/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:10:03,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:10:03,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:10:03,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:10:03,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:10:03,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:10:03,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:10:03,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:10:03,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:10:03,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:10:03,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:10:03,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:10:03,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:10:03,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:10:03,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:10:03,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:10:03,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:10:03,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:10:03,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:10:03,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:10:03,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:10:03,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:10:03,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:10:03,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:10:03,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 17:10:03,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 17:10:03,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 17:10:03,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 17:10:03,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 17:10:03,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 17:10:03,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 17:10:03,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 17:10:03,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 17:10:03,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 17:10:03,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 17:10:03,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 17:10:03,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 17:10:03,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 17:10:03,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:10:03,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:10:03,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:10:03,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:10:03,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:10:03,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:10:03,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:10:03,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:10:03,246 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:10:03,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:10:03,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:10:03,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:10:03,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:10:03,247 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:10:03,247 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:10:03,248 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:10:03,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:10:03,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:10:03,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:10:03,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:10:03,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:10:03,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:10:03,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:10:03,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:10:03,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:10:03,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:10:03,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:10:03,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:10:03,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:10:03,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:10:03,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:10:03,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:10:03,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:10:03,658 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:10:03,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2020-12-23 17:10:03,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b995f8778/b27fe51f34664d928bbbfa3d8fa60950/FLAG573c0c97b [2020-12-23 17:10:04,433 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:10:04,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2020-12-23 17:10:04,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b995f8778/b27fe51f34664d928bbbfa3d8fa60950/FLAG573c0c97b [2020-12-23 17:10:04,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b995f8778/b27fe51f34664d928bbbfa3d8fa60950 [2020-12-23 17:10:04,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:10:04,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:10:04,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:10:04,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:10:04,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:10:04,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:10:04" (1/1) ... [2020-12-23 17:10:04,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562267c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:04, skipping insertion in model container [2020-12-23 17:10:04,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:10:04" (1/1) ... [2020-12-23 17:10:04,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:10:04,846 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~1,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~b~0,],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: VariableLHS[~i~1,] [2020-12-23 17:10:05,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:10:05,115 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~1,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#b~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#b~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~1,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~1,] [2020-12-23 17:10:05,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:10:05,164 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:10:05,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05 WrapperNode [2020-12-23 17:10:05,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:10:05,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:10:05,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:10:05,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:10:05,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:10:05,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:10:05,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:10:05,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:10:05,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... [2020-12-23 17:10:05,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:10:05,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:10:05,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:10:05,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:10:05,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:10:05,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 17:10:05,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:10:05,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:10:05,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 17:10:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:10:05,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 17:10:06,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:10:06,035 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 17:10:06,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:10:06 BoogieIcfgContainer [2020-12-23 17:10:06,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:10:06,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:10:06,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:10:06,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:10:06,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:10:04" (1/3) ... [2020-12-23 17:10:06,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e87821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:10:06, skipping insertion in model container [2020-12-23 17:10:06,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:10:05" (2/3) ... [2020-12-23 17:10:06,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e87821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:10:06, skipping insertion in model container [2020-12-23 17:10:06,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:10:06" (3/3) ... [2020-12-23 17:10:06,057 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength.c [2020-12-23 17:10:06,064 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:10:06,069 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-23 17:10:06,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-23 17:10:06,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:10:06,136 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:10:06,136 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:10:06,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:10:06,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:10:06,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:10:06,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:10:06,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:10:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-23 17:10:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 17:10:06,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:06,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 17:10:06,169 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:06,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:06,178 INFO L82 PathProgramCache]: Analyzing trace with hash 28698920, now seen corresponding path program 1 times [2020-12-23 17:10:06,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:06,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323969667] [2020-12-23 17:10:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:06,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323969667] [2020-12-23 17:10:06,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:06,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 17:10:06,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450561858] [2020-12-23 17:10:06,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:10:06,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:06,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:10:06,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:10:06,540 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-12-23 17:10:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:06,724 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-12-23 17:10:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:10:06,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-23 17:10:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:06,739 INFO L225 Difference]: With dead ends: 76 [2020-12-23 17:10:06,740 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 17:10:06,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:06,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 17:10:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 32. [2020-12-23 17:10:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-23 17:10:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-12-23 17:10:06,782 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 5 [2020-12-23 17:10:06,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:06,782 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-12-23 17:10:06,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:10:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-12-23 17:10:06,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:10:06,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:06,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:06,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:10:06,784 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:06,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1809810359, now seen corresponding path program 1 times [2020-12-23 17:10:06,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:06,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852161493] [2020-12-23 17:10:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:06,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852161493] [2020-12-23 17:10:06,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:06,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:10:06,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556438750] [2020-12-23 17:10:06,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:10:06,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:06,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:10:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:10:06,845 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 3 states. [2020-12-23 17:10:06,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:06,894 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-12-23 17:10:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:10:06,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 17:10:06,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:06,896 INFO L225 Difference]: With dead ends: 30 [2020-12-23 17:10:06,896 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 17:10:06,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:10:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 17:10:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-23 17:10:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 17:10:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-12-23 17:10:06,909 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 7 [2020-12-23 17:10:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:06,910 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-12-23 17:10:06,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:10:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-12-23 17:10:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 17:10:06,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:06,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:06,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:10:06,912 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:06,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1809810360, now seen corresponding path program 1 times [2020-12-23 17:10:06,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:06,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364184968] [2020-12-23 17:10:06,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:06,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364184968] [2020-12-23 17:10:06,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:06,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:10:06,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796876423] [2020-12-23 17:10:06,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:10:06,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:06,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:10:06,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:10:06,973 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 3 states. [2020-12-23 17:10:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:07,039 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-12-23 17:10:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:10:07,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 17:10:07,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:07,042 INFO L225 Difference]: With dead ends: 35 [2020-12-23 17:10:07,042 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 17:10:07,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:10:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 17:10:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-23 17:10:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 17:10:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-23 17:10:07,048 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 7 [2020-12-23 17:10:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:07,048 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-23 17:10:07,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:10:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-23 17:10:07,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 17:10:07,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:07,049 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:07,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:10:07,050 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:07,051 INFO L82 PathProgramCache]: Analyzing trace with hash -352773613, now seen corresponding path program 1 times [2020-12-23 17:10:07,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:07,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949475288] [2020-12-23 17:10:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:07,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949475288] [2020-12-23 17:10:07,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183851081] [2020-12-23 17:10:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:07,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 17:10:07,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:07,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:07,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 17:10:07,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396951469] [2020-12-23 17:10:07,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:10:07,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:07,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:10:07,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:10:07,339 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 6 states. [2020-12-23 17:10:07,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:07,590 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-12-23 17:10:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:10:07,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 17:10:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:07,593 INFO L225 Difference]: With dead ends: 74 [2020-12-23 17:10:07,593 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 17:10:07,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:10:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 17:10:07,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 35. [2020-12-23 17:10:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 17:10:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 17:10:07,600 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2020-12-23 17:10:07,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:07,600 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 17:10:07,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:10:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 17:10:07,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 17:10:07,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:07,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:07,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:07,816 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:07,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1948884381, now seen corresponding path program 1 times [2020-12-23 17:10:07,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:07,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549830779] [2020-12-23 17:10:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:07,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549830779] [2020-12-23 17:10:07,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579795963] [2020-12-23 17:10:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:07,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-23 17:10:07,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:08,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:08,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 17:10:08,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671915225] [2020-12-23 17:10:08,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 17:10:08,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:08,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 17:10:08,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:08,041 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-12-23 17:10:08,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:08,142 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-12-23 17:10:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:10:08,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 17:10:08,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:08,143 INFO L225 Difference]: With dead ends: 69 [2020-12-23 17:10:08,144 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 17:10:08,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 17:10:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 42. [2020-12-23 17:10:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 17:10:08,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-12-23 17:10:08,150 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 13 [2020-12-23 17:10:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:08,150 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-12-23 17:10:08,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 17:10:08,151 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-12-23 17:10:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 17:10:08,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:08,151 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:08,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:08,366 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:08,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1948919938, now seen corresponding path program 1 times [2020-12-23 17:10:08,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:08,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522805085] [2020-12-23 17:10:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:08,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522805085] [2020-12-23 17:10:08,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:10:08,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:10:08,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981375531] [2020-12-23 17:10:08,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:10:08,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:08,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:10:08,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:10:08,410 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 4 states. [2020-12-23 17:10:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:08,445 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2020-12-23 17:10:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:10:08,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 17:10:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:08,446 INFO L225 Difference]: With dead ends: 41 [2020-12-23 17:10:08,446 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 17:10:08,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:08,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 17:10:08,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 17:10:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 17:10:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-12-23 17:10:08,451 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 13 [2020-12-23 17:10:08,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:08,452 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-12-23 17:10:08,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:10:08,452 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-12-23 17:10:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 17:10:08,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:08,453 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:08,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:10:08,454 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:08,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1948919939, now seen corresponding path program 1 times [2020-12-23 17:10:08,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:08,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418525686] [2020-12-23 17:10:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:08,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418525686] [2020-12-23 17:10:08,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611334260] [2020-12-23 17:10:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:08,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 17:10:08,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:08,609 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 [2020-12-23 17:10:08,610 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:08,617 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:08,619 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:08,619 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:10:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:08,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:08,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-12-23 17:10:08,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416047179] [2020-12-23 17:10:08,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:10:08,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:08,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:10:08,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 17:10:08,647 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2020-12-23 17:10:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:08,724 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-12-23 17:10:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:10:08,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 17:10:08,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:08,730 INFO L225 Difference]: With dead ends: 66 [2020-12-23 17:10:08,730 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 17:10:08,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 17:10:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 17:10:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 42. [2020-12-23 17:10:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 17:10:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-12-23 17:10:08,750 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 13 [2020-12-23 17:10:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:08,750 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-12-23 17:10:08,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:10:08,751 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-12-23 17:10:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:10:08,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:08,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:08,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:08,970 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash 286926307, now seen corresponding path program 1 times [2020-12-23 17:10:08,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:08,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763925284] [2020-12-23 17:10:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:09,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763925284] [2020-12-23 17:10:09,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817711099] [2020-12-23 17:10:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:09,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 17:10:09,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:09,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:09,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-12-23 17:10:09,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841285113] [2020-12-23 17:10:09,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 17:10:09,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:09,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 17:10:09,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-23 17:10:09,155 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 8 states. [2020-12-23 17:10:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:09,314 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-12-23 17:10:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 17:10:09,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-23 17:10:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:09,316 INFO L225 Difference]: With dead ends: 45 [2020-12-23 17:10:09,316 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 17:10:09,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:09,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 17:10:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2020-12-23 17:10:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 17:10:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-23 17:10:09,321 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 14 [2020-12-23 17:10:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:09,321 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-23 17:10:09,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 17:10:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-23 17:10:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:10:09,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:09,322 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:09,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:09,537 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:09,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1980019516, now seen corresponding path program 1 times [2020-12-23 17:10:09,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:09,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650758474] [2020-12-23 17:10:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:09,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650758474] [2020-12-23 17:10:09,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675171552] [2020-12-23 17:10:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:09,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 17:10:09,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:10:09,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:09,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-23 17:10:09,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984149002] [2020-12-23 17:10:09,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:10:09,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:10:09,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:09,737 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2020-12-23 17:10:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:10,031 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2020-12-23 17:10:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:10:10,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-23 17:10:10,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:10,033 INFO L225 Difference]: With dead ends: 84 [2020-12-23 17:10:10,034 INFO L226 Difference]: Without dead ends: 84 [2020-12-23 17:10:10,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-23 17:10:10,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-23 17:10:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 46. [2020-12-23 17:10:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 17:10:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-12-23 17:10:10,040 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 17 [2020-12-23 17:10:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:10,040 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-12-23 17:10:10,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:10:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-12-23 17:10:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 17:10:10,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:10,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:10,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:10,257 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:10,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1688999147, now seen corresponding path program 1 times [2020-12-23 17:10:10,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:10,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83546202] [2020-12-23 17:10:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:10,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83546202] [2020-12-23 17:10:10,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605132571] [2020-12-23 17:10:10,332 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 [2020-12-23 17:10:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:10,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 17:10:10,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:10,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:10,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-23 17:10:10,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338112196] [2020-12-23 17:10:10,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 17:10:10,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:10,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 17:10:10,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:10:10,434 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 6 states. [2020-12-23 17:10:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:10,490 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2020-12-23 17:10:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 17:10:10,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-23 17:10:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:10,492 INFO L225 Difference]: With dead ends: 83 [2020-12-23 17:10:10,492 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 17:10:10,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-23 17:10:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 17:10:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2020-12-23 17:10:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 17:10:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-12-23 17:10:10,496 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 28 [2020-12-23 17:10:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:10,497 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-12-23 17:10:10,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 17:10:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-12-23 17:10:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 17:10:10,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:10,498 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-23 17:10:10,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:10,714 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:10,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:10,715 INFO L82 PathProgramCache]: Analyzing trace with hash -702798240, now seen corresponding path program 2 times [2020-12-23 17:10:10,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:10,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935193921] [2020-12-23 17:10:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:10,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935193921] [2020-12-23 17:10:10,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955665133] [2020-12-23 17:10:10,805 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 [2020-12-23 17:10:10,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 17:10:10,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:10,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 17:10:10,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:10:10,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:10,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2020-12-23 17:10:10,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513232541] [2020-12-23 17:10:10,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 17:10:10,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:10,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 17:10:10,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:10,948 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 9 states. [2020-12-23 17:10:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:11,252 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-23 17:10:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 17:10:11,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-12-23 17:10:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:11,253 INFO L225 Difference]: With dead ends: 94 [2020-12-23 17:10:11,253 INFO L226 Difference]: Without dead ends: 94 [2020-12-23 17:10:11,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-12-23 17:10:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-23 17:10:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 55. [2020-12-23 17:10:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 17:10:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-12-23 17:10:11,258 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 29 [2020-12-23 17:10:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:11,259 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-12-23 17:10:11,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 17:10:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-12-23 17:10:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 17:10:11,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:11,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-23 17:10:11,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:11,472 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:11,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:11,473 INFO L82 PathProgramCache]: Analyzing trace with hash -311908906, now seen corresponding path program 1 times [2020-12-23 17:10:11,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:11,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982725682] [2020-12-23 17:10:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:10:11,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982725682] [2020-12-23 17:10:11,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110282921] [2020-12-23 17:10:11,637 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 [2020-12-23 17:10:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:11,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 17:10:11,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:11,712 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2020-12-23 17:10:11,712 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:11,717 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:11,717 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:11,718 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:10:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 17:10:11,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:11,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-12-23 17:10:11,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115918417] [2020-12-23 17:10:11,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 17:10:11,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 17:10:11,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 17:10:11,790 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 7 states. [2020-12-23 17:10:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:11,896 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-12-23 17:10:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 17:10:11,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-23 17:10:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:11,898 INFO L225 Difference]: With dead ends: 86 [2020-12-23 17:10:11,898 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 17:10:11,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:11,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 17:10:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 60. [2020-12-23 17:10:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-23 17:10:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-12-23 17:10:11,912 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 30 [2020-12-23 17:10:11,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:11,912 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-12-23 17:10:11,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 17:10:11,913 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-12-23 17:10:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 17:10:11,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:11,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2020-12-23 17:10:12,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 17:10:12,133 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:12,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:12,134 INFO L82 PathProgramCache]: Analyzing trace with hash 777529983, now seen corresponding path program 2 times [2020-12-23 17:10:12,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:12,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695162936] [2020-12-23 17:10:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 17:10:12,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695162936] [2020-12-23 17:10:12,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029477416] [2020-12-23 17:10:12,331 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 [2020-12-23 17:10:12,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 17:10:12,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:12,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 17:10:12,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:12,397 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 [2020-12-23 17:10:12,398 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 17:10:12,402 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 17:10:12,403 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 17:10:12,403 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-23 17:10:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-23 17:10:12,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 17:10:12,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2020-12-23 17:10:12,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005685105] [2020-12-23 17:10:12,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 17:10:12,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:12,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 17:10:12,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 17:10:12,529 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 11 states. [2020-12-23 17:10:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:13,179 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2020-12-23 17:10:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 17:10:13,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-12-23 17:10:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:13,182 INFO L225 Difference]: With dead ends: 138 [2020-12-23 17:10:13,182 INFO L226 Difference]: Without dead ends: 138 [2020-12-23 17:10:13,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=254, Invalid=558, Unknown=0, NotChecked=0, Total=812 [2020-12-23 17:10:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-23 17:10:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 52. [2020-12-23 17:10:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 17:10:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-12-23 17:10:13,189 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 35 [2020-12-23 17:10:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:13,189 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-12-23 17:10:13,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 17:10:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-12-23 17:10:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-23 17:10:13,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:10:13,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:10:13,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:13,404 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 17:10:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:10:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1980079665, now seen corresponding path program 2 times [2020-12-23 17:10:13,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:10:13,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802658657] [2020-12-23 17:10:13,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:10:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:10:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 17:10:13,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802658657] [2020-12-23 17:10:13,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717044324] [2020-12-23 17:10:13,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:13,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 17:10:13,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 17:10:13,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 17:10:13,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 17:10:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-23 17:10:13,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 17:10:13,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2020-12-23 17:10:13,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442427645] [2020-12-23 17:10:13,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 17:10:13,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:10:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 17:10:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:13,645 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 4 states. [2020-12-23 17:10:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:10:13,666 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-12-23 17:10:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 17:10:13,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-12-23 17:10:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:10:13,668 INFO L225 Difference]: With dead ends: 51 [2020-12-23 17:10:13,668 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 17:10:13,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-23 17:10:13,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 17:10:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 17:10:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 17:10:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 17:10:13,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-12-23 17:10:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:10:13,670 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 17:10:13,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 17:10:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 17:10:13,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 17:10:13,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 17:10:13,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:10:13 BoogieIcfgContainer [2020-12-23 17:10:13,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:10:13,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:10:13,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:10:13,891 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:10:13,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:10:06" (3/4) ... [2020-12-23 17:10:13,895 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 17:10:13,906 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-23 17:10:13,906 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 17:10:13,907 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-23 17:10:13,950 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-memsafety/ArraysOfVariableLength.c-witness.graphml [2020-12-23 17:10:13,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:10:13,952 INFO L168 Benchmark]: Toolchain (without parser) took 9146.45 ms. Allocated memory was 152.0 MB in the beginning and 183.5 MB in the end (delta: 31.5 MB). Free memory was 127.6 MB in the beginning and 74.5 MB in the end (delta: 53.1 MB). Peak memory consumption was 85.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:10:13,953 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:10:13,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.89 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 118.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 17:10:13,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.10 ms. Allocated memory is still 152.0 MB. Free memory was 118.2 MB in the beginning and 116.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:10:13,954 INFO L168 Benchmark]: Boogie Preprocessor took 59.14 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:10:13,955 INFO L168 Benchmark]: RCFGBuilder took 749.18 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 133.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-12-23 17:10:13,955 INFO L168 Benchmark]: TraceAbstraction took 7849.46 ms. Allocated memory was 152.0 MB in the beginning and 183.5 MB in the end (delta: 31.5 MB). Free memory was 133.2 MB in the beginning and 77.1 MB in the end (delta: 56.1 MB). Peak memory consumption was 87.6 MB. Max. memory is 8.0 GB. [2020-12-23 17:10:13,956 INFO L168 Benchmark]: Witness Printer took 59.94 ms. Allocated memory is still 183.5 MB. Free memory was 77.1 MB in the beginning and 74.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:10:13,958 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 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 354.89 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 118.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.10 ms. Allocated memory is still 152.0 MB. Free memory was 118.2 MB in the beginning and 116.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.14 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 749.18 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 133.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7849.46 ms. Allocated memory was 152.0 MB in the beginning and 183.5 MB in the end (delta: 31.5 MB). Free memory was 133.2 MB in the beginning and 77.1 MB in the end (delta: 56.1 MB). Peak memory consumption was 87.6 MB. Max. memory is 8.0 GB. * Witness Printer took 59.94 ms. Allocated memory is still 183.5 MB. Free memory was 77.1 MB in the beginning and 74.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 15]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 253 SDtfs, 1247 SDslu, 394 SDs, 0 SdLazy, 948 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 329 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=12, 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, 14 MinimizatonAttempts, 349 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 494 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 470 ConstructedInterpolants, 1 QuantifiedInterpolants, 82164 SizeOfPredicates, 31 NumberOfNonLiveVariables, 830 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 139/306 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...