933723935] [2021-01-07 05:47:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:47:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:47:32,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:47:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:47:32,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:47:33,001 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-07 05:47:33,002 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-07 05:47:33,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-07 05:47:33,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:47:33 BoogieIcfgContainer [2021-01-07 05:47:33,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:47:33,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:47:33,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:47:33,109 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:47:33,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:47:11" (3/4) ... [2021-01-07 05:47:33,113 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-07 05:47:33,197 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/memsafety-ext3/getNumbers2.c-witness.graphml [2021-01-07 05:47:33,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:47:33,198 INFO L168 Benchmark]: Toolchain (without parser) took 23058.84 ms. Allocated memory was 159.4 MB in the beginning and 237.0 MB in the end (delta: 77.6 MB). Free memory was 134.4 MB in the beginning and 183.1 MB in the end (delta: -48.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:47:33,199 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:47:33,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.30 ms. Allocated memory is still 159.4 MB. Free memory was 134.3 MB in the beginning and 125.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:47:33,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.37 ms. Allocated memory is still 159.4 MB. Free memory was 124.8 MB in the beginning and 123.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:47:33,200 INFO L168 Benchmark]: Boogie Preprocessor took 28.52 ms. Allocated memory is still 159.4 MB. Free memory was 123.4 MB in the beginning and 122.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:47:33,200 INFO L168 Benchmark]: RCFGBuilder took 655.41 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 141.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:47:33,201 INFO L168 Benchmark]: TraceAbstraction took 21984.67 ms. Allocated memory was 159.4 MB in the beginning and 237.0 MB in the end (delta: 77.6 MB). Free memory was 140.9 MB in the beginning and 187.8 MB in the end (delta: -46.9 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2021-01-07 05:47:33,201 INFO L168 Benchmark]: Witness Printer took 88.69 ms. Allocated memory is still 237.0 MB. Free memory was 187.8 MB in the beginning and 183.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-01-07 05:47:33,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.30 ms. Allocated memory is still 159.4 MB. Free memory was 134.3 MB in the beginning and 125.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.37 ms. Allocated memory is still 159.4 MB. Free memory was 124.8 MB in the beginning and 123.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.52 ms. Allocated memory is still 159.4 MB. Free memory was 123.4 MB in the beginning and 122.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 655.41 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 141.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21984.67 ms. Allocated memory was 159.4 MB in the beginning and 237.0 MB in the end (delta: 77.6 MB). Free memory was 140.9 MB in the beginning and 187.8 MB in the end (delta: -46.9 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. * Witness Printer took 88.69 ms. Allocated memory is still 237.0 MB. Free memory was 187.8 MB in the beginning and 183.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1] int array[10]; VAL [array={11:0}] [L5] int i = 0; VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND TRUE i < 10 VAL [array={11:0}] [L6] array[i] = i VAL [array={11:0}] [L5] ++i VAL [array={11:0}] [L5] COND FALSE !(i < 10) VAL [array={11:0}] [L9] return array; VAL [array={11:0}] [L13] int* numbers = getNumbers(); [L15] int numbers2[10]; [L17] int i = 0; VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND TRUE i < 10 VAL [array={11:0}] [L18] EXPR numbers[i] VAL [array={11:0}] [L18] numbers2[i] = numbers[i] VAL [array={11:0}] [L17] ++i VAL [array={11:0}] [L17] COND FALSE !(i < 10) VAL [array={11:0}] [L21] return numbers2; [L21] return numbers2; VAL [array={11:0}] [L25] int *numbers = getNumbers2(); [L26] numbers[0] = 100 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.7s, OverallIterations: 25, TraceHistogramMax: 10, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 400 SDtfs, 920 SDslu, 1401 SDs, 0 SdLazy, 1217 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1099 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=24, 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, 24 MinimizatonAttempts, 55 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 1934 NumberOfCodeBlocks, 1777 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 1800 ConstructedInterpolants, 2 QuantifiedInterpolants, 424007 SizeOfPredicates, 32 NumberOfNonLiveVariables, 2554 ConjunctsInSsa, 208 ConjunctsInUnsatCore, 45 InterpolantComputations, 7 PerfectInterpolantSequences, 3482/5423 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 incorrect! Received shutdown request...