/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-MemCleanup-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 04:55:42,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 04:55:42,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 04:55:42,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 04:55:42,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 04:55:42,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 04:55:42,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 04:55:42,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 04:55:42,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 04:55:42,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 04:55:42,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 04:55:42,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 04:55:42,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 04:55:42,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 04:55:42,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 04:55:42,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 04:55:42,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 04:55:42,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 04:55:42,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 04:55:42,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 04:55:42,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 04:55:42,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 04:55:42,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 04:55:42,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 04:55:42,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 04:55:42,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 04:55:42,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 04:55:42,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 04:55:42,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 04:55:42,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 04:55:42,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 04:55:42,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 04:55:42,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 04:55:42,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 04:55:42,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 04:55:42,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 04:55:42,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 04:55:42,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 04:55:42,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 04:55:42,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 04:55:42,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 04:55:42,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-64bit-Automizer_Default.epf [2021-01-07 04:55:42,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 04:55:42,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 04:55:42,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 04:55:42,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 04:55:42,940 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 04:55:42,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 04:55:42,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 04:55:42,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 04:55:42,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 04:55:42,941 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 04:55:42,942 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 04:55:42,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 04:55:42,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 04:55:42,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 04:55:42,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 04:55:42,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 04:55:42,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 04:55:42,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 04:55:42,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 04:55:42,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 04:55:42,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 04:55:42,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 04:55:42,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 04:55:42,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 04:55:43,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 04:55:43,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 04:55:43,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 04:55:43,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 04:55:43,380 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 04:55:43,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-01-07 04:55:43,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/132936214/ed328efb6bfc4abeb1779d45684a7215/FLAGc204b3796 [2021-01-07 04:55:44,263 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 04:55:44,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-01-07 04:55:44,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/132936214/ed328efb6bfc4abeb1779d45684a7215/FLAGc204b3796 [2021-01-07 04:55:44,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/132936214/ed328efb6bfc4abeb1779d45684a7215 [2021-01-07 04:55:44,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 04:55:44,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 04:55:44,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 04:55:44,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 04:55:44,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 04:55:44,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 04:55:44" (1/1) ... [2021-01-07 04:55:44,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e80905e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:44, skipping insertion in model container [2021-01-07 04:55:44,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 04:55:44" (1/1) ... [2021-01-07 04:55:44,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 04:55:44,571 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~head~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~head~0,] left hand side expression in assignment: lhs: VariableLHS[~head~1,] left hand side expression in assignment: lhs: VariableLHS[~head~1,] [2021-01-07 04:55:45,003 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-01-07 04:55:45,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 04:55:45,017 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[12],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[24],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new_head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~new_head~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~head~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[16],StructAccessExpression[IdentifierExpression[~head~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~head~0,] left hand side expression in assignment: lhs: VariableLHS[~head~1,] left hand side expression in assignment: lhs: VariableLHS[~head~1,] [2021-01-07 04:55:45,065 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-01-07 04:55:45,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 04:55:45,150 INFO L208 MainTranslator]: Completed translation [2021-01-07 04:55:45,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45 WrapperNode [2021-01-07 04:55:45,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 04:55:45,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 04:55:45,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 04:55:45,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 04:55:45,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 04:55:45,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 04:55:45,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 04:55:45,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 04:55:45,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... [2021-01-07 04:55:45,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 04:55:45,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 04:55:45,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 04:55:45,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 04:55:45,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 04:55:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 04:55:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 04:55:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 04:55:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-01-07 04:55:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 04:55:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-01-07 04:55:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 04:55:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 04:55:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 04:55:45,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 04:55:46,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 04:55:46,224 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-01-07 04:55:46,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 04:55:46 BoogieIcfgContainer [2021-01-07 04:55:46,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 04:55:46,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 04:55:46,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 04:55:46,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 04:55:46,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 04:55:44" (1/3) ... [2021-01-07 04:55:46,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccf9822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 04:55:46, skipping insertion in model container [2021-01-07 04:55:46,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 04:55:45" (2/3) ... [2021-01-07 04:55:46,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ccf9822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 04:55:46, skipping insertion in model container [2021-01-07 04:55:46,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 04:55:46" (3/3) ... [2021-01-07 04:55:46,236 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2021-01-07 04:55:46,242 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 04:55:46,248 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 35 error locations. [2021-01-07 04:55:46,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-01-07 04:55:46,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 04:55:46,295 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 04:55:46,295 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 04:55:46,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 04:55:46,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 04:55:46,296 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 04:55:46,296 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 04:55:46,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 04:55:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2021-01-07 04:55:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 04:55:46,322 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:46,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 04:55:46,324 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash 28699851, now seen corresponding path program 1 times [2021-01-07 04:55:46,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:46,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860073731] [2021-01-07 04:55:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:46,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860073731] [2021-01-07 04:55:46,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:55:46,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 04:55:46,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840509694] [2021-01-07 04:55:46,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:55:46,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:46,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:55:46,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:55:46,570 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2021-01-07 04:55:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:46,798 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2021-01-07 04:55:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:55:46,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-01-07 04:55:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:46,813 INFO L225 Difference]: With dead ends: 144 [2021-01-07 04:55:46,813 INFO L226 Difference]: Without dead ends: 139 [2021-01-07 04:55:46,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:55:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-01-07 04:55:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 80. [2021-01-07 04:55:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-07 04:55:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-01-07 04:55:46,863 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 5 [2021-01-07 04:55:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:46,863 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-01-07 04:55:46,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:55:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-01-07 04:55:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-01-07 04:55:46,864 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:46,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-01-07 04:55:46,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 04:55:46,865 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash 28699852, now seen corresponding path program 1 times [2021-01-07 04:55:46,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:46,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433157335] [2021-01-07 04:55:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:46,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433157335] [2021-01-07 04:55:46,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:55:46,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 04:55:46,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561698871] [2021-01-07 04:55:46,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:55:46,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:46,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:55:46,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:55:46,930 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 3 states. [2021-01-07 04:55:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:47,131 INFO L93 Difference]: Finished difference Result 134 states and 150 transitions. [2021-01-07 04:55:47,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:55:47,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-01-07 04:55:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:47,136 INFO L225 Difference]: With dead ends: 134 [2021-01-07 04:55:47,137 INFO L226 Difference]: Without dead ends: 134 [2021-01-07 04:55:47,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:55:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-01-07 04:55:47,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 75. [2021-01-07 04:55:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-07 04:55:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-01-07 04:55:47,160 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 5 [2021-01-07 04:55:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:47,161 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-01-07 04:55:47,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:55:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-01-07 04:55:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-07 04:55:47,162 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:47,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-07 04:55:47,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 04:55:47,165 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:47,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:47,166 INFO L82 PathProgramCache]: Analyzing trace with hash 889673528, now seen corresponding path program 1 times [2021-01-07 04:55:47,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:47,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278645961] [2021-01-07 04:55:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:47,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278645961] [2021-01-07 04:55:47,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:55:47,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:55:47,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774876384] [2021-01-07 04:55:47,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:55:47,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:47,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:55:47,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:55:47,238 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 3 states. [2021-01-07 04:55:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:47,259 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2021-01-07 04:55:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:55:47,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-01-07 04:55:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:47,261 INFO L225 Difference]: With dead ends: 90 [2021-01-07 04:55:47,262 INFO L226 Difference]: Without dead ends: 90 [2021-01-07 04:55:47,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:55:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-01-07 04:55:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2021-01-07 04:55:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-07 04:55:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2021-01-07 04:55:47,271 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 6 [2021-01-07 04:55:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:47,271 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2021-01-07 04:55:47,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:55:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2021-01-07 04:55:47,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 04:55:47,272 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:47,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:47,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 04:55:47,273 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:47,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:47,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1959623991, now seen corresponding path program 1 times [2021-01-07 04:55:47,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:47,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035661009] [2021-01-07 04:55:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:47,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035661009] [2021-01-07 04:55:47,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:55:47,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 04:55:47,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239721086] [2021-01-07 04:55:47,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 04:55:47,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:47,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 04:55:47,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:55:47,423 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 3 states. [2021-01-07 04:55:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:47,467 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-01-07 04:55:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 04:55:47,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2021-01-07 04:55:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:47,472 INFO L225 Difference]: With dead ends: 87 [2021-01-07 04:55:47,472 INFO L226 Difference]: Without dead ends: 87 [2021-01-07 04:55:47,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 04:55:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-07 04:55:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-01-07 04:55:47,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-07 04:55:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-01-07 04:55:47,482 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 14 [2021-01-07 04:55:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:47,483 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-01-07 04:55:47,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 04:55:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-01-07 04:55:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 04:55:47,484 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:47,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:47,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 04:55:47,485 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:47,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:47,486 INFO L82 PathProgramCache]: Analyzing trace with hash 866232140, now seen corresponding path program 1 times [2021-01-07 04:55:47,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:47,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317713838] [2021-01-07 04:55:47,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:47,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317713838] [2021-01-07 04:55:47,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543603637] [2021-01-07 04:55:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:47,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 04:55:47,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:47,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:47,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-07 04:55:47,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035717119] [2021-01-07 04:55:47,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 04:55:47,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:47,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 04:55:47,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:55:47,766 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 5 states. [2021-01-07 04:55:47,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:47,799 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2021-01-07 04:55:47,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:55:47,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-07 04:55:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:47,801 INFO L225 Difference]: With dead ends: 102 [2021-01-07 04:55:47,802 INFO L226 Difference]: Without dead ends: 102 [2021-01-07 04:55:47,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:55:47,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-01-07 04:55:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2021-01-07 04:55:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-07 04:55:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-01-07 04:55:47,809 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 18 [2021-01-07 04:55:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:47,810 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-01-07 04:55:47,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 04:55:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-01-07 04:55:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 04:55:47,811 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:47,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:48,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:48,025 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:48,026 INFO L82 PathProgramCache]: Analyzing trace with hash 829454667, now seen corresponding path program 1 times [2021-01-07 04:55:48,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:48,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301301431] [2021-01-07 04:55:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:48,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301301431] [2021-01-07 04:55:48,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494106823] [2021-01-07 04:55:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:48,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 04:55:48,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:48,299 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 04:55:48,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:48,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:48,305 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:48,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 04:55:48,357 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:48,358 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 04:55:48,363 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:48,381 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2021-01-07 04:55:48,383 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 04:55:48,384 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2021-01-07 04:55:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:48,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:48,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-01-07 04:55:48,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821812837] [2021-01-07 04:55:48,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 04:55:48,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:48,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 04:55:48,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 04:55:48,418 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 5 states. [2021-01-07 04:55:48,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:48,584 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2021-01-07 04:55:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 04:55:48,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-01-07 04:55:48,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:48,586 INFO L225 Difference]: With dead ends: 119 [2021-01-07 04:55:48,586 INFO L226 Difference]: Without dead ends: 119 [2021-01-07 04:55:48,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-07 04:55:48,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-01-07 04:55:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 87. [2021-01-07 04:55:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-01-07 04:55:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2021-01-07 04:55:48,593 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 26 [2021-01-07 04:55:48,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:48,593 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2021-01-07 04:55:48,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 04:55:48,594 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2021-01-07 04:55:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 04:55:48,595 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:48,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:48,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:48,810 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash 829454668, now seen corresponding path program 1 times [2021-01-07 04:55:48,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:48,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243241617] [2021-01-07 04:55:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:49,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243241617] [2021-01-07 04:55:49,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009091363] [2021-01-07 04:55:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:49,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-07 04:55:49,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:49,143 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 04:55:49,144 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:49,149 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:49,150 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:49,151 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-01-07 04:55:49,212 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:49,213 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2021-01-07 04:55:49,216 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:49,235 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2021-01-07 04:55:49,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 04:55:49,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2021-01-07 04:55:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:49,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:49,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-01-07 04:55:49,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805643153] [2021-01-07 04:55:49,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 04:55:49,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:49,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 04:55:49,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-07 04:55:49,272 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 7 states. [2021-01-07 04:55:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:49,474 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2021-01-07 04:55:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 04:55:49,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-01-07 04:55:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:49,475 INFO L225 Difference]: With dead ends: 118 [2021-01-07 04:55:49,476 INFO L226 Difference]: Without dead ends: 118 [2021-01-07 04:55:49,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-07 04:55:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-01-07 04:55:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2021-01-07 04:55:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-07 04:55:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-01-07 04:55:49,482 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 26 [2021-01-07 04:55:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:49,482 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-01-07 04:55:49,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 04:55:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-01-07 04:55:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-07 04:55:49,483 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:49,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:49,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:49,700 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:49,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1350534816, now seen corresponding path program 2 times [2021-01-07 04:55:49,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:49,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706445024] [2021-01-07 04:55:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:49,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706445024] [2021-01-07 04:55:49,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852766893] [2021-01-07 04:55:49,818 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:49,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 04:55:49,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:55:49,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 04:55:49,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:50,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:50,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-01-07 04:55:50,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828665364] [2021-01-07 04:55:50,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 04:55:50,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:50,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 04:55:50,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-07 04:55:50,003 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 8 states. [2021-01-07 04:55:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:50,171 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2021-01-07 04:55:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 04:55:50,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2021-01-07 04:55:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:50,172 INFO L225 Difference]: With dead ends: 111 [2021-01-07 04:55:50,173 INFO L226 Difference]: Without dead ends: 111 [2021-01-07 04:55:50,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-01-07 04:55:50,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-07 04:55:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-01-07 04:55:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-07 04:55:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2021-01-07 04:55:50,178 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 30 [2021-01-07 04:55:50,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:50,178 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2021-01-07 04:55:50,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 04:55:50,178 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2021-01-07 04:55:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-07 04:55:50,180 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:50,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:50,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:50,397 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:50,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1723802484, now seen corresponding path program 1 times [2021-01-07 04:55:50,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:50,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807385297] [2021-01-07 04:55:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:50,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807385297] [2021-01-07 04:55:50,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192832937] [2021-01-07 04:55:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:50,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 04:55:50,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:50,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:50,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 04:55:50,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953412644] [2021-01-07 04:55:50,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 04:55:50,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:50,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 04:55:50,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 04:55:50,724 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 7 states. [2021-01-07 04:55:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:50,768 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-01-07 04:55:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 04:55:50,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2021-01-07 04:55:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:50,770 INFO L225 Difference]: With dead ends: 124 [2021-01-07 04:55:50,773 INFO L226 Difference]: Without dead ends: 124 [2021-01-07 04:55:50,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 04:55:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-07 04:55:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-01-07 04:55:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-01-07 04:55:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2021-01-07 04:55:50,780 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 44 [2021-01-07 04:55:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:50,781 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-01-07 04:55:50,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 04:55:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2021-01-07 04:55:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-07 04:55:50,786 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:50,786 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:51,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:51,001 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:51,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2030128290, now seen corresponding path program 2 times [2021-01-07 04:55:51,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:51,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147184558] [2021-01-07 04:55:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:51,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147184558] [2021-01-07 04:55:51,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918509635] [2021-01-07 04:55:51,155 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:51,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 04:55:51,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 04:55:51,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 04:55:51,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 04:55:51,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:51,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-07 04:55:51,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860424809] [2021-01-07 04:55:51,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 04:55:51,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 04:55:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 04:55:51,389 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 8 states. [2021-01-07 04:55:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:51,432 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2021-01-07 04:55:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 04:55:51,433 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2021-01-07 04:55:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:51,434 INFO L225 Difference]: With dead ends: 125 [2021-01-07 04:55:51,434 INFO L226 Difference]: Without dead ends: 125 [2021-01-07 04:55:51,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 04:55:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-07 04:55:51,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-01-07 04:55:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-07 04:55:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2021-01-07 04:55:51,439 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 57 [2021-01-07 04:55:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:51,439 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2021-01-07 04:55:51,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 04:55:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2021-01-07 04:55:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-07 04:55:51,442 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:51,442 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:51,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:51,657 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:51,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:51,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1121714636, now seen corresponding path program 3 times [2021-01-07 04:55:51,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:51,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155880157] [2021-01-07 04:55:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-01-07 04:55:51,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155880157] [2021-01-07 04:55:51,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:55:51,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 04:55:51,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905238974] [2021-01-07 04:55:51,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 04:55:51,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:51,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 04:55:51,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 04:55:51,881 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 6 states. [2021-01-07 04:55:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:52,141 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2021-01-07 04:55:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 04:55:52,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2021-01-07 04:55:52,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:52,143 INFO L225 Difference]: With dead ends: 171 [2021-01-07 04:55:52,143 INFO L226 Difference]: Without dead ends: 171 [2021-01-07 04:55:52,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 04:55:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-01-07 04:55:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 152. [2021-01-07 04:55:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2021-01-07 04:55:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2021-01-07 04:55:52,149 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 70 [2021-01-07 04:55:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:52,149 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2021-01-07 04:55:52,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 04:55:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2021-01-07 04:55:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-01-07 04:55:52,151 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:52,151 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:52,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 04:55:52,152 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:52,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:52,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1121714635, now seen corresponding path program 1 times [2021-01-07 04:55:52,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:52,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484564515] [2021-01-07 04:55:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-01-07 04:55:52,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484564515] [2021-01-07 04:55:52,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:55:52,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 04:55:52,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486847405] [2021-01-07 04:55:52,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 04:55:52,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:52,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 04:55:52,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-07 04:55:52,310 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand 6 states. [2021-01-07 04:55:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:52,528 INFO L93 Difference]: Finished difference Result 171 states and 193 transitions. [2021-01-07 04:55:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 04:55:52,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2021-01-07 04:55:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:52,533 INFO L225 Difference]: With dead ends: 171 [2021-01-07 04:55:52,534 INFO L226 Difference]: Without dead ends: 171 [2021-01-07 04:55:52,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 04:55:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-01-07 04:55:52,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 146. [2021-01-07 04:55:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-07 04:55:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 168 transitions. [2021-01-07 04:55:52,544 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 168 transitions. Word has length 70 [2021-01-07 04:55:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:52,544 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 168 transitions. [2021-01-07 04:55:52,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 04:55:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 168 transitions. [2021-01-07 04:55:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-07 04:55:52,548 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:52,548 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:52,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-07 04:55:52,548 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:52,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1909311012, now seen corresponding path program 1 times [2021-01-07 04:55:52,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:52,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074769570] [2021-01-07 04:55:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:52,684 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-01-07 04:55:52,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074769570] [2021-01-07 04:55:52,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 04:55:52,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-07 04:55:52,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588242395] [2021-01-07 04:55:52,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 04:55:52,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:52,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 04:55:52,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-07 04:55:52,688 INFO L87 Difference]: Start difference. First operand 146 states and 168 transitions. Second operand 7 states. [2021-01-07 04:55:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:52,854 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2021-01-07 04:55:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 04:55:52,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2021-01-07 04:55:52,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:52,855 INFO L225 Difference]: With dead ends: 152 [2021-01-07 04:55:52,856 INFO L226 Difference]: Without dead ends: 152 [2021-01-07 04:55:52,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-07 04:55:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-01-07 04:55:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2021-01-07 04:55:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-07 04:55:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-01-07 04:55:52,866 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 74 [2021-01-07 04:55:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:52,866 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-01-07 04:55:52,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 04:55:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-01-07 04:55:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-07 04:55:52,868 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:52,868 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:52,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 04:55:52,869 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:52,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:52,869 INFO L82 PathProgramCache]: Analyzing trace with hash -522705552, now seen corresponding path program 1 times [2021-01-07 04:55:52,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:52,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109481196] [2021-01-07 04:55:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-01-07 04:55:53,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109481196] [2021-01-07 04:55:53,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463054595] [2021-01-07 04:55:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:53,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-07 04:55:53,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:53,379 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 04:55:53,380 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,382 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,382 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,382 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 04:55:53,416 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,418 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 04:55:53,423 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 04:55:53,429 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,434 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,435 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,435 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2021-01-07 04:55:53,466 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-01-07 04:55:53,467 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,475 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,476 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,476 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2021-01-07 04:55:53,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,515 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-01-07 04:55:53,518 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,529 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,530 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,534 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2021-01-07 04:55:53,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,593 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-01-07 04:55:53,595 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,608 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,610 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,610 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:27 [2021-01-07 04:55:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,639 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-01-07 04:55:53,640 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,653 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,654 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,655 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:27 [2021-01-07 04:55:53,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,681 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-01-07 04:55:53,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,696 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,697 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,697 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:27 [2021-01-07 04:55:53,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,728 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-01-07 04:55:53,730 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,744 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,745 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:23 [2021-01-07 04:55:53,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:53,902 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,902 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2021-01-07 04:55:53,904 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,910 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:53,911 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:53,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2021-01-07 04:55:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 04:55:53,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:53,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 19 [2021-01-07 04:55:53,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353416263] [2021-01-07 04:55:53,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-01-07 04:55:53,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:53,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-01-07 04:55:53,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-01-07 04:55:53,935 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 19 states. [2021-01-07 04:55:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:55,177 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2021-01-07 04:55:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-07 04:55:55,178 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2021-01-07 04:55:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:55,180 INFO L225 Difference]: With dead ends: 177 [2021-01-07 04:55:55,181 INFO L226 Difference]: Without dead ends: 177 [2021-01-07 04:55:55,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=871, Unknown=0, NotChecked=0, Total=1122 [2021-01-07 04:55:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-01-07 04:55:55,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 146. [2021-01-07 04:55:55,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-07 04:55:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2021-01-07 04:55:55,188 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 78 [2021-01-07 04:55:55,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:55,188 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2021-01-07 04:55:55,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-01-07 04:55:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2021-01-07 04:55:55,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-07 04:55:55,192 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:55,193 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:55,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-07 04:55:55,406 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:55,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1817927893, now seen corresponding path program 1 times [2021-01-07 04:55:55,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:55,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476985239] [2021-01-07 04:55:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 65 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-01-07 04:55:55,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476985239] [2021-01-07 04:55:55,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916823411] [2021-01-07 04:55:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:55,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-07 04:55:55,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:55,925 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-01-07 04:55:55,926 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:55,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:55,928 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:55,928 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-01-07 04:55:55,950 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:55,950 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 04:55:55,956 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 04:55:55,958 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:55,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:55,960 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:55,961 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2021-01-07 04:55:55,981 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 04:55:55,982 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:55,986 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:55,987 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:55,987 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2021-01-07 04:55:56,032 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-01-07 04:55:56,032 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 04:55:56,036 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,042 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:56,044 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2021-01-07 04:55:56,062 INFO L348 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-01-07 04:55:56,063 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-01-07 04:55:56,064 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,068 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:56,070 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,070 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:14 [2021-01-07 04:55:56,088 INFO L348 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-01-07 04:55:56,088 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-01-07 04:55:56,089 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,094 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:56,094 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,095 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:14 [2021-01-07 04:55:56,132 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-01-07 04:55:56,134 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,139 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:56,142 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,143 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:9 [2021-01-07 04:55:56,257 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-01-07 04:55:56,258 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:56,261 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:56,262 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2021-01-07 04:55:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 04:55:56,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:56,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 20 [2021-01-07 04:55:56,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097803556] [2021-01-07 04:55:56,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-01-07 04:55:56,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:56,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-01-07 04:55:56,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-01-07 04:55:56,288 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand 20 states. [2021-01-07 04:55:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:55:57,099 INFO L93 Difference]: Finished difference Result 177 states and 195 transitions. [2021-01-07 04:55:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-07 04:55:57,100 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 80 [2021-01-07 04:55:57,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:55:57,104 INFO L225 Difference]: With dead ends: 177 [2021-01-07 04:55:57,104 INFO L226 Difference]: Without dead ends: 177 [2021-01-07 04:55:57,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-01-07 04:55:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-01-07 04:55:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 146. [2021-01-07 04:55:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-07 04:55:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2021-01-07 04:55:57,115 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 80 [2021-01-07 04:55:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:55:57,115 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2021-01-07 04:55:57,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-01-07 04:55:57,115 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2021-01-07 04:55:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-07 04:55:57,116 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:55:57,116 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:55:57,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 04:55:57,332 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:55:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:55:57,333 INFO L82 PathProgramCache]: Analyzing trace with hash 182605743, now seen corresponding path program 1 times [2021-01-07 04:55:57,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:55:57,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053148241] [2021-01-07 04:55:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:55:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-01-07 04:55:57,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053148241] [2021-01-07 04:55:57,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11666977] [2021-01-07 04:55:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 04:55:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 04:55:57,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-07 04:55:57,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 04:55:57,810 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:57,810 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-01-07 04:55:57,813 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 04:55:57,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-07 04:55:57,819 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:57,824 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:57,825 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:57,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:12 [2021-01-07 04:55:57,909 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-01-07 04:55:57,910 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:57,920 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:57,921 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:57,922 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2021-01-07 04:55:57,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:57,978 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-01-07 04:55:57,979 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:57,990 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:57,991 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-01-07 04:55:57,991 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2021-01-07 04:55:58,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:58,099 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:58,099 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 110 [2021-01-07 04:55:58,105 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2021-01-07 04:55:58,105 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-07 04:55:58,107 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 04:55:58,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:58,122 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-01-07 04:55:58,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:51 [2021-01-07 04:55:58,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:58,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-01-07 04:55:58,427 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 04:55:58,428 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 81 [2021-01-07 04:55:58,437 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2021-01-07 04:55:58,439 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 04:55:58,440 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2021-01-07 04:55:58,451 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-01-07 04:55:58,505 INFO L625 ElimStorePlain]: treesize reduction 15, result has 61.5 percent of original size [2021-01-07 04:55:58,510 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-07 04:55:58,522 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-01-07 04:55:58,523 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:63, output treesize:16 [2021-01-07 04:55:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-01-07 04:55:58,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 04:55:58,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2021-01-07 04:55:58,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084398846] [2021-01-07 04:55:58,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-01-07 04:55:58,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 04:55:58,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-01-07 04:55:58,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-01-07 04:55:58,614 INFO L87 Difference]: Start difference. First operand 146 states and 165 transitions. Second operand 25 states. [2021-01-07 04:56:01,007 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-01-07 04:56:01,217 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2021-01-07 04:56:01,453 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2021-01-07 04:56:01,675 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-01-07 04:56:02,048 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-01-07 04:56:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 04:56:02,392 INFO L93 Difference]: Finished difference Result 164 states and 178 transitions. [2021-01-07 04:56:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-07 04:56:02,393 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 81 [2021-01-07 04:56:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 04:56:02,394 INFO L225 Difference]: With dead ends: 164 [2021-01-07 04:56:02,394 INFO L226 Difference]: Without dead ends: 160 [2021-01-07 04:56:02,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=346, Invalid=1460, Unknown=0, NotChecked=0, Total=1806 [2021-01-07 04:56:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-01-07 04:56:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 132. [2021-01-07 04:56:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-07 04:56:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 147 transitions. [2021-01-07 04:56:02,407 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 147 transitions. Word has length 81 [2021-01-07 04:56:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 04:56:02,407 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 147 transitions. [2021-01-07 04:56:02,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-01-07 04:56:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 147 transitions. [2021-01-07 04:56:02,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-07 04:56:02,410 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 04:56:02,410 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 04:56:02,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-07 04:56:02,612 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2021-01-07 04:56:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 04:56:02,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1021407014, now seen corresponding path program 1 times [2021-01-07 04:56:02,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 04:56:02,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239682621] [2021-01-07 04:56:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 04:56:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 04:56:02,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 04:56:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 04:56:02,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 04:56:02,816 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-07 04:56:02,816 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-07 04:56:02,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-07 04:56:02,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 04:56:02 BoogieIcfgContainer [2021-01-07 04:56:02,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 04:56:02,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 04:56:02,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 04:56:02,903 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 04:56:02,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 04:55:46" (3/4) ... [2021-01-07 04:56:02,905 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-07 04:56:03,012 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-ext3-properties/dll_nullified-1.i-witness.graphml [2021-01-07 04:56:03,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 04:56:03,013 INFO L168 Benchmark]: Toolchain (without parser) took 18498.64 ms. Allocated memory was 153.1 MB in the beginning and 320.9 MB in the end (delta: 167.8 MB). Free memory was 126.7 MB in the beginning and 245.7 MB in the end (delta: -119.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 8.0 GB. [2021-01-07 04:56:03,013 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 04:56:03,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.70 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 104.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-07 04:56:03,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.19 ms. Allocated memory is still 153.1 MB. Free memory was 104.1 MB in the beginning and 102.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 04:56:03,018 INFO L168 Benchmark]: Boogie Preprocessor took 78.78 ms. Allocated memory is still 153.1 MB. Free memory was 102.2 MB in the beginning and 100.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 04:56:03,019 INFO L168 Benchmark]: RCFGBuilder took 880.43 ms. Allocated memory is still 153.1 MB. Free memory was 100.5 MB in the beginning and 106.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 04:56:03,019 INFO L168 Benchmark]: TraceAbstraction took 16673.87 ms. Allocated memory was 153.1 MB in the beginning and 320.9 MB in the end (delta: 167.8 MB). Free memory was 106.4 MB in the beginning and 252.0 MB in the end (delta: -145.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 8.0 GB. [2021-01-07 04:56:03,020 INFO L168 Benchmark]: Witness Printer took 109.61 ms. Allocated memory is still 320.9 MB. Free memory was 252.0 MB in the beginning and 245.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-01-07 04:56:03,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 634.70 ms. Allocated memory is still 153.1 MB. Free memory was 126.5 MB in the beginning and 104.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 112.19 ms. Allocated memory is still 153.1 MB. Free memory was 104.1 MB in the beginning and 102.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.78 ms. Allocated memory is still 153.1 MB. Free memory was 102.2 MB in the beginning and 100.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 880.43 ms. Allocated memory is still 153.1 MB. Free memory was 100.5 MB in the beginning and 106.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16673.87 ms. Allocated memory was 153.1 MB in the beginning and 320.9 MB in the end (delta: 167.8 MB). Free memory was 106.4 MB in the beginning and 252.0 MB in the end (delta: -145.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 8.0 GB. * Witness Printer took 109.61 ms. Allocated memory is still 320.9 MB. Free memory was 252.0 MB in the beginning and 245.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 616]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L599] const int len = 5; [L579] DLL head = ((void *)0); [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND FALSE !(\read(head)) [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND FALSE !(len > 0) [L596] return head; [L600] DLL head = dll_create(len); [L601] head->next [L601] COND TRUE head->next [L602] EXPR head->data_0 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] EXPR head->data_1 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] EXPR head->data_2 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 35 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.5s, OverallIterations: 17, TraceHistogramMax: 5, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1123 SDtfs, 4858 SDslu, 2742 SDs, 0 SdLazy, 2225 SolverSat, 261 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 622 GetRequests, 441 SyntacticMatches, 15 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=11, 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, 16 MinimizatonAttempts, 375 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1206 NumberOfCodeBlocks, 1206 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1099 ConstructedInterpolants, 5 QuantifiedInterpolants, 288258 SizeOfPredicates, 66 NumberOfNonLiveVariables, 2443 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 1084/1491 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...